kangwon national university curriculum contents...curriculum – solid modeling basic (ch1) •...

Kangwon National University

Prof. B. H. Kim

Curriculum Contents

Subject: Advanced Solid Modelling Prof.: Byeong Hee Kim Evaluation

– Fin exam 35% Mid-term 35% Quiz 20% Atten. 10% • Grading: 70% A~B, 30% C~F

Curriculum– Solid modeling basic (Ch1)

• Follow the Textbook – Review (2weeks/6hrs)– Advanced 2-D engineering drawing (Ch 2)

• Geometric Dimensioning & Tolerancing (3weeks/9hrs)• Mock evaluation (1week/3hrs)

– Advanced Solid modeling (Ch 3)• Configuration Manager (1week/3hrs)• Animation & etc (1weeks/3hrs)

– Mid. examination (27th Oct.)– CAE basic & Modeling (Ch 4)

• Static Analysis (2weeks/6hrs)• Flow simulation (1Weeks/3hrs)

– NC Programing Theory (Ch 5)• with GibbsCAM LAB. – Basic & NC code generation & Interfacing(2weeks/3hrs)

– Fin. examination (8th Dec.)> Text: handout (http://http://www.mnbs.kr)


Prof. B. H. Kim

솔리드모델 응용설계Ch 0 Computer Graphics in SW

Department ofMechatronics EngineeRing


Prof. B. H. Kim

Preview: Computer Graphic

• The term computer graphics; – Almost everything on computers that is not text or sound.– Representation and manipulation of image data by a computer– Various technologies used to create and manipulate images– Sub-field of computer science which studies methods for digitally

synthesizing and manipulating visual content.• Categorized by two dimensional (2D), three dimensional (3D),

and animated graphics.• Short history

CRT SAGE Sketch padENIAC


Prof. B. H. Kim


Prof. B. H. Kim


• The term computer graphics; – Almost everything on computers that is not text or sound.– Representation and manipulation of image data by a computer– Various technologies used to create and manipulate images– Sub-field of computer science which studies methods for digitally

synthesizing and manipulating visual content, see study ofcomputer graphics

• Categorized by two dimensional (2D), three dimensional (3D), and animated graphics.

• Short history

HMDPong video game

I. Sutherland CatmullAlan KayD. C. Evans

WarnockUniv. of Utah


Prof. B. H. Kim


• What has done by Edwin Catmull?– Texture mapping (1974)

UV mapping

Texture mapping


Prof. B. H. Kim


• What has done by Edwin Catmull?– Bi cubic patch

– Spatial Anti-aliasing

• Figure a shows visual distortion(anti-aliasing is not used) Near the top of the image, wherethe checkerboard is very small, the image is both difficult to recognize and not aestheticallyappealing.

• Figure b shows an anti-aliased version Checkerboard near the top blends into gray• Figure c shows another anti-aliasing algorithm based on the sinc filter, which is considered

better than the algorithm used in b.

Figure a Figure b Figure c


Prof. B. H. Kim


• 3D graphics became more popular in the 1990s in gaming,multimedia and animation


Prof. B. H. Kim


• Categorized by image type– Two-dimensional

• the computer-based generation of digital images—mostly frommodels, such as digital image.

• Pixel art: A large form of digital art being pixel art is created throughthe use of raster graphics software, where images are edited on thepixel level. Graphics in most old (or relatively limited) computer andvideo games, graphing calculator games, and many mobile phonegames are mostly pixel art.

• Vector graphics: the use of geometrical primitives such as points, lines,curves, and shapes or polygon(s), which are all based onmathematical expressions, to represent images.


Prof. B. H. Kim


• Categorized by image type– Two-dimensional

• Pixel art (bitmap) vs. Vector graphics


Prof. B. H. Kim


• Categorized by image type– Three-dimensional

• For the purpose of performance this is stored in the computer. thisincludes images that may be for later display or for real-time viewing.

• 3D computer graphics are the same as 3D models.

– Computer animation• Computer animation is the art of creating moving images via the use

of computers.• Sometimes the target of the animation is the computer itself, but

sometimes the target is another medium, such as film. It is also referredto as CGI (Computer-generated imagery or computer-generatedimaging), especially when used in films.


Prof. B. H. Kim


• Basic glossary & principles– Pixel: a single point in a raster image (bitmap)

• In typical uncompressed bitmaps, image pixels are generally storedwith a color depth of 1, 4, 8, 16, 24, 32, 48, or 64 bits per pixel. Pixels of8 bits and fewer can represent either grayscale or indexed color.

– Graphics: Visual presentations on a surface, such as a computerscreen. Examples are photographs, drawing, graphics designs,maps, engineering drawings, or other images.

• Graphics often combine text and illustration.– Rendering

• Generating a 3D model by means of computer programs.• It would contain geometry, viewpoint, texture, lighting, and shading

information as a description of the virtual scene.• 3D projection/Ray tracing/Shading/Texture mapping/Anti-aliasing

– Volume rendering• A technique used to display a 2D projection of a 3D discretely

sampled data set. A typical 3D data set is a group of 2D slice imagesacquired by a CT or MRI scanner.

– 3D modeling


Prof. B. H. Kim

• Rendering– The process(or image) of generating an image from a

model by means of computer programs.– A scene would contain geometry, viewpoint, texture,

lighting, and shading information as a description of thevirtual scene.



Prof. B. H. Kim

• Rendering– Ray tracing

• Tracing a path from an imaginary eye through each pixel in a virtualscreen, and calculating the color of the object visible through it.

• Scenes in ray tracing are described mathematically by a programmeror by a visual artist (typically using intermediary tools).



Prof. B. H. Kim

• Rendering– Shading/Transparency– Mapping: Texture, Bump


Bump mapping

Shading

Texture mapping

Transparency


Prof. B. H. Kim

• Volume Rendering– A typical 3D data set is a group of 2D slice images

acquired by a CT, MRI, or MicroCT scanner.


CT scanned forearm

kangwon national university curriculum contents...curriculum – solid modeling basic (ch1) •...

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