Patent ID: 6236466
Filing Date: 2001-05-22
Classification: H04N

Abstract:
An image processing method for converting a gray-level image into a binary image by using an image processing system, the gray-level image comprising a plurality of gray-level pixels arranged in a matrix format, the binary image comprising the same number of binary pixels arranged in the same manner as the gray-level image, the image processing system comprising a memory for storing programs and the gray-level and binary images, and a processor for executing the programs stored in the memory, the image processing method comprising the following steps:(1) examining the gray-level pixels of the gray-level image so as to locate and define gray-level pixels with boundary characteristics as boundary points according to a predetermined boundary determination method, and defining gray-level pixels next to each of the boundary points as neighboring points according to a predetermined neighboring point determination method; and(2) converting each of the boundary points and neighboring points of the gray-level image into a corresponding binary pixel according to a first pixel conversion method, and converting each of the gray-level pixels other than the boundary points and neighboring points in the gray-level image into a corresponding binary pixel according to a second pixel conversion method to generate the binary image.