- Image function
- I(x,y): A discrete function from R2 → R
- grayscale value becomes the height
- x,y forms the image plane
- Landscape
- smoothen the Image function to form a landscape
- a smooth continuous image function representation is called a landscape
- Array of pixels
- Image histogram
- sort pixels by grayscale value and create a histogram
- image is lost (specifically, the spatial information is lost)
Spatial Resolution
- level of detail/number of pixels
- commonly what is meant by image resolution
- depends on the scale required
Grey level resolution
- change in the shades/levels of grey
- word length of the grey level
- number of bits per pixel
- 8bit → 256 shades of grey possible