IMAGE PROCESSOR AND ELECTRONIC CAMERA, AND ALLOWABLE VALUE SETTING METHOD

摘要

PROBLEM TO BE SOLVED: To solve the following problem in a conventional image processing technology for correcting the pixel value of defective pixel: an appropriate corrected pixel value is not always obtained and the image quality of photographed images is damaged at a part where an image structure is flat and a part provided with high frequency components. SOLUTION: The image processor includes: a first corrected pixel value calculation part for calculating a prescribed correction amount for the pixel value of the defective pixel of an imaging device and calculating a first corrected pixel value; a corrected pixel value allowable range setting part for setting a corrected pixel value allowable range including the first corrected pixel value; a second corrected pixel value calculation part for performing an interpolating operation using the pixel values of pixels around the defective pixel and calculating a second corrected pixel value; a third corrected pixel value calculation part for comparing the second corrected pixel value with the corrected pixel value allowable range and calculating a third corrected pixel value; and a correction value substituting part for replacing the pixel value of the defective pixel by the third corrected pixel value as. COPYRIGHT: (C)2009,JPO&INPIT