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Denoising and interpolation united method and system for Bayer images

A technology of joint denoising and interpolation, applied in the direction of color signal processing circuits, etc., can solve the problems of high algorithm complexity, unfavorable hardware implementation, consumption of large hardware resources, etc., to achieve simple circuit implementation, increased utilization, and less hardware resource consumption. Effect

Inactive Publication Date: 2014-01-22
SHANGHAI JIAO TONG UNIV +1
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Problems solved by technology

[0005] Although the performance of the existing Bayer format image joint noise reduction interpolation algorithm is already very good, the complexity of the algorithm is very high, and the hardware implementation process will consume a lot of hardware resources, which is not conducive to hardware implementation

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  • Denoising and interpolation united method and system for Bayer images
  • Denoising and interpolation united method and system for Bayer images
  • Denoising and interpolation united method and system for Bayer images

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Embodiment Construction

[0042] The implementation of the present invention is described below through specific examples and in conjunction with the accompanying drawings, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific examples, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0043] figure 1 It is a flow chart of steps of a method for joint denoising and interpolation of Bayer format images in the present invention. like figure 1 Shown, a kind of Bayer format image joint denoising interpolation method of the present invention comprises the following steps:

[0044] Step 101, interpolating the G channel and the B and R channels respectively. The pixels in the ...

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Abstract

The invention discloses a denoising and interpolation united method and system for Bayer images. The method comprises steps as follows: pixels in an original Bayer image are classified into G and BR, and interpolation is performed on G channel and BR channel respectively; data after interpolation are transformed from G domain and BR domain to delta domain and summation domain; horizontal filtering processing is performed on the data after domain transformation; interpolation is performed on the delta layer, a delta_B layer and a delta_R layer are recovered, and meanwhile, the delta layer obtained in the last step is stored as a delta_G layer; and longitudinal filtering processing is performed on the data after interpolation and color recovery is performed to obtain processed data. By means of the denoising and interpolation united method and system for the Bayer images, algorithmic complexity can be reduced greatly, and a large amount of hardware resources can be saved.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to a method and system for performing joint interpolation and noise reduction processing on Bayer format images to generate the Bayer format image joint denoising and interpolation of RGB images after denoising. Background technique [0002] Modern digital cameras mostly use Color Filter Array (CFA) to sample image color information. The characteristic of the CFA array is that each pixel contains only one color information (Red, Green or Blue), and the other two color information needs to be estimated by known color information. The process of using the color information of the surrounding points to estimate the missing color information of the central point and restore a value is called demosaicing, and since demosaicing is generally performed by interpolation operations, so It can also be referred to as color interpolation (color interpolation). [0003] Currently commonl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/64
Inventor 祝希金威贺光辉洪亮李琛赵宇航何卫锋
Owner SHANGHAI JIAO TONG UNIV
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