Color image demosaicing method and system based on FPGA and storage medium

Abstract

According to the color image demosaicing method and system based on the FPGA and the storage medium, the technical problem that for traditional algorithms such as bilinear interpolation, the quality of reconstructed images is poor due to the fact that correlation between different color channels cannot be effectively utilized can be solved. The method comprises the following steps implemented by computer equipment: S100, determining the arrangement mode of a CFA array; s200, determining whether a color channel of a pixel point in the bayer image is an R channel, a G channel or a B channel; s300, obtaining pixel point information in a neighborhood around the pixel point to be reconstructed; s400, reconstructing a GB color component of the R channel; s500, reconstructing an RB color component of the G channel; and S600, reconstructing the RG color component of the B channel. According to the method, correlation and gradient information between different color channels are fully utilized,and a high-quality full-color image can be reconstructed. And meanwhile, two pixel points can be processed in one clock period, so that the processing speed of the algorithm is obviously improved.

Description

technical field [0001] The invention relates to the technical field of digital images, in particular to an FPGA-based color image demosaicing method and system. Background technique [0002] For color images, each pixel needs to collect data of three channels of RGB. However, image sensors such as CCD and CMOS are used in conjunction with the color filter array CFA, and each pixel can only obtain the color data of one channel in the RGB channel, that is, the original image in raw format. Reconstructing a full-color image based on the incomplete sampling of the CFA color channel output, that is, reconstructing the complete RGB three-color channel of each pixel, is the demosaic process of the color image. For traditional algorithms such as bilinear interpolation, because the correlation between different color channels cannot be effectively used, the quality of the reconstructed image is not very ideal. Contents of the invention [0003] An FPGA-based color image demosaici...

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Problems solved by technology

[0003] An FPGA-based color image demosaicing method and system proposed by the present invention can solve problems such as traditional bilinear interpolation algorithms, because the correlation between different color channels cannot be effectively used, resulting in poor quality of the reconstructed image technical issues

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