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

• 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. Human eye can detect about 10 million colors, therefore, storing more than 10 million colours is pointless, so we only use 24 bit color (16 million colours) File formats: universally supported files: universally supported by graphics industry . When an image is being sent to another application, convert to jpg or. Gif: proprietary files (native files): default files used by specific software application, can be bitmap or vector formats psd, dwg, pic can save in native format or universal format. Psd: adobe photoshop, aup: audacity, mvmm: moviemaker. Not meant to be transferred to other applications. Software-specific image properties can only be retained when an image is saved in the software"s native format (layering in photoshop: cdr: coreldraw vector, dwg: autocad vector.