gen_cooc_matrixgen_cooc_matrixGenCoocMatrixGenCoocMatrixgen_cooc_matrix (Operator)

Name

gen_cooc_matrixgen_cooc_matrixGenCoocMatrixGenCoocMatrixgen_cooc_matrix — Calculate the co-occurrence matrix of a region in an image.

Signature

Description

The operator gen_cooc_matrixgen_cooc_matrixGenCoocMatrixGenCoocMatrixGenCoocMatrixgen_cooc_matrix determines from the input regions how often the gray values i and j are located next to each other in a certain direction (0, 45, 90, 135 degrees), stores this number in the co-occurrence matrix at the locations (i,j) and (j,i) (the matrix is symmetrical), and finally scales the matrix with the number of entries. LdGrayLdGrayLdGrayLdGrayldGrayld_gray indicates the number of gray values to be distinguished (namely ).

Example: Input image with gray values (scaled with LdGrayLdGrayLdGrayLdGrayldGrayld_gray=2)

Co-occurrence matrix (not scaled):

Attention

Note that the operator gen_cooc_matrixgen_cooc_matrixGenCoocMatrixGenCoocMatrixGenCoocMatrixgen_cooc_matrix only considers the given RegionsRegionsRegionsRegionsregionsregions and ignores any previously set domain of the input image ImageImageImageImageimageimage.

Execution Information

• Multithreading type: reentrant (runs in parallel with non-exclusive operators).
• Multithreading scope: global (may be called from any thread).
• Automatically parallelized on tuple level.

Parameters

Result

The operator gen_cooc_matrixgen_cooc_matrixGenCoocMatrixGenCoocMatrixGenCoocMatrixgen_cooc_matrix returns the value 2 (H_MSG_TRUE) if an image with defined gray values is entered and the parameters are correct. The behavior in case of empty input (no input images available) is set via the operator set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>), the behavior in case of empty region is set via set_system(::'empty_region_result',<Result>:)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)set_system("empty_region_result",<Result>). If necessary an exception is raised.

Possible Predecessors

draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region, gen_circlegen_circleGenCircleGenCircleGenCirclegen_circle, gen_ellipsegen_ellipseGenEllipseGenEllipseGenEllipsegen_ellipse, gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1gen_rectangle1, gen_rectangle2gen_rectangle2GenRectangle2GenRectangle2GenRectangle2gen_rectangle2, thresholdthresholdThresholdThresholdThresholdthreshold, erosion_circleerosion_circleErosionCircleErosionCircleErosionCircleerosion_circle, binomial_filterbinomial_filterBinomialFilterBinomialFilterBinomialFilterbinomial_filter, gauss_filtergauss_filterGaussFilterGaussFilterGaussFiltergauss_filter, smooth_imagesmooth_imageSmoothImageSmoothImageSmoothImagesmooth_image, sub_imagesub_imageSubImageSubImageSubImagesub_image

Alternatives

cooc_feature_imagecooc_feature_imageCoocFeatureImageCoocFeatureImageCoocFeatureImagecooc_feature_image

See also

cooc_feature_matrixcooc_feature_matrixCoocFeatureMatrixCoocFeatureMatrixCoocFeatureMatrixcooc_feature_matrix

Module

Foundation