Patent ID: 8311315
Filing Date: 2012-11-13
Classification: G01N,G06T

Abstract:
1. A pattern inspection method comprising: magnifying and taking a color image including a plurality of pixels; generating a first color information of each of the plurality of pixels, wherein the first color information includes three color coordinate components, red (R), green (G), and blue (B), of an RGB color space; converting the first color information of each of the plurality of pixels into a second color information including three color coordinate components, hue (H), saturation (S), and brightness (B) of an HSB color space; generating a gray-scale image in accordance with the brightness (B); generating a binary image from the gray-scale image by regarding one of the plurality of pixels having a brightness (B) of less than a predetermined threshold as black pixel and another one of the plurality of pixels having a brightness (B) of more than the predetermined threshold as a white pixel; detecting an inspection object from the binary image by obtaining coordinate data of at least two of the plurality of pixels overlapped by the inspection object; and judging the inspection object by comparing a reference saturation (S) of a preset non-defective reference color information with a saturation (S) of the at least two of the plurality of pixels.