Features

List of Operators

area_center_grayAreaCenterGrayAreaCenterGrayarea_center_gray

Compute the area and center of gravity of a region in a gray value image.

cooc_feature_imageCoocFeatureImageCoocFeatureImagecooc_feature_image

Calculate a co-occurrence matrix and derive gray value features thereof.

cooc_feature_matrixCoocFeatureMatrixCoocFeatureMatrixcooc_feature_matrix

Calculate gray value features from a co-occurrence matrix.

elliptic_axis_grayEllipticAxisGrayEllipticAxisGrayelliptic_axis_gray

Compute the orientation and major axes of a region in a gray value image.

entropy_grayEntropyGrayEntropyGrayentropy_gray

Determine the entropy and anisotropy of images.

estimate_noiseEstimateNoiseEstimateNoiseestimate_noise

Estimate the image noise from a single image.

fit_surface_first_orderFitSurfaceFirstOrderFitSurfaceFirstOrderfit_surface_first_order

Calculate gray value moments and approximation by a first order surface (plane).

fit_surface_second_orderFitSurfaceSecondOrderFitSurfaceSecondOrderfit_surface_second_order

Calculate gray value moments and approximation by a second order surface.

fuzzy_entropyFuzzyEntropyFuzzyEntropyfuzzy_entropy

Determine the fuzzy entropy of regions.

fuzzy_perimeterFuzzyPerimeterFuzzyPerimeterfuzzy_perimeter

Calculate the fuzzy perimeter of a region.

gen_cooc_matrixGenCoocMatrixGenCoocMatrixgen_cooc_matrix

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

gray_featuresGrayFeaturesGrayFeaturesgray_features

Calculates gray value features for a set of regions.

gray_histoGrayHistoGrayHistogray_histo

Calculate the gray value distribution.

gray_histo_absGrayHistoAbsGrayHistoAbsgray_histo_abs

Calculate the gray value distribution.

gray_histo_rangeGrayHistoRangeGrayHistoRangegray_histo_range

Calculate the gray value distribution of a single channel image within a certain gray value range.

gray_projectionsGrayProjectionsGrayProjectionsgray_projections

Calculate horizontal and vertical gray-value projections.

histo_2dimHisto2dimHisto2dimhisto_2dim

Calculate the histogram of two-channel gray value images.

intensityIntensityIntensityintensity

Calculate the mean and deviation of gray values.

min_max_grayMinMaxGrayMinMaxGraymin_max_gray

Determine the minimum and maximum gray values within regions.

moments_gray_planeMomentsGrayPlaneMomentsGrayPlanemoments_gray_plane

Calculate gray value moments and approximation by a plane.

plane_deviationPlaneDeviationPlaneDeviationplane_deviation

Calculate the deviation of the gray values from the approximating image plane.

select_graySelectGraySelectGrayselect_gray

Select regions based on gray value features.

shape_histo_allShapeHistoAllShapeHistoAllshape_histo_all

Determine a histogram of features along all threshold values.

shape_histo_pointShapeHistoPointShapeHistoPointshape_histo_point

Determine a histogram of features along all threshold values.