Image processing apparatus, image processing method, and non-transitory computer-readable storage medium
AssigneeCanon Kabushiki Kaisha
InventorsKouta Murasawa, Hidetsugu Kagawa, Shuhei Ogawa, Maya Yazawa
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Abstract
An image processing apparatus, comprises: a detection unit configured to detect a predetermined region of an image from image data; and a correction unit configured to correct a value of luminance in the predetermined region detected by the detection unit. The correction unit corrects a high-frequency value out of a low-frequency value and the high-frequency value obtained from a luminance value of a pixel having a value of luminance higher than a predetermined threshold in the predetermined region so that a high-frequency contrast weakens.
Claims15
An image processing apparatus, comprising:
- a detection unit configured to detect a predetermined region of an image from image data;
- and
- a correction unit configured to correct a value of luminance in the predetermined region detected by the detection unit,
- wherein the correction unit corrects a high-frequency value out of a low-frequency value and the high-frequency value obtained from a luminance value of a pixel having a value of luminance higher than a predetermined threshold in the predetermined region so that a high-frequency contrast weakens.
An image processing method, comprising:
- detecting a predetermined region from image data;
- and
- correcting a luminance value in the detected predetermined region,
- wherein a high-frequency value out of a low-frequency value and the high-frequency value obtained from a luminance value of a pixel having a luminance value higher than a predetermined threshold in the predetermined region is corrected so that a high-frequency contrast weakens.
A non-transitory computer-readable storage medium storing a program for causing a computer to function as:
- a detection unit configured to detect a predetermined region from image data;
- and
- a correction unit configured to correct a value of luminance in the predetermined region detected by the detection unit,
- wherein the correction unit corrects a high-frequency value out of a low-frequency value and the high-frequency value obtained from a luminance value of a pixel having a luminance value higher than a predetermined threshold in the predetermined region so that a high-frequency contrast weakens.
Dependencies are inferred from the claim text.