www.emgu.com/wiki
Returns the calculated norm. The multiple-channel array are treated as single-channel, that is, the results for all channels are combined.

Declaration Syntax

Parameters
- arr1 (IntPtr)
- The first source image
- arr2 (IntPtr)
- The second source image. If it is NULL, the absolute norm of arr1 is calculated, otherwise absolute or relative norm of arr1-arr2 is calculated
- normType (NORM_TYPE)
- Type of norm
- mask (IntPtr)
- The optional operation mask

Return Value
The calculated norm
Assembly:
Emgu.CV (Module: Emgu.CV) Version: 1.3.0.0 (1.3.0.0)