LLCU 212 Lecture Notes - Lecture 23: Scalable Vector Graphics, Grayscale, Tiff

• School: McGill University
• Department: Languages, Literatures, Cultures
• Course: LLCU 212
• Professor: Cecily Raynor

Document Summary

Digitization is converting analogue signal to digital. Quantization (how much information is measured each time there is a sample) For a photograph, want 16 million different colors. Digital cameras: screen: (cid:889)(cid:884)/9(cid:888)/(cid:884)(cid:882)(cid:882)/ dpi, printer: (cid:883)(cid:887)(cid:882)/(cid:885)(cid:882)(cid:882)/(cid:888)(cid:882)(cid:882)/ dpi, 2 megapixels: 1600x1200 (1,920,000) low resolution display, 3. 2 megapixels: 2048x1536 (3,145,728) moderate resolution display, 18 megapixels: 5184x3456 (17,915,904) extremely high resolution display. 1bit (2 colors: black and white): text. Every location in the image has a value, or no value (which is considered a type of value) Perceived smoothness can be achieved by using grayscale pixels on edges. No resolution involved (so changing scales does not compromise the quality of the image) Matrix of pixels (rectangular or box-shape of pixels. Bmp (basic multiple plane or bitmap): developed my microsoft windows. A way to code and share images more accurately. Compressing data, but loses some quality aspects. Easier to modify an image in raw format. Way of describing shapes (small file sizes)