- camera sensors produce discrete outputs
- image types:
- binary
- black and white
- only binary bits to represent each pixel
- grayscale
- allowed more bits to preserve granularity of color
- 8 bit colors
- (0-255)
- color
- (0-255 * 3)
- every pixel needs 3D vector to represent (R,G,B)
- Sampling errors..
- sampling: sample a location of the image
- quantization: only using 256 discrete numbers to represent values
- Resolution - DPI, sampling parameter
- measure of spatial pixel density
- Image histogram - simple, cheap representation of images
- Color images are stored as
m x n x 3 matrix