working with images, sound, and video mark grabe

Working With Images, Sound, and Video

Mark Grabe

Copyright © Houghton Mifflin Company. All rights reserved.

8-2

Tools For Creating and Manipulating Images

Technology offers opportunities to: Capture images Create images

Manipulate images originating from either method


8-3

Paint and Draw Programs Paint - represent images as

individual dots Draw - represent images

mathematically Paint program of most general

value for curriculum projects


8-4

Paint Versus Draw Programs Paint - bit-mapped representation -

paint dots on background Easier to use parts Images from other devices

(cameras, scanner) in this format Draw - object oriented

Easier to manipulate size of entire image - most obvious when enlarging


8-5

Applications of Graphic Programs Create graphic Modify graphics

Perhaps generated by other means - e.g., digital camera

Save for use in other programs - e.g., word processing


8-6

File Formats Programs can save or open

multiple formats Native format of program vs. cross

application formats Common bit-mapped formats

BMP, PICT, JPG Web formats

JPG, GIF


8-7

Capturing Images

Scanner Video Digitizer Digital Camera


8-8

Scanner

Lens and mirror focus reflected light on CCD

Charge coupled device - converts input to digital data


8-9

Video Digitizer

Board or device to convert analog data to digital data

Input from older camcorders or other analog video/audio source


8-10

Digital Camera

Capture images in digital form CCD built into camera Pixel density of camera influence

image quality Identified as number of megapixels

(2,3,5 etc.) Consider storage options - built-in

RAM, removable flash sticks, CD


8-11

Sources For Digital Images Coloring books - scan for line art Online images

Consider copyright - some free images offered

Scan student art Purchase clipart collections


8-12

Working With Video

Equipment/Resources Digital camcorder (if new

purchase) Accessories - tripod, remote

microphone Computer and software for editing External storage

Tape, CD, DVD


8-13

Video Production

Generation of a polished video product Planning - establish goals Collect primary sources

Video Images Script

Edit


8-14

Video Editing

Transfer video from tape to computer

Select desired components from clips stored on computer

Order clips Add other media Create transitions Save in desired format


8-15

Learning With Audio and Image Tools External tasks encourage

productive cognitive behaviors Do students have opportunity to

manipulate content they experience in visual or audio format? e.g., Visual information in biology

working with images, sound, and video mark grabe

Documents