dada and photomontage
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Montana Tech slides for web design class.TRANSCRIPT
Montana Tech
Dada and Photomontage
Human Pixel Preshowhttpwwwyoutubecomwatchv=V9Jo0BRdbO4
bull Number of pixels in image = (height x width) x resolution
Dada and Photomontage
bull In the 1920s The Berlin Dadaists - the monteurs (mechanics) - would use scissors and glue rather than paintbrushes and paints to express their views of modern life through images presented by the media A variation on the collage technique photomontage utilized actual or reproductions of real photographs printed in the press
Part 1
El Lissitzky The Constructor a self-portrait photomontage c1925
Dada a descriptionDada is the groundwork to abstract art and sound poetry a starting point for performance art a prelude to postmodernism an influence on pop art a celebration of antiart to be later embraced for anarcho-political uses in the 1960s and the movement that lay the foundation for Surrealism
-Marc LowenthalGeorge Grosz c1925
Fernand Leger 1881-1955
bull Leger juxtaposed natural forms and mechanical elements exemplifying what he called the ldquolaw of contrastrdquo
bull In 1924 in collaboration with George Antheil and Man Ray Leacuteger produced and directed the iconic and Futurism-influenced film Ballet Meacutecanique
bull YouTube link httpwwwyoutubecomwatchv=2QH2xGuftkE
2-D Raster Graphics
bull In computer graphics a raster graphic image or bitmap is a data structure representing a generally rectangular grid of pixels or points of color viewable via a monitor paper or other display medium
bull Raster graphics are resolution dependent They cannot scale to an arbitrary resolution without loss of apparent quality
bull More commonly we create 2-D graphics in Adobe Photoshop
Raster Graphics and Photoshop
Discreet Digital vs Continuous Analog
bull If colours in an image are discrete one can assign numbers to each colour element encoding the information in a digital format A simplified example of this is cross-stitch needlepoint
bull If colours are continuous there is always another colour between any two points of colour In analog method a continuous physical process translates changes in one medium into changes in another
Raster Graphics and Photoshop
Navajo Rug
Discreet Image
Photographcredit Yuri Dojc
Continuous Image
The Pixel
bull An image pixel is a point sample the value of a continuous thing at a single point (Alvy Smith creator of the ldquoPaintrdquo program)
bull A screen pixel is the smallest area that a particular combination of software and hardware can illuminate on a monitor
bull When a document is viewed at 100 scale each image pixel is represented by a screen pixel When viewed at gt 100 each image pixel is represented by several screen pixels
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Dada and Photomontage
bull In the 1920s The Berlin Dadaists - the monteurs (mechanics) - would use scissors and glue rather than paintbrushes and paints to express their views of modern life through images presented by the media A variation on the collage technique photomontage utilized actual or reproductions of real photographs printed in the press
Part 1
El Lissitzky The Constructor a self-portrait photomontage c1925
Dada a descriptionDada is the groundwork to abstract art and sound poetry a starting point for performance art a prelude to postmodernism an influence on pop art a celebration of antiart to be later embraced for anarcho-political uses in the 1960s and the movement that lay the foundation for Surrealism
-Marc LowenthalGeorge Grosz c1925
Fernand Leger 1881-1955
bull Leger juxtaposed natural forms and mechanical elements exemplifying what he called the ldquolaw of contrastrdquo
bull In 1924 in collaboration with George Antheil and Man Ray Leacuteger produced and directed the iconic and Futurism-influenced film Ballet Meacutecanique
bull YouTube link httpwwwyoutubecomwatchv=2QH2xGuftkE
2-D Raster Graphics
bull In computer graphics a raster graphic image or bitmap is a data structure representing a generally rectangular grid of pixels or points of color viewable via a monitor paper or other display medium
bull Raster graphics are resolution dependent They cannot scale to an arbitrary resolution without loss of apparent quality
bull More commonly we create 2-D graphics in Adobe Photoshop
Raster Graphics and Photoshop
Discreet Digital vs Continuous Analog
bull If colours in an image are discrete one can assign numbers to each colour element encoding the information in a digital format A simplified example of this is cross-stitch needlepoint
bull If colours are continuous there is always another colour between any two points of colour In analog method a continuous physical process translates changes in one medium into changes in another
Raster Graphics and Photoshop
Navajo Rug
Discreet Image
Photographcredit Yuri Dojc
Continuous Image
The Pixel
bull An image pixel is a point sample the value of a continuous thing at a single point (Alvy Smith creator of the ldquoPaintrdquo program)
bull A screen pixel is the smallest area that a particular combination of software and hardware can illuminate on a monitor
bull When a document is viewed at 100 scale each image pixel is represented by a screen pixel When viewed at gt 100 each image pixel is represented by several screen pixels
