Computer Science 1033A/B Lecture Notes - Lecture 4: Joint Photographic Experts Group, .Dwg, Gif

• School: Western University
• Department: Computer Science
• Course: Computer Science 1033A/B
• Professor: Laura Reid

Document Summary

Image bit depth (aka color depth): maximum number of colors used to represent an image: the more bits used the more color info stored to describe the color of a pixel, quality improves and larger file size. File formats: universally supported files: universally supported by graphics industry ! Jpg, gif: when an image is being sent to another application, convert to jpg or gif. File formats - choose . jpg or . gif. Color resolution - max # of colours used (24 bits,16 bits, 8 bits) To reduce file size, the file formats appropriate for the web are: . gif, . jpg, . png. Cross platform thus good for clipart but not good for photos. Allows for animation, works in all browsers, universal format, lacks sound! Good for photos computer games, screenshots, stills from a movie, etc. Not for well-defined lines or sharp contrasts between colours. Supports a max of 8-bit color scheme (8 bits/pixel = 256 colours) - good for clip art, not photos.