Method and device for processing an image to remove color fringe
AssigneesIndustry-University Cooperation Foundation Sogang University, Samsung Electronics Co., Ltd.
InventorsTAE CHAN KIM, WON HO CHO, HAE JIN JU, RAE HONG PARK, DONG KYU LEE
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Abstract
In image processing, a color fringe is removed. The processing includes selecting a maximum gradient magnitude among gradient magnitudes for each of color components in an image, calculating a boundary of a dilated near-saturation region in the image, detecting a transition region in the image according to the maximum gradient magnitude and the dilated near-saturation region, and removing a color fringe from the transition region.
Claims20
An image processing method, comprising:
- selecting a maximum gradient magnitude among gradient magnitudes for each of color components of an image;
- calculating a boundary of a dilated near-saturation region in the image;
- detecting a transition region in the image according to the maximum gradient magnitude and a boundary of the dilated near-saturation region;
- and
- removing a color fringe from the transition region to obtain a processed image.
An image processing method, comprising:
- receiving a digital image signal including color components for each of plural pixels constituting an image frame;
- selecting a maximum gradient magnitude among gradient magnitudes for each of the color components of the image frame;
- calculating a boundary of a dilated near-saturation region in the image frame;
- detecting a transition region in the image frame according to the maximum gradient magnitude and a boundary of the dilated near-saturation region;
- generating a processed digital image signal in which a color fringe from the transition region has been removed.
An image processor, comprising:
- a gradient magnitude unit for selecting a maximum gradient magnitude among gradient magnitudes for each of color components in an image;
- a near-saturation region detection unit for calculating a boundary of a dilated near-saturation region in the image;
- a transition region detection unit for detecting a transition region in the image according to the maximum gradient magnitude and a boundary of the dilated near-saturation region;
- and
- a correction block for removing a color fringe from the transition region.
Dependencies are inferred from the claim text.