Image Norms
The functions described in this section compute the following
norms of the image pixel values:
- Infinity norm (the largest absolute pixel value)
- L1 norm (the sum of absolute pixel values)
- L2 norm (the square root of the sum of squared pixel values).
Functions of this group also help you compute the norm of
differences in pixel values of two input images as well as the relative
error for two input images.