Working With Images, Sound, and Video Mark Grabe

Copyright © Houghton Mifflin Company. All rights reserved.8-2 Tools For Creating and Manipulating Images n Technology offers opportunities to: u Capture images u Create images F Manipulate images originating from either method

Copyright © Houghton Mifflin Company. All rights reserved.8-3 Paint and Draw Programs n Paint - represent images as individual dots n Draw - represent images mathematically n Paint program of most general value for curriculum projects

Copyright © Houghton Mifflin Company. All rights reserved.8-4 Paint Versus Draw Programs n Paint - bit-mapped representation - paint dots on background u Easier to use parts u Images from other devices (cameras, scanner) in this format n Draw - object oriented u Easier to manipulate size of entire image - most obvious when enlarging

Copyright © Houghton Mifflin Company. All rights reserved.8-5 Applications of Graphic Programs n Create graphic n Modify graphics u Perhaps generated by other means - e.g., digital camera n Save for use in other programs - e.g., word processing

Copyright © Houghton Mifflin Company. All rights reserved.8-6 File Formats n Programs can save or open multiple formats n Native format of program vs. cross application formats n Common bit-mapped formats u BMP, PICT, JPG n Web formats u JPG, GIF

Copyright © Houghton Mifflin Company. All rights reserved.8-7 Capturing Images n Scanner n Video Digitizer n Digital Camera

Copyright © Houghton Mifflin Company. All rights reserved.8-8 Scanner n Lens and mirror focus reflected light on CCD n Charge coupled device - converts input to digital data

Copyright © Houghton Mifflin Company. All rights reserved.8-9 Video Digitizer n Board or device to convert analog data to digital data n Input from older camcorders or other analog video/audio source

Copyright © Houghton Mifflin Company. All rights reserved.8-10 Digital Camera n Capture images in digital form n CCD built into camera n Pixel density of camera influence image quality u Identified as number of megapixels (2,3,5 etc.) n Consider storage options - built-in RAM, removable flash sticks, CD

Copyright © Houghton Mifflin Company. All rights reserved.8-11 Sources For Digital Images n Coloring books - scan for line art n Online images u Consider copyright - some free images offered n Scan student art n Purchase clipart collections

Copyright © Houghton Mifflin Company. All rights reserved.8-12 Working With Video n Equipment/Resources u Digital camcorder (if new purchase) u Accessories - tripod, remote microphone u Computer and software for editing u External storage F Tape, CD, DVD

Copyright © Houghton Mifflin Company. All rights reserved.8-13 Video Production n Generation of a polished video product u Planning - establish goals u Collect primary sources F Video F Images F Script u Edit

Copyright © Houghton Mifflin Company. All rights reserved.8-14 Video Editing n Transfer video from tape to computer n Select desired components from clips stored on computer n Order clips n Add other media n Create transitions n Save in desired format

Copyright © Houghton Mifflin Company. All rights reserved.8-15 Learning With Audio and Image Tools n External tasks encourage productive cognitive behaviors n Do students have opportunity to manipulate content they experience in visual or audio format? u e.g., Visual information in biology