Image processing apparatus, image processing method, and computer product
AssigneeFujitsu Limited
InventorsYuushi Toyoda, Masayoshi Shimizu
Life of this patent
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Abstract
An image processing apparatus includes a surrounding-pixels selecting unit that selects surrounding pixels that surround a correction pixel in an input image based on a low-pass filter, a reference-pixels selecting unit that selects pixels from the surrounding pixels based on pixel values of the correction pixel and the surrounding pixels, a smoothed-image creating unit that applies the low-pass filter to the reference pixels to create a smoothed image of the reference pixels, and an output image creating unit that creates an output image based on the smoothed image, and a difference image between the smoothed image and the input image.
Claims13
An image processing apparatus comprising:
- a surrounding-pixels selecting unit that selects surrounding pixels that surround a correction pixel in an input image based on a low-pass filter;
- a reference-pixels selecting unit that selects reference pixels from the surrounding pixels based on pixel values of the correction pixel and the surrounding pixels;
- a smoothed-image creating unit that applies the low-pass filter to the reference pixels to create a smoothed image of the reference pixels;
- and
- an output image creating unit that creates an output image based on the smoothed image, and a difference image between the smoothed image and the input image.
A computer-readable recording medium that stores therein a computer program causing a computer to execute:
- selecting surrounding pixels that surround a correction pixel in an input image based on a low-pass filter;
- selecting reference pixels from the surrounding pixels based on pixel values of the correction pixel and the surrounding pixels;
- applying the low-pass filter to the reference pixels to create a smoothed image of the reference pixels;
- and
- creating an output image based on the smoothed image, and a difference image between the smoothed image and the input image.
An image processing method comprising:
- selecting surrounding pixels that surround a correction pixel in an input image based on a low-pass filter;
- selecting reference pixels from the surrounding pixels based on pixel values of the correction pixel and the surrounding pixels;
- applying the low-pass filter to the reference pixels to create a smoothed image of the reference pixels;
- and
- creating an output image based on the smoothed image, and a difference image between the smoothed image and the input image.
Dependencies are inferred from the claim text.