Removal method of zipper effect of bayer interpolation

A Bayer, zipper technology, applied in the field of color filter array (CFA) color interpolation processing methods and systems, can solve problems such as zipper effect

Inactive Publication Date: 2018-06-05
珠海亿智电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, common Bayer interpolation methods include bilinear interpolation method, Hamilton & Adam edge-adaptive interpolation method, etc. fringe zone These methods tend to suffer from severe zipper effects

Method used

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  • Removal method of zipper effect of bayer interpolation
  • Removal method of zipper effect of bayer interpolation
  • Removal method of zipper effect of bayer interpolation

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings.

[0017] figure 2 A specific embodiment of an image processing system with a zipper effect removal module is shown, the image processing system mainly includes an image acquisition unit 202, an image processor 201 and an image output or storage unit 208, the image acquisition unit 202 and the image processor 201 connected, the image processor 201 is connected with the image output or storage unit 208, the image processor 201 is used to receive and process the image data collected by the image acquisition unit 202, and send it to the image output or storage unit 208 for display on the terminal screen or stored in a non-volatile storage device.

[0018] In a specific embodiment, the image acquisition unit can be expressed as a camera or an image sensor, and the Bayer image data structure collected by it is as follows image 3 As shown, it should be noted that, image 3...

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Abstract

The invention discloses a removal method of a zipper effect of bayer interpolation. The bayer interpolation is a device of interpolating missing color components of pixel points of a color filter array; and the zipper effect is an image error appearing most easily in the bayer interpolation. According to the characteristics that the zipper effect mutational in a brightness domain and even in a chroma domain, the method comprises the steps of converting RGB (red, green and blue) image data after the bayer interpolation to a brightness-chroma color space (such as YUV and Lab) via color space transformation, determining texture types of regions where pixel points of an image brightness component are located one by one, performing low-pass filtration in case of an even region, performing horizontal and vertical filtration in case of a horizontal or vertical marginal region, constituting a new image with the filtered image brightness component and the original chroma component, and performing color space inverse transformation to form a final RGB image. The method can effectively eliminate the zipper effect generated by the bayer interpolation and significantly improves image quality.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a color filter array (CFA) color interpolation processing method and system. Background technique [0002] When a full-color digital image is displayed on a common display device, each pixel generally corresponds to a set of red, green, and blue components. However, in a single-sensor image acquisition system, each photosensitive unit in the sensor will cover a specific Color filter, the array composed of these filters is called color filter array (CFA), each photosensitive unit is only responsible for collecting a color information corresponding to its color filter, the original ( RAW) data does not fully contain all the red, green, and blue information required for each pixel position. Therefore, when obtaining a full-color image from the raw data, a color interpolation device is required. [0003] In practical applications, there are many kinds of color filter arrays (CFA), th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T5/10G06T7/40G06T7/90
CPCG06T3/4015G06T5/10G06T7/40G06T7/90
Inventor 杨少军
Owner 珠海亿智电子科技有限公司
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