Patent ID: 6072908
Filing Date: 2000-06-06
Classification: H04N

Abstract:
A grid moving method using a selective pixel searching method, comprising the steps of:forming a grid with respect to an image of an object having a predetermined shape, defining blocks each having a predetermined shape, defining blocks each having a predetermined size, and moving the grid;a search and count step for selectively searching a pixel without searching all pixels, terminating the search when a pixel of the object is first searched, performing a step for determining the block in which an object exists as an object block with respect to the entire blocks, and counting the number of blocks in which the object exists; anddetermining a new grid start point having a minimum number of blocks in accordance with a result of the counting; and, wherein in said step for selectively searching whether an object exists in the block, the searching is performed with respect to all pixels formed in an edge boundary portion of the block.