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Image edge enhancement method

An image edge and image technology, applied in the field of digital image processing, to achieve the effect of improving the effect, saving resources and reducing complexity

Active Publication Date: 2013-06-19
GALAXYCORE SHANGHAI
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The problem solved by the present invention is to improve the existing image edge enhancement algorithm, based on the color filter array of Bayer mode, reduce the complexity of existing image edge enhancement, reduce the impact of noise on the image edge, and improve the effect after image processing

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Embodiment Construction

[0023] The inventor finds that the existing image edge enhancement processing is more complicated. To solve this problem, the present invention is based on the color filter array of the Bayer pattern, which reduces the complexity of the existing image edge enhancement, reduces the influence of noise on the image edge, and improves the image quality. The effect after processing.

[0024] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] Specifically, first refer to figure 1 A schematic flowchart of a specific embodiment of an image edge enhancement method is shown.

[0026] Step S1: Provide an image, the image includes four types of 5×5 bayer domain matrices, and the bayer domain matrix is ​​composed of red pixel points R, green pixel points G and blue pixel points B.

[0027] Specif...

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Abstract

The invention relates to an image edge enhancement method which comprises the following steps: providing an image, wherein the image comprises four forms of 5*5bayer domain matrixes; calculating the sum of pixel values of any two adjacent green pixels in the bayer domain matrix in the 45-degree and 135-degree directions to obtain a crossed pixel matrix; designing a corresponding high-pass filter template A according to the crossed pixel matrix; transforming the high-pass filter template A into a corresponding 5*5 high-pass filter template B according to different types of 5*5 bayer domain matrixes; calculating the high pass of each pixel in each form of bayer domain matrix by using the 5*5 high-pass filter template; and stacking the high pass of each calculated pixel on the corresponding pixel on the interpolated image to form a new edge-enhanced image. The technical scheme is based on bayer domain data rather than data obtained by interpolation operation, thereby saving the SRAM (System Random Access Memory) resources, especially lowering the complexity of the existing image edge enhancement, and improving the effect after image processing.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to an image edge enhancement method. Background technique [0002] Image edge enhancement is a kind of image enhancement processing. It is a technical method of emphasizing the edge where the brightness value (or hue) of the adjacent area of ​​the original image (or image) differs greatly to highlight the processing. The edge-enhanced image can show the boundary of the image more clearly. . [0003] Most of the existing edge enhancement operators act on the gray value of the image pixel. Specifically, for the actual visible color image, each pixel contains three color information of R, G, and B. First, the image pixel needs to be The R, G, and B values ​​of the points are converted into gray values, and the conversion formula is Y=0.299×R+0.587×G+0.144×B, and then edge enhancement processing is performed on the gray values ​​through corresponding edge enhancement operators....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
Inventor 孟庆马小妹
Owner GALAXYCORE SHANGHAI
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