Threshold and Compare Operations

Intel® IPPimplements image processing functions that operate on a pixel-by-pixel basis: threshold and compare functions. Table Image Threshold and Compare Operations lists all functions of this group:

Image Threshold and Compare Operations
Function Base Name	Operation
Thresholding
Threshold	Performs thresholding of pixel values in an image, using the specified compare operation
Threshold_GT	Thresholds pixel values of an image, using the comparison for “greater than”
Threshold_LT	Thresholds pixel values of an image, using the comparison for “less than”
Threshold_Val	Thresholds pixel values of an image. Pixels that satisfy the compare condition are set to a specified value
Threshold_GTVal	Thresholds pixel values of an image. Pixels that are greater than threshold are set to a specified value
Threshold_LTVal	Thresholds pixel values of an image. Pixels that are less than threshold are set to a specified value
Threshold_LTValGTVal	Performs double thresholding of pixel values in an image
Threshold_ComputeThreshold_Otsu	Computes the value of the Otsu threshold
Comparison
Compare	Compares pixel values of two images using a specified compare operation
CompareC	Compares pixel values of a source image to a given value using a specified compare operation
CompareEqualEps	Compares two images with floating-point data, testing whether pixel values are equal within a certain tolerance eps
CompareEqualEpsC	Tests whether floating-point pixel values of an image are equal to a given value within a certain tolerance eps