Abstract
This lecture overviews Shape Description that has many applications in object recognition and image compression. It covers the following topics in detail: Chain Codes. Polygonal Contour Approximations. Fourier Descriptors. Quadtrees. Pyramids for multiresolution image representation. Shape Features (Object perimeter, Contour curvature, Bending energy, area, compactness, diameter). Topological descriptors and Euler number. Moment Descriptors. Thinning Algorithms.
Image pyramid.
Shape-Description-v2.7.1