BUILT-IN MATHEMATICA SYMBOL

ImageCorrelate

ImageCorrelate[image, ker]
gives the correlation of image with kernel ker.

ImageCorrelate[image, ker, f]
computes a generalized correlation in which the function f is used in place of Dot.

Details and Options Details and Options

The correlation kernel is given as a two-dimensional numerical matrix.
ImageCorrelate[image, ker] by default gives an image of the same dimensions as image.
The kernel ker can be another image.
The correlation kernel must have either one channel or the same number of channels as the image.
ImageCorrelate takes a Padding option. The default setting is Padding->"Fixed".
With a setting Padding->None, ImageCorrelate[image, ker] normally gives an image smaller than image.
ImageCorrelate operates separately on each channel in an image.
ImageCorrelate gives an image of type .
In ImageCorrelate[image, ker, f], typical settings for the correlation operator f include:

	Dot	standard correlation
	ManhattanDistance	Manhattan or "city block" distance
	EuclideanDistance	Euclidean distance
	SquaredEuclideanDistance	squared Euclidean distance
	NormalizedSquaredEuclideanDistance	normalized squared Euclidean distance
	CosineDistance	angular cosine distance
	CorrelationDistance	correlation coefficient distance

ImageCorrelate takes a PerformanceGoal option to specify what aspect of performance to try to optimize. The default setting is PerformanceGoal->"Speed".