| 摘要 |
PROBLEM TO BE SOLVED: To constantly and uniformly correct pixel-by-pixel variations in an output that is output from an infrared detector. SOLUTION: Prior to factory shipment, a target temperature with an infrared image capturing apparatus 10a taking images thereat and a plurality of environmental temperatures for the infrared image capturing apparatus are set to observe signal luminance of each of pixels constituting a detector 4 and average signal luminance of one image plane for each setting. Observation results are used to calculate correction factor data for converting signal luminance of each of the pixels so that it coincides with the average signal luminance of one image plane to store the data in a memory A5a. When a target is imaged by the infrared image capturing apparatus, a corrective calculation is performed on the respective pixels by a detector corrector 9 for linearly approximating the signal luminance of taken images of the respective pixels to the average luminance value of one image plane from the factor data, input luminance of the taken images of the respective pixels, and the temperature of an infrared lens 1a observed in a temperature sensor 3, thereby constantly and uniformly correcting pixel-by-pixel variations in an output that is output from the detector without performing preparation/updating of correction data by an operator, etc. while without hindering the imaging of a photographic object. COPYRIGHT: (C)2010,JPO&INPIT
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