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Dada a descriptionDada is the groundwork to abstract art and sound poetry a starting point for performance art a prelude to postmodernism an influence on pop art a celebration of antiart to be later embraced for anarcho-political uses in the 1960s and the movement that lay the foundation for Surrealism
-Marc LowenthalGeorge Grosz c1925
Fernand Leger 1881-1955
bull Leger juxtaposed natural forms and mechanical elements exemplifying what he called the ldquolaw of contrastrdquo
bull In 1924 in collaboration with George Antheil and Man Ray Leacuteger produced and directed the iconic and Futurism-influenced film Ballet Meacutecanique
bull YouTube link httpwwwyoutubecomwatchv=2QH2xGuftkE
2-D Raster Graphics
bull In computer graphics a raster graphic image or bitmap is a data structure representing a generally rectangular grid of pixels or points of color viewable via a monitor paper or other display medium
bull Raster graphics are resolution dependent They cannot scale to an arbitrary resolution without loss of apparent quality
bull More commonly we create 2-D graphics in Adobe Photoshop
Raster Graphics and Photoshop
Discreet Digital vs Continuous Analog
bull If colours in an image are discrete one can assign numbers to each colour element encoding the information in a digital format A simplified example of this is cross-stitch needlepoint
bull If colours are continuous there is always another colour between any two points of colour In analog method a continuous physical process translates changes in one medium into changes in another
Raster Graphics and Photoshop
Navajo Rug
Discreet Image
Photographcredit Yuri Dojc
Continuous Image
The Pixel
bull An image pixel is a point sample the value of a continuous thing at a single point (Alvy Smith creator of the ldquoPaintrdquo program)
bull A screen pixel is the smallest area that a particular combination of software and hardware can illuminate on a monitor
bull When a document is viewed at 100 scale each image pixel is represented by a screen pixel When viewed at gt 100 each image pixel is represented by several screen pixels
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Fernand Leger 1881-1955
bull Leger juxtaposed natural forms and mechanical elements exemplifying what he called the ldquolaw of contrastrdquo
bull In 1924 in collaboration with George Antheil and Man Ray Leacuteger produced and directed the iconic and Futurism-influenced film Ballet Meacutecanique
bull YouTube link httpwwwyoutubecomwatchv=2QH2xGuftkE
2-D Raster Graphics
bull In computer graphics a raster graphic image or bitmap is a data structure representing a generally rectangular grid of pixels or points of color viewable via a monitor paper or other display medium
bull Raster graphics are resolution dependent They cannot scale to an arbitrary resolution without loss of apparent quality
bull More commonly we create 2-D graphics in Adobe Photoshop
Raster Graphics and Photoshop
Discreet Digital vs Continuous Analog
bull If colours in an image are discrete one can assign numbers to each colour element encoding the information in a digital format A simplified example of this is cross-stitch needlepoint
bull If colours are continuous there is always another colour between any two points of colour In analog method a continuous physical process translates changes in one medium into changes in another
Raster Graphics and Photoshop
Navajo Rug
Discreet Image
Photographcredit Yuri Dojc
Continuous Image
The Pixel
bull An image pixel is a point sample the value of a continuous thing at a single point (Alvy Smith creator of the ldquoPaintrdquo program)
bull A screen pixel is the smallest area that a particular combination of software and hardware can illuminate on a monitor
bull When a document is viewed at 100 scale each image pixel is represented by a screen pixel When viewed at gt 100 each image pixel is represented by several screen pixels
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
2-D Raster Graphics
bull In computer graphics a raster graphic image or bitmap is a data structure representing a generally rectangular grid of pixels or points of color viewable via a monitor paper or other display medium
bull Raster graphics are resolution dependent They cannot scale to an arbitrary resolution without loss of apparent quality
bull More commonly we create 2-D graphics in Adobe Photoshop
Raster Graphics and Photoshop
Discreet Digital vs Continuous Analog
bull If colours in an image are discrete one can assign numbers to each colour element encoding the information in a digital format A simplified example of this is cross-stitch needlepoint
bull If colours are continuous there is always another colour between any two points of colour In analog method a continuous physical process translates changes in one medium into changes in another
Raster Graphics and Photoshop
Navajo Rug
Discreet Image
Photographcredit Yuri Dojc
Continuous Image
The Pixel
bull An image pixel is a point sample the value of a continuous thing at a single point (Alvy Smith creator of the ldquoPaintrdquo program)
bull A screen pixel is the smallest area that a particular combination of software and hardware can illuminate on a monitor
bull When a document is viewed at 100 scale each image pixel is represented by a screen pixel When viewed at gt 100 each image pixel is represented by several screen pixels
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Discreet Digital vs Continuous Analog
