Computer Science 1033A/B Lecture Notes - Lecture 3: Clip Art, Octal

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

Document Summary

Laura"s powerpoint (cid:885: we reply on images for: information, explanations, entertainment. Originate: scanner saves the images in a file on your computer, non-digital medium (paper copy of a photo, outside world photography, create image clip art images/scenes, digital images uploaded to a file on your computer. Convert words, images, sounds movie -> your data -> computer data. What is digitalization: the process of translating a piece of information into binary bits (binary, bit is the fundamental unit of information in a computer system, why, computers are built from electronic devices that have only two possible. If we have 3 bits -: max of 8 values, could represent, days of the week, 8 shades of grey. How are images coded: every image is broken down into pixels. If a pixel colour is represented by 1 bit: value 1 = white, so we say, 1 bit allows for 2 colours, value 0 black, another way to specify (cid:498)(cid:884)(cid:499) is (cid:523)(cid:884)^(cid:883) -> 2)