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US08929664B2 Shape detection using chain code states 有权
使用链码状态的形状检测

Shape detection using chain code states
Abstract:
A method for identifying objects in a digital image includes tracing chain codes associated with the contour of the object; a series of states is maintained, and the next chain codes in the contour are accepted only if they comply with allowed chain codes for each state. Certain chain codes trigger a transition into a next state. If a disallowed chain code is encountered, the process halts.
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