Regions - Features🔗
On this topic🔗
Operators🔗
area_center: Area and center of regions.
area_holes: Compute the area of holes of regions.
circularity: Shape factor for the circularity (similarity to a circle) of a region.
compactness: Shape factor for the compactness of a region.
connect_and_holes: Number of connection components and holes
contlength: Contour length of a region.
convexity: Shape factor for the convexity of a region.
diameter_region: Maximal distance between two boundary points of a region.
eccentricity: Shape features derived from the ellipse parameters.
elliptic_axis: Calculate the parameters of the equivalent ellipse.
euler_number: Calculate the Euler number.
find_neighbors: Search direct neighbors.
get_region_index: Index of all regions containing a given pixel.
get_region_thickness: Access the thickness of a region along the main axis.
hamming_distance: Hamming distance between two regions.
hamming_distance_norm: Hamming distance between two regions using normalization.
height_width_ratio: Compute the width, height, and aspect ratio of the surrounding
rectangle parallel to the coordinate axes.
inner_circle: Largest inner circle of a region.
inner_rectangle1: Largest inner rectangle of a region.
moments_region_2nd: Calculate the geometric moments of regions.
moments_region_2nd_invar: Geometric moments of regions.
moments_region_2nd_rel_invar: Geometric moments of regions.
moments_region_3rd: Geometric moments of regions.
moments_region_3rd_invar: Geometric moments of regions.
moments_region_central: Geometric moments of regions.
moments_region_central_invar: Geometric moments of regions.
orientation_region: Orientation of a region.
rectangularity: Shape factor for the rectangularity of a region.
region_features: Calculate shape features of regions.
roundness: Shape factors from contour.
runlength_distribution: Distribution of runs needed for runlength encoding of a region.
runlength_features: Characteristic values for runlength coding of regions.
select_region_point: Choose all regions containing a given pixel.
select_region_spatial: Pose relation of regions.
select_shape: Choose regions with the aid of shape features.
select_shape_proto: Choose regions having a certain relation to each other.
select_shape_std: Select regions of a given shape.
smallest_circle: Smallest surrounding circle of a region.
smallest_rectangle1: Surrounding rectangle parallel to the coordinate axes.
smallest_rectangle2: Smallest surrounding rectangle with any orientation.
spatial_relation: Pose relation of regions with regard to the coordinate axes.