Apparatus and method for determining noise
AssigneeSamsung Electronics Co., Ltd.
InventorsMi-yeon Lee, Seung-hoon Han
Life of this patent
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Abstract
A noise determining apparatus is provided. The noise determining apparatus includes a video determiner which determines type of video according to a pre-set criterion, a noise level determiner which determines a level of noise with reference to output from the video determiner, and a noise determiner which determines presence or absence of noise with reference to output from the noise level determiner. Accordingly, incorrect discrimination between a texture area of low level which is similar to noise and noise having a great level difference with respect to neighboring pixels is reduced.
Claims20
A noise determining apparatus comprising:
- a video type determiner which determines a type of a video according to a determination criterion;
- a noise size setting unit which determines a size of noise with reference to an output from the video type determiner;
- and
- a noise determiner which determines if a pixel window of an image of the video is a noise or not with reference to an output from the noise size setting unit.
A noise determining method comprising:
- determining a type of a video according to a determination criterion;
- determining a size of noise with reference to the determined type of the video;
- and
- determining if a pixel window of an image of the video is a noise or not with reference to the determined size of the noise.
A method for determining noise in a video signal, the method comprising:
- analyzing the video signal to detect characteristics of the video signal;
- determining a type of the video signal based on the detected characteristics;
- determining a size of noise of the video signal based on the determined type of the video signal;
- calculating a correlation between a specific area of a frame of the video signal and neighboring pixels;
- and
- determining if a pixel window of an image of the video is a noise or not with reference to the calculated correlation.
Dependencies are inferred from the claim text.