Apparatus, method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorShinnosuke Osawa
Life of this patent
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Abstract
A method includes detecting a gradation area in an input image, and performing, based on a detection result acquired by the detecting, for an area that is not the gradation area, gain processing on the input image by using a gain based on a first gain characteristic in which different gains are set depending on luminance values, whereas performing, for the gradation area, gain processing on the input image by using a gain in which an amount of change in gain with respect to a change in luminance value is more reduced than the first gain characteristic.
Claims19
An apparatus comprising:
- at least one processor;
- and
- a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, perform operations as:
- a detection unit configured to detect a gradation area in an input image;
- and
- a processing unit configured to, based on a detection result acquired by the detection unit, for an area that is not the gradation area, use a gain based on a first gain characteristic in which different gains are set depending on luminance values to perform gain processing on the input image, and, for the gradation area, use a gain in which an amount of change in gain with respect to a change in luminance value is more reduced than the first gain characteristic to perform gain processing on the input image.
A method comprising:
- detecting a gradation area in an input image;
- and
- performing, based on a detection result acquired by the detecting, for an area that is not the gradation area, gain processing on the input image by using a gain based on a first gain characteristic in which different gains are set depending on luminance values, and performing, for the gradation area, gain processing on the input image by using a gain in which an amount of change in gain with respect to a change in luminance value is more reduced than the first gain characteristic.
A non-transitory computer-readable storage medium storing a program for causing a computer to execute a method, the method comprising:
- detecting a gradation area in an input image;
- and
- performing, based on a detection result acquired by the detecting, for an area that is not the gradation area, gain processing on the input image by using a gain based on a first gain characteristic in which different gains are set depending on luminance values, and performing, for the gradation area, gain processing on the input image by using a gain in which an amount of change in gain with respect to a change in luminance value is more reduced than the first gain characteristic.
Dependencies are inferred from the claim text.