| Class | Description | 
|---|---|
| AffineInvariantMoments | 
 Affine-invariant moment descriptor for the
 shape of a connected component. 
 | 
| BasicShapeDescriptor | 
 Basic descriptors of the shape of a connected component. 
 | 
| BoundaryDistanceDescriptor | 
 Distance-from-centroid descriptor for convex shapes. 
 | 
| ColourDescriptor | 
 Descriptors based on the first-order statistics
 of the colour of pixel values in an image. 
 | 
| HuMoments | 
 Implementation of the 7 Hu moments for describing
 connected component shape. 
 | 
| Enum | Description | 
|---|---|
| BasicShapeDescriptor.BasicShapeDescriptorType | 
 An enum of all the different basic shape descriptors. 
 | 
| ColourDescriptor.ColourDescriptorType | 
 The different types of statistic available. 
 |