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The traditional Contour Tracing algorithm works on the binary image.It is developed that a new model called Facula Diffusion which can work directly on gray-scaled images according to the principle of human vision.The diffusion operation is controlled by four factors including approximation,closing,length-limiting,and hit-rate.Based on this model,three shape indices,i.e.,dimension index,abnormity index,and fluctuation index,were put forward to describe the shape of objects.The rule of shape indices selectio... 相似文献
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