Images.md (586B)
1 +++ 2 title = 'Images' 3 +++ 4 # Images 5 ## Image conversion 6 Image (spatial) sampling 7 8 - sampling is done in both space and colour 9 - brightness is sampled at points and stored in matrix of numbers 10 - each element is a pixel 11 - spacial resolution — size in pixels in each direction (e.g. 1920 x 1080, 1280 x 720) 12 13 Colour quantisation 14 15 - each pixel has a digital value represented in bits 16 - that’s analog brightness 17 - with 1 bit, not much is done — binary image 18 - with 8 bits, greyscale (0-255 per pixel, with white at 255) 19 - with 24 bits, colour (0-255, 0-255, 0-255 per each pixel in RGB)