Image processing device, image processing method, and program

An image processing method implemented by a computer programmed as an image processing device to correct chromatic aberration of image data, the image processing method comprising:

• detecting, by the computer, overexposed pixels by using a luminance signal of the image data;
• generating overexposure distribution information indicating distribution of the detected overexposed pixels;
• and
• calculating an amount of chromatic aberration of each pixel by using the generated overexposure distribution information and chromatic aberration amount distribution information indicating distribution of the amount of chromatic aberration, which is an amount of correction regarding chromatic aberration of nearby pixels due to overexposure of a target pixel, the calculating including calculating the amount of chromatic aberration of each pixel by adding a contribution value of chromatic aberration from each of a plurality of overexposed pixels within a correction range of the target pixel.

A non-transitory computer-readable medium encoded with computer instructions, which when executed by a computer, cause the computer to execute a process of correcting chromatic aberration of image data, the process comprising:

• detecting overexposed pixels by using a luminance signal of the image data;
• generating overexposure distribution information indicating distribution of the detected overexposed pixels;
• and
• calculating an amount of chromatic aberration of each pixel by using the generated overexposure distribution information and chromatic aberration amount distribution information indicating distribution of an amount of chromatic aberration, which is the amount of correction regarding chromatic aberration of nearby pixels due to overexposure of a target pixel, the calculating including calculating the amount of chromatic aberration of each pixel by adding a contribution value of chromatic aberration from each of a plurality of overexposed pixels within a correction range of the target pixel.

An image processing device to correct chromatic aberration of image data, the image processing device comprising:

• an overexposed pixel detecting unit configured to detect overexposed pixels by using a luminance signal of the image data;
• an overexposure distribution information generating unit configured to generate overexposure distribution information indicating distribution of the overexposed pixels detected by the overexposed pixel detecting unit;
• and
• a chromatic aberration amount calculating unit, including a processor, configured to calculate an amount of chromatic aberration of each pixel by using the overexposure distribution information generated by the overexposure distribution information generating unit and chromatic aberration amount distribution information indicating distribution of the amount of chromatic aberration, which is an amount of correction regarding chromatic aberration of nearby pixels due to overexposure of a target pixel, the chromatic aberration amount calculating unit configured to calculate the amount of chromatic aberration of each pixel by adding a contribution value of chromatic aberration from each of a plurality of overexposed pixels within a correction range of the target pixel.