Computer Science 1033A/B Lecture Notes - Lecture 2: Microsoft Powerpoint, Corel, Human Eye

• School: Western University
• Department: Computer Science
• Course: Computer Science 1033A/B
• Professor: Vivi Tryphonopolous

Document Summary

Origin: we rely on images for information, explanations, and entertainment, non digital medium - paper copy of a photo o. Scanner saves the image on a file on computer: outside world- photography. Digital images uploaded to a file on your computer o o: create image- clip art images/scenes. It only understand/speak binary (digits 0 and 1: everything gets transferred into binary. Digitization: process of translating a piece of into binary bits (binary digit, bit is the fundamental unit of information in a computer system, computers built from electronic devices that have only two states: on (high) and. Off (low: electrical signals turn into bits, conversion from analog to digital. Hexadecimal- 16 digits: measurement for each bit is based on binary system (base 2) 2 to the power of bit #= number of combination o. Rule: more bits, more colours available to assign to a pixel.