Summary of Planar Shape Recognition
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چکیده
Shape is one of the most important properties of objects. This lecture summarizes the algorithms for shape analysis. Several commonly used simple descriptors are stated first. Then the algorithms are classified into boundary (or external) descriptors and regional (or internal) descriptors based on the boundary tracking only and boundary plus the interior tracking respectively. The characteristics and application of each approach are described. Finally the algorithms of shape recognition are discussed based on three categories of them: template matching, statistical methods, and syntactic (or structural) methods. In addition, state-of-art approaches appearing in recent years are also discussed in each corresponding section.
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