Efficient descriptor extraction over multiple levels of an image scale space
作者： Sundeep Vaddadi , John H. Hong , Yuriy Reznik , Chong Uk. Lee , Onur C. Hamsici
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摘要: A local feature descriptor for a point in an image is generated over multiple levels of scale space. The gradually smoothened to obtain plurality spaces. may be identified as the interest within first space from derivatives obtained each orientation maps (from derivatives) Each then (e.g., convolved) corresponding smoothed maps. Therefore, by sparsely sampling two or more spaces
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