Image filtering

The center of the kernel for these operators is assumed to be the origin (0,0). So a 7 by 7 filter would be a 2d array with an index range from -3 to 3 in both dimensions.

Normal classes:

ConvolveSeparable2dC	Separable 2D Convolution
Convolve2dC	2D Convolution
ConvolveHorz2dC	Horzontal 2D Convolution with a 1D filter.
ConvolveVert2dC	Vertontal 2D Convolution with a 1D filter.
HomomorphicFilterC	Homomorphic filter
HistogramEqualiseC	Histogram Equalisation.
Correlate2dC	2D Convolution

Normal functions:

MatchSumAbsDifference(const Array2dC &,const Array2dC &,const Index2dC &,SumT &)	Compute the sum of absolute differences between two images.
SearchMinAbsDifference(const Array2dC &,const Array2dC &,const IndexRange2dC &,Index2dC &,SumT &)	Search img for template 'tmpl' with the minimum absolute difference.