Image processing method, image processing apparatus and image processing program
AssigneeNEC Corporation
InventorKenta SENZAKI
Life of this patent
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Abstract
An image processing apparatus 10 includes a first generation unit 11 which generates a plurality of lower-resolution images having different row-direction resolutions by changing a resolution in a row direction of an image to be processed to a plurality of lower resolutions, a second generation unit 12 which generates a differential image by taking a difference between two of the plurality of lower-resolution images, and a computation unit 13 which computes a correction amount for the pixel values of a predetermined column of the image to be processed by use of a statistical quantity of the pixel values of a predetermined column of the differential image.
Claims20
An image processing method comprising:
- generating a plurality of lower-resolution images having different row-direction resolutions by changing a resolution in a row direction of an image to be processed to a plurality of lower resolutions;
- generating a differential image by taking a difference between two of the plurality of lower-resolution images;
- and
- computing a correction amount for the pixel values of a predetermined column of the image to be processed by use of a statistical quantity of the pixel values of a predetermined column of the differential image.
An image processing apparatus comprising:
- a first generation unit configured to generate a plurality of lower-resolution images having different row-direction resolutions by changing a resolution in a row direction of an image to be processed to a plurality of lower resolutions;
- a second generation unit configured to generate a differential image by taking a difference between two of the plurality of lower-resolution images;
- and
- a computation unit configured to compute a correction amount for the pixel values of a predetermined column of the image to be processed by use of a statistical quantity of the pixel values of a predetermined column of the differential image.
A non-transitory computer-readable recording medium having recorded therein an image processing program causing a computer to perform:
- first generation processing of generating a plurality of lower-resolution images having different row-direction resolutions by changing a resolution in a row direction of an image to be processed to a plurality of lower resolutions;
- second generation processing of generating a differential image by taking a difference between two of the plurality of lower-resolution images;
- and
- computation processing of computing a correction amount for the pixel values of a predetermined column of the image to be processed by use of a statistical quantity of the pixel values of a predetermined column of the differential image.
Dependencies are inferred from the claim text.