bull If colours in an image are discrete one can assign numbers to each colour element encoding the information in a digital format A simplified example of this is cross-stitch needlepoint
bull If colours are continuous there is always another colour between any two points of colour In analog method a continuous physical process translates changes in one medium into changes in another
Raster Graphics and Photoshop
Navajo Rug
Discreet Image
Photographcredit Yuri Dojc
Continuous Image
The Pixel
bull An image pixel is a point sample the value of a continuous thing at a single point (Alvy Smith creator of the ldquoPaintrdquo program)
bull A screen pixel is the smallest area that a particular combination of software and hardware can illuminate on a monitor
bull When a document is viewed at 100 scale each image pixel is represented by a screen pixel When viewed at gt 100 each image pixel is represented by several screen pixels
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Navajo Rug
Discreet Image
Photographcredit Yuri Dojc
Continuous Image
The Pixel
bull An image pixel is a point sample the value of a continuous thing at a single point (Alvy Smith creator of the ldquoPaintrdquo program)
bull A screen pixel is the smallest area that a particular combination of software and hardware can illuminate on a monitor
bull When a document is viewed at 100 scale each image pixel is represented by a screen pixel When viewed at gt 100 each image pixel is represented by several screen pixels
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
The Pixel
bull An image pixel is a point sample the value of a continuous thing at a single point (Alvy Smith creator of the ldquoPaintrdquo program)
bull A screen pixel is the smallest area that a particular combination of software and hardware can illuminate on a monitor
bull When a document is viewed at 100 scale each image pixel is represented by a screen pixel When viewed at gt 100 each image pixel is represented by several screen pixels
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Local-Touch Mark Making
bull Touch is the artistrsquos experience of making a mark in the process of creation
bull Local-touch mark making is controlled by hand accumulating over time of small marks to make large image Compares to traditional charcoal etc
bull The artist observes and records and makes new marks based on the appearance of all the marks accumulated up to that time EG Pumpkin
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Global-Touch Mark Making
bull Global-Touch tools change an entire image area simultaneously for eg scaling rotating replacing one colour with another
bull Global process or ldquoalgorithmicrdquo processes are common on the computer but rare in traditional art work
bull The hand plays almost no role and changes made to the image affect the whole piece or a predetermined area
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Local-Global Continuumbull Cloning tools use as a source a reference point on
one image and copy pixels to another area in the same or a different image
Composition
bull Composition of a piece is its structure (plus aesthetics) the overall arrangement of form and colour This space may be representational or abstract illustionistic or iconographic whatever the logic or artistic inspiration there are strategies for structure (and aesthetics)
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Image Size File Size Resolution
bull The size of a raster graphic image is its file size or the amount of information needed to describe the image
bull File size can also be thought of as the amount of disk space necessary to store the file (not taking compression into consideration
bull File size is determined by the imagersquos dimensions (height and width) resolution (number of pixels per inch) and colour depth (number of colour choices per pixel)
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Image Size File Size Resolution
bull Number of pixels in image = (height x width) x resolution
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Colour Depth
bull The minimum number of choices for colouring an image is two This is a 1-bit image or bitmap
bull 2-bits can describe four different colours
bull 3-bits can describe 8 difference colurs
bull 8- bits can describe 256 different colours that is2x2x2x2x2x2x2x2
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
Scale
bull Scaling is often referred to as resampling because the number of samples (pixels) change
bull When an image is scaled it deteriorates somewhat New pixels based on guesswork are introduced when the user sales up and some info is always discarded when scaling down
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
The Alpha or Transparency Channel
bull Transparency (also referred to as opacity) is a powerful tool for creating space in 2D art
bull Samples associated with a single pixel are stored in channels which can be manipulated separately
bull RGB has red green blue channels CMYK has cyan magenta yellow black channels
bull Alpha channels calculate transparency for the fraction of colour that will show through on the final image
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency
AlphaTransparency Continued
bull Ways of introducing alpha channels include masking eraser tool feathering graduated fills
bull Grey values in an alpha channel represent partial transparency (opacity)
bull Alpha channels are vital in compositing or the merging of images with varying levels of transparency