Image processing apparatus
Optimal shading correction is achieved even when exposure times are different. An apparatus includes a section that stores a γ property of an image pickup device, a section that stores a shading pattern acquired by the image pickup device, and a first exposure time, a section that stores image data...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | Optimal shading correction is achieved even when exposure times are different. An apparatus includes a section that stores a γ property of an image pickup device, a section that stores a shading pattern acquired by the image pickup device, and a first exposure time, a section that stores image data acquired by the image pickup device and a second exposure time, a section that calculates a pre-correction pattern, based on the stored shading pattern and the stored γ property, a section that calculates a revised pattern by performing γ correction for the calculated pre-correction pattern after multiplying the calculated pre-correction pattern by a ratio of the second exposure time to the first exposure time, and a section that performs shading correction for the stored image data by using the calculated revised pattern. |
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