| 摘要 |
PROBLEM TO BE SOLVED: To efficiently detect a pixel defect included in an image signal. SOLUTION: An average level Lav, the maximum level Lmax and the minimum level Lmin are generated from image signals Y(P1) to Y(P8) of neighboring pixels P1 to P8 adjacent to a target pixel P0. DifferenceΔL between the maximum level Lmax and the minimum level Lmin is added to the average level Lav to generate a criterion value Lw of a white defect, the differenceΔL is subtracted from the average level Lav to generate a criterion value Lb of a black defect. Then, the respective criterion values Lw, Lb are compared with an image signal Y(P0) of the target pixel and the pixel defect is discriminated. COPYRIGHT: (C)2006,JPO&NCIPI
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