A demosaic method and device

A technology of demosaicing and chroma components, which is applied in the direction of instruments, TVs, picture signal generators, etc., can solve the problems of image resolution and sharpness degradation, and achieve the effect of improving resolution and sharpness

Active Publication Date: 2020-08-07
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present application provides a method and device for demosaicing to solve the problem of image resolution and sharpness degradation existing in the prior art

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Embodiment Construction

[0135] The embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0136] The applicant found in the process of implementing this application that a color camera is generally used to capture images and demosaicing the monochrome image. Since the color camera uses a monochrome sensor for imaging, the monochrome sensor uses Bayer A color filter array (CFA), which provides a filter pattern of 50% green elements, 25% red elements, and 25% blue elements, such as figure 1 The Bayer color filter array shown

[0137] A pixel position can only capture one channel signal of the red, green and blue (RGB) channel signal, and the weak item can obtain the other two color channel signals. It is necessary to interpolate each color channel signal in the horizontal or vertical direction to obtain the other two color channels. For example, a certain pixel position can only capture the green channel signal, so the blue cha...

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Abstract

A method and device for demosaicing are used to solve the problem of image resolution and definition degradation. The method is applied to an electronic device including a color camera and a black-and-white camera. The color camera and the black-and-white camera are arranged side by side on the body of the electronic device. Process the first luminance component of the color image; obtain the black and white image captured by the black and white camera at the same time of the target scene, and extract the second luminance component of the black and white image; register the first luminance component and the second luminance component through a preset algorithm generating a third luminance component; extracting a chrominance component of the color image to be processed based on the third luminance component; and synthesizing a color output image based on the extracted chrominance component of the color image to be processed and the third luminance component.

Description

technical field [0001] The present application relates to the technical field of digital imaging, in particular to a method and device for demosaicing. Background technique [0002] At present, whether it is a SLR camera, a card machine or a mobile phone, a color image is obtained through monochrome sensor imaging. Monochromatic sensor imaging is implemented based on a Bayer (Bayer) color filter array (English: Color Filter Array, CFA for short). Bayer CFA generally only captures one channel signal in the red, green and blue (RGB) channel signals at a pixel position. To reproduce a full-color image (for example: RGB image), it is necessary to restore the other two unknown channel signals at a pixel position. At present, signals of other two unknown channels at a pixel position are generally restored by a demosaicking method. [0003] Usually, the demosaicing method is to collect a monochrome image through a single camera system, and interpolate each color channel signal in...

Claims

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Application Information

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IPC IPC(8): H04N5/232
CPCG06T3/4015H04N23/45H04N25/13H04N23/10H04N23/843H04N25/134G06T7/90
Inventor 陈刚罗巍
Owner HUAWEI TECH CO LTD
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