期刊
JOURNAL OF SENSORS
卷 2021, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2021/5563698
关键词
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资金
- Shandong Provincial Natural Science Foundation [ZR2019FM059]
- Science and Technology Plan for Youth Innovation of Shandong Universities [2019KJN012]
- National Natural Science Foundation of China [61403283]
This study proposes a novel image correction method based on adaptive local gamma transformation and color compensation, which effectively improves the visual effect of images in weak-light environments.
In weak-light environments, images suffer from low contrast and the loss of details. Traditional image enhancement models are usually failure to avoid the issue of overenhancement. In this paper, a simple and novel correction method is proposed based on an adaptive local gamma transformation and color compensation, which is inspired by the illumination reflection model. Our proposed method converts the source image into YUV color space, and the Y component is estimated with a fast guided filter. The local gamma transform function is used to improve the brightness of the image by adaptively adjusting the parameters. Finally, the dynamic range of the image is optimized by a color compensation mechanism and a linear stretching strategy. By comparing with the state-of-the-art algorithms, it is demonstrated that the proposed method adaptively reduces the influence of uneven illumination to avoid overenhancement and improve the visual effect of low-light images.
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