Operator Reference
Features
List of Operators
area_center_gray- Compute the area and center of gravity of a region in a gray value image.
cooc_feature_image- Calculate a co-occurrence matrix and derive gray value features thereof.
cooc_feature_matrix- Calculate gray value features from a co-occurrence matrix.
elliptic_axis_gray- Compute the orientation and major axes of a region in a gray value image.
entropy_gray- Determine the entropy and anisotropy of images.
estimate_noise- Estimate the image noise from a single image.
fit_surface_first_order- Calculate gray value moments and approximation by a first order surface (plane).
fit_surface_second_order- Calculate gray value moments and approximation by a second order surface.
fuzzy_entropy- Determine the fuzzy entropy of regions.
fuzzy_perimeter- Calculate the fuzzy perimeter of a region.
gen_cooc_matrix- Calculate the co-occurrence matrix of a region in an image.
gray_features- Calculates gray value features for a set of regions.
gray_histo- Calculate the gray value distribution.
gray_histo_abs- Calculate the gray value distribution.
gray_histo_range- Calculate the gray value distribution of a single channel image within a certain gray value range.
gray_projections- Calculate horizontal and vertical gray-value projections.
histo_2dim- Calculate the histogram of two-channel gray value images.
intensity- Calculate the mean and deviation of gray values.
min_max_gray- Determine the minimum and maximum gray values within regions.
moments_gray_plane- Calculate gray value moments and approximation by a plane.
plane_deviation- Calculate the deviation of the gray values from the approximating image plane.
select_gray- Select regions based on gray value features.
shape_histo_all- Determine a histogram of features along all threshold values.
shape_histo_point- Determine a histogram of features along all threshold values.