| 摘要 |
PROBLEM TO BE SOLVED: To improve a detection rate in alteration detection of image data.SOLUTION: A CFA pattern acquisition unit 202 and a DMA acquisition unit 203 acquire pattern information on a color filter array that is used for photographing input image data, and algorithm information on color interpolation processing. A comparison image creation unit 204 creates comparison image data from the input image data by using the pattern information and the algorithm information. An alteration detection unit 205 compares the comparison image data with the input image data to detect alteration of the input image data. |
