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De-mosaicing method and circuit for performing edge detection based on raw data

An edge detection and demosaicing technology, applied in the field of electronics, can solve the problem of poor image edge recovery effect and so on

Pending Publication Date: 2022-04-15
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a demosaic method and circuit for edge detection based on raw data, to solve the problem that the traditional interpolation demosaic algorithm has a poor recovery effect on image edges

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  • De-mosaicing method and circuit for performing edge detection based on raw data
  • De-mosaicing method and circuit for performing edge detection based on raw data
  • De-mosaicing method and circuit for performing edge detection based on raw data

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Embodiment Construction

[0090] The present invention provides a demosaic method and circuit for edge detection based on raw data. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0091] In the embodiments and claims, unless the article is specifically limited, "a", "an", "the" and "the" may also include plural forms. If there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. Significance or implicitly indicates the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features.

[0092] It ...

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Abstract

The invention discloses a de-mosaicing method and circuit for carrying out edge detection based on raw data, and the method comprises the steps: carrying out the edge detection of the raw data, and judging whether there is a pixel located on the edge or not; the raw data comprises a green pixel, a blue pixel and a red pixel, and the raw data is distributed in a Sudoku manner; if the raw data has the pixel located on the edge, judging the edge direction of the edge pixel detected in the raw data; and respectively carrying out demosaicing processing on the edge pixels and the non-edge pixels. According to the method, edge detection is carried out on raw data, pixels located on the edge and pixels located at other positions are distinguished, and for the pixels on the edge, demosaicing processing is carried out on the center pixel of the Sudoku after the direction of the edge pixels is determined, so that the edge pixels are recovered; the edge sawtooth phenomenon existing in the demosaiced image can be eliminated, the color blur of pixels on the edge is avoided, and the image edge recovery effect is improved.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a demosaic method and circuit for edge detection based on raw data. Background technique [0002] Most of the current consumer-grade digital cameras obtain the pixel information of the captured image by covering a layer of color filter array (Color Filter Array, CFA) on the image sensor, and the original image data obtained in this way is called raw data. In the raw data, each pixel has only the pixel value of one of the three primary colors of red, green and blue, and by processing the raw data, the missing pixel data is restored to obtain the RGB three-channel color image The process is called demosaicing. Since the demosaicing process is directly related to the color image quality captured by a digital camera, demosaicing is very important not only for simple shooting, but also for digital image processing tasks such as image recognition and image enhancement. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/13G06T7/90
CPCG06T7/13G06T7/90G06T2207/10004G06T5/73
Inventor 安丰伟张洋溢陈蕾
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA