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gen_cooc_matrixgen_cooc_matrixGenCoocMatrixgen_cooc_matrixGenCoocMatrixGenCoocMatrix (Operator)

Name

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

Signature

gen_cooc_matrix(Regions, Image : Matrix : LdGray, Direction : )

Herror gen_cooc_matrix(const Hobject Regions, const Hobject Image, Hobject* Matrix, const Hlong LdGray, const Hlong Direction)

Herror T_gen_cooc_matrix(const Hobject Regions, const Hobject Image, Hobject* Matrix, const Htuple LdGray, const Htuple Direction)

Herror gen_cooc_matrix(Hobject Regions, Hobject Image, Hobject* Matrix, const HTuple& LdGray, const HTuple& Direction)

HImage HRegion::GenCoocMatrix(const HImage& Image, const HTuple& LdGray, const HTuple& Direction) const

HImageArray HRegionArray::GenCoocMatrix(const HImage& Image, const HTuple& LdGray, const HTuple& Direction) const

void GenCoocMatrix(const HObject& Regions, const HObject& Image, HObject* Matrix, const HTuple& LdGray, const HTuple& Direction)

HImage HImage::GenCoocMatrix(const HRegion& Regions, Hlong LdGray, Hlong Direction) const

HImage HRegion::GenCoocMatrix(const HImage& Image, Hlong LdGray, Hlong Direction) const

void HOperatorSetX.GenCoocMatrix(
[in] IHUntypedObjectX* Regions, [in] IHUntypedObjectX* Image, [out] IHUntypedObjectX*Matrix, [in] VARIANT LdGray, [in] VARIANT Direction)

IHImageX* HImageX.GenCoocMatrix(
[in] IHRegionX* Regions, [in] Hlong LdGray, [in] Hlong Direction)

IHImageX* HRegionX.GenCoocMatrix(
[in] IHImageX* Image, [in] Hlong LdGray, [in] Hlong Direction)

static void HOperatorSet.GenCoocMatrix(HObject regions, HObject image, out HObject matrix, HTuple ldGray, HTuple direction)

HImage HImage.GenCoocMatrix(HRegion regions, int ldGray, int direction)

HImage HRegion.GenCoocMatrix(HImage image, int ldGray, int direction)

Description

The operator gen_cooc_matrixgen_cooc_matrixGenCoocMatrixgen_cooc_matrixGenCoocMatrixGenCoocMatrix 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. LdGrayLdGrayLdGrayLdGrayLdGrayldGray indicates the number of gray values to be distinguished (namely 2^LdGray).

Example: Input image with gray values     0 0 3
         (scaled with LdGray=2)           1 1 2
                                          1 2 3

        Co-occurrence matrix (not scaled):

                2 0 0 1          0 1 1 0
            0:  0 2 2 0    135:  1 0 1 1
                0 2 0 1          1 1 0 0
                1 0 1 0          0 1 0 0

                0 2 0 0          0 1 0 0
           90:  2 2 1 0     45:  1 2 0 1
                0 1 0 2          0 0 2 0
                0 0 2 0          0 1 0 0
 

Attention

Note that the operator gen_cooc_matrixgen_cooc_matrixGenCoocMatrixgen_cooc_matrixGenCoocMatrixGenCoocMatrix only considers the given RegionsRegionsRegionsRegionsRegionsregions and ignores any previously set domain of the input image ImageImageImageImageImageimage.

Parallelization

Parameters

RegionsRegionsRegionsRegionsRegionsregions (input_object)  region(-array) objectHRegionHRegionHRegionHRegionXHobject

Region to be checked.

ImageImageImageImageImageimage (input_object)  singlechannelimage objectHImageHImageHImageHImageXHobject (byte)

Image providing the gray values.

MatrixMatrixMatrixMatrixMatrixmatrix (output_object)  image(-array) objectHImageHImageHImageHImageXHobject * (real)

Co-occurrence matrix (matrices).

LdGrayLdGrayLdGrayLdGrayLdGrayldGray (input_control)  integer HTupleHTupleHTupleVARIANTHtuple (integer) (int / long) (Hlong) (Hlong) (Hlong) (Hlong)

Number of gray values to be distinguished (2^LdGray).

Default value: 6

List of values: 1, 2, 3, 4, 5, 6, 7, 8

Typical range of values: 1 ≤ LdGray LdGray LdGray LdGray LdGray ldGray ≤ 256 (lin)

Minimum increment: 1

Recommended increment: 1

DirectionDirectionDirectionDirectionDirectiondirection (input_control)  integer HTupleHTupleHTupleVARIANTHtuple (integer) (int / long) (Hlong) (Hlong) (Hlong) (Hlong)

Direction of neighbor relation.

Default value: 0

List of values: 0, 45, 90, 135

Result

The operator gen_cooc_matrixgen_cooc_matrixGenCoocMatrixgen_cooc_matrixGenCoocMatrixGenCoocMatrix 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>)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("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>)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>). If necessary an exception is raised.

Possible Predecessors

draw_regiondraw_regionDrawRegiondraw_regionDrawRegionDrawRegion, gen_circlegen_circleGenCirclegen_circleGenCircleGenCircle, gen_ellipsegen_ellipseGenEllipsegen_ellipseGenEllipseGenEllipse, gen_rectangle1gen_rectangle1GenRectangle1gen_rectangle1GenRectangle1GenRectangle1, gen_rectangle2gen_rectangle2GenRectangle2gen_rectangle2GenRectangle2GenRectangle2, thresholdthresholdThresholdthresholdThresholdThreshold, erosion_circleerosion_circleErosionCircleerosion_circleErosionCircleErosionCircle, binomial_filterbinomial_filterBinomialFilterbinomial_filterBinomialFilterBinomialFilter, gauss_imagegauss_imageGaussImagegauss_imageGaussImageGaussImage, smooth_imagesmooth_imageSmoothImagesmooth_imageSmoothImageSmoothImage, sub_imagesub_imageSubImagesub_imageSubImageSubImage

Alternatives

cooc_feature_imagecooc_feature_imageCoocFeatureImagecooc_feature_imageCoocFeatureImageCoocFeatureImage

See also

cooc_feature_matrixcooc_feature_matrixCoocFeatureMatrixcooc_feature_matrixCoocFeatureMatrixCoocFeatureMatrix

Module

Foundation


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