| 摘要 |
PROBLEM TO BE SOLVED: To accurately remove a pixel value for a red leakage component from an infrared image. SOLUTION: Regarding pixels that correspond each other in a red image and an infrared image obtained from a photograph film, a first variable where an average pixel value Ave of the infrared image is added by subtracting the pixel value of the infrared image from the pixel value of the red image, and a second variable that is the pixel value of the red image, are used to perform a first regression analysis (S22, S23) to calculate a tentative CF value (S24). Then, a threshold is determined from the tentative CF value (S25), a third variable that is the pixel value of the red image and a fourth variable that is the pixel value of the infrared image are used with only a pixel where the pixel value of the infrared image is equal to or more than the threshold as a target, and a second regression analysis is performed (S26, S27), thus acquiring the ratio of leakage. Further, the infrared image is corrected by subtracting a value where the pixel value in the red image is multiplied by the ratio of leakage from the pixel value in the read image (S28). COPYRIGHT: (C)2004,JPO |
