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传统的基于金字塔的影像增量更新方法中,变化区域的影像以金字塔的影像块形式存储。本文提出一种自动生成影像块的方法,将较为集中的变化区域合并为近似其外边界的最小凸多边形,以此为边界裁剪原始影像得到变化区域的影像块,一定程度上减少了数据的冗余。 更多还原

【Abstract】 The traditional image incremental updating method is based on the Pyramid Model,it stores the changing images in form of the pyramid blocks.In this paper,a new automatic method of generating image blocks is presented.In this method,a set of changing area polygons are merged into a minimum convex hull,and then the original image is cut by bound of the hull,and the image blocks are generated.This method can reduce a certain degree of data redundancy. 更多还原