| 摘要 |
PROBLEM TO BE SOLVED: To provide an infrared ray image correction apparatus detecting a blinking defect with high accuracy without being affected by lens shading correction deviation, offset correction deviation and sensitivity correction deviation. SOLUTION: An infrared ray solid-state imaging element images an object the temperature of which is almost constant for an imaging time by closing or opening a shutter so that the temperature is almost constant for the imaging time, an image memory stores a plurality of frames of outputs from the infrared ray solid-state imaging element, a blinking defect detection means calculates an average and a standard deviation of outputs of the infrared ray solid-state imaging element over a plurality of frames for pixels configuring the infrared ray solid-state imaging element, calculates an absolute value subtracting the average from the output of the infrared ray solid-state imaging element by each frame, and regards a blinking defect to be caused in the pixels wherein the absolute value is greater than a constant number multiple of the standard deviation because of the discrimination that the output variation from the average is considerably greater and the output is momentarily fluctuated. COPYRIGHT: (C)2005,JPO&NCIPI
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