Methods and electronic apparatus for grid pattern noise detection
AssigneeSamsung Electronics Co., Ltd.
InventorsSudarshan RAMENAHALLI GOVINDARAJU, Rahul VARNA
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Abstract
A method for detecting grid pattern noise in an image, the method comprising: obtaining the image; determining a spectrum map of at least one color channel of the image; detecting an occurrence of periodic peaks in the spectrum map; determining a distance between a set of adjacent peaks based on a location of the periodic peaks in the spectrum map; detecting a presence of grid pattern noise in the image based on the distance; and eliminating, based on the detecting of the presence of the grid pattern noise, the grid pattern noise from the image, resulting in a revised image.
Claims19
A method for detecting grid pattern noise in an image, the method comprising:
- obtaining the image;
- determining a spectrum map of at least one color channel of the image;
- detecting an occurrence of periodic peaks in the spectrum map;
- determining a distance between a set of adjacent peaks based on a location of the periodic peaks in the spectrum map;
- detecting a presence of grid pattern noise in the image based on the distance;
- and
- eliminating, based on the detecting of the presence of the grid pattern noise, the grid pattern noise from the image, resulting in a revised image.
An electronic apparatus for detecting grid pattern noise in an image, the electronic apparatus comprising:
- one or more processors comprising processing circuitry;
- and
- memory storing instructions,
- wherein the instructions, when executed by the one or more processors individually or collectively, cause the electronic apparatus to:
- obtain the image;
- determine a spectrum map of at least one color channel of the image;
- detect an occurrence of periodic peaks in the spectrum map;
- determine a distance between a set of adjacent peaks based on a location of the periodic peaks in the spectrum map;
- detect a presence of grid pattern noise in the image based on the distance;
- and
- eliminate, based on the detection of the presence of the grid pattern noise, the grid pattern noise from the image, resulting in a revised image.
Dependencies are inferred from the claim text.