Edge self-adaptive color restoration method and system
An adaptive and color technology, applied in color TV, color signal processing circuit, components of color TV, etc., can solve the problems of poor restoration effect and blurred image edges, so as to improve the effect, maintain the sharpness, and improve the image quality. The effect of noise ratio
Inactive Publication Date: 2016-05-11
SHENZHEN UNIV
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Bilinear interpolation can obtain similar and good results to other color restoration methods in smooth areas where image transformation is slow; however, in areas with sharp changes such as image edges, simple average interpolation will cause the edges of the image to become blurred and restore the effect. poor
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[0045] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0046] An edge-adaptive color restoration method, the method comprises the following steps:
[0047] Collect the original image in Bayer format;
[0048] According to the original image, the gradient information of the original image and the color difference between different color channels, it is judged whether the pixel to be interpolated is in the smooth area or the edge area, and then the missing part of the green component in the original image is interpolated and reconstructed according to the result of the judgment, to obtain Green component at full resolution;
[0049]Using the gradient information of the original image, the color difference between different color channels, and the full-resolution green component, the missing parts of the red and blue components are respectively interpolated and ...
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The invention discloses an edge self-adaptive color restoration method, comprising steps of collecting an original image in a Bayer format, determining whether a pixel point of a value to be interpolated is in a smooth area or a rim area according to the original image, the original image gradient information and the color difference between the different color channels, performing interpolation value reconstruction on the green component in the original image to obtain the full resolution green component, using the gradient information of the original image, the color difference between the channels of different colors and the full resolution green component to perform interpolation reconstruction on the deletion portions of the red component and the blue component to obtain the full resolution red component and the full resolution blue component, performing color difference correction on the full resolution red component, the full resolution green component and the full resolution blue component, and providing a rim self-adaptive color restoration system. The invention effectively improves the signal to noise ratio of the restored image, improves the color restoration effect and can be widely applied in the digital image processing field.
Description
technical field [0001] The invention relates to the field of digital image processing, in particular to a color restoration algorithm and system. Background technique [0002] Due to reasons such as production cost and camera structure, most existing digital cameras collect images by covering a layer of color filter templates on the camera sensor, and the Bayer color filter template is the most commonly used one among these color filter templates. Due to the image collected by the digital camera of the Bayer color filter template, each pixel only has one of the three color components of red (R), green (G), and blue (B), and the other two components are missing. To obtain a full-color image, it is also necessary to interpolate the missing color components at each point, so that each pixel on the image has three color components of red (R), green (G), and blue (B) at the same time. [0003] In the prior art, there are many color restoration methods for Bayer color filter temp...
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Login to View More IPC IPC(8): H04N1/60H04N9/64
CPCH04N1/6008H04N9/646
Inventor 田劲东李东谢勇明
Owner SHENZHEN UNIV