cooc_feature_matrixcooc_feature_matrixCoocFeatureMatrixCoocFeatureMatrixcooc_feature_matrix (算子)

名称

cooc_feature_matrixcooc_feature_matrixCoocFeatureMatrixCoocFeatureMatrixcooc_feature_matrix — 根据共生矩阵计算灰度值特征。

签名

描述

算子 cooc_feature_matrixcooc_feature_matrixCoocFeatureMatrixCoocFeatureMatrixCoocFeatureMatrixcooc_feature_matrix calculates from a co-occurrence matrix (CoocMatrixCoocMatrixCoocMatrixCoocMatrixcoocMatrixcooc_matrix) the energy (EnergyEnergyEnergyEnergyenergyenergy), correlation (CorrelationCorrelationCorrelationCorrelationcorrelationcorrelation), local homogeneity (HomogeneityHomogeneityHomogeneityHomogeneityhomogeneityhomogeneity) and contrast (ContrastContrastContrastContrastcontrastcontrast).

算子 cooc_feature_matrixcooc_feature_matrixCoocFeatureMatrixCoocFeatureMatrixCoocFeatureMatrixcooc_feature_matrix calculates the gray value features from the part of the input matrix generated by gen_cooc_matrixgen_cooc_matrixGenCoocMatrixGenCoocMatrixGenCoocMatrixgen_cooc_matrix corresponding to the direction matrix indicated by the parameters LdGrayLdGrayLdGrayLdGrayldGrayld_gray and DirectionDirectionDirectionDirectiondirectiondirection according to the following formulae:

• Energy (Measure for image homogeneity):

• Correlation (Measure for gray value dependencies):

• Local homogeneity:

• Contrast (Measure for the size of the intensity differences):

where

Width of CoocMatrixCoocMatrixCoocMatrixCoocMatrixcoocMatrixcooc_matrix,

Entry of co-occurrence matrix,

,

,

,

。

注意

The region of the input image is disregarded.

执行信息

• 多线程类型：可重入（与非独占算子并行运行）。
• 多线程作用域：全局（可从任何线程调用）。
• 在元组级别上自动并行化。

参数

结果

算子 cooc_feature_matrixcooc_feature_matrixCoocFeatureMatrixCoocFeatureMatrixCoocFeatureMatrixcooc_feature_matrix 返回值 2 ( H_MSG_TRUE) if an image with defined gray values is passed and the parameters are correct.当输入为空（无可用输入图像）时可设置行为通过算子 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>)。如有必要，则抛出异常。

可能的前趋

gen_cooc_matrixgen_cooc_matrixGenCoocMatrixGenCoocMatrixGenCoocMatrixgen_cooc_matrix

替代

cooc_feature_imagecooc_feature_imageCoocFeatureImageCoocFeatureImageCoocFeatureImagecooc_feature_image

另见

intensityintensityIntensityIntensityIntensityintensity, min_max_graymin_max_grayMinMaxGrayMinMaxGrayMinMaxGraymin_max_gray, entropy_grayentropy_grayEntropyGrayEntropyGrayEntropyGrayentropy_gray, select_grayselect_graySelectGraySelectGraySelectGrayselect_gray

模块

基础