Patent ID: 8400693
Filing Date: 2013-03-19
Classification: G06K,H04N

Abstract:
1. An image defect diagnostic system comprising: an acquiring unit that acquires image data generated by reading a test target image to be tested for an image defect; an image defect detecting unit that detects image defects occurring in the test target image, from the image data acquired by the acquiring unit; a coordinate conversion processor that performs coordinate conversion processing to convert position coordinate information on the image defects detected by the image defect detecting unit into position coordinate information on the image defects in each coordinate system obtained by rotating a coordinate system for the test target image by every predetermined angle by using a coordinate point set in advance in the test target image as rotation center coordinates, the position coordinate information being information on position coordinates in the test target image; an occurrence state detecting unit that detects an occurrence state of the image defects in each coordinate system, by using the position coordinate information in each coordinate system obtained by rotating the coordinate system for the test target image by every predetermined angle in the coordinate conversion processing performed by the coordinate conversion processor; a setting unit that sets a coordinate rotation angle for the coordinate conversion processing to be performed on the position coordinate information on the image defects, on the basis of the occurrence state of the image defects detected in each coordinate system by the occurrence state detecting unit; and a feature amount extracting unit that extracts a feature amount characterizing the image defects, by using the position coordinate information in a coordinate system obtained by rotating the coordinate system for the test target image by the coordinate rotation angle set by the setting unit.