| 钱军,万里勇.引导滤波与像素重分布的低照图像增强[J].光电子激光,2023,(11):1168~1177 |
| 引导滤波与像素重分布的低照图像增强 |
| Low light image enhancement based on guided filter and pixel redistribution |
| 投稿时间：2022-04-18 修订日期：2022-10-12 |
| DOI： |
| 中文关键词: 图像增强 Retinex 引导滤波 像素重分布 |
| 英文关键词:image enhancement Retinex guided filter pixel redistribution |
| 基金项目:江西省教育厅科学技术研究项目(GJJ2207302,GJJ191100, GJJ212517)、江西省教育科学“十四五”规划课题(19YB266, 21YB248)和南昌工学院科技计划博士专项(NGKJ-22-01) 资助项目 |
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| 中文摘要: |
| 针对现有的图像增强方法存在欠增强、过增强以及对比度低等缺陷,提出了一种引导滤波与像素重分布的低照图像增强算法。方法充分利用引导滤波的边缘保持特性,用引导滤波对光照图像进行估计,然后对光照图像的像素进行相对均匀重分布,全面提升光照图像的亮度与对比度。最后将像素重分布 增强处理后的光照图像和反射图像作反Retinex变换,得到最后的增强图像。实验结果证明,相对现有的图像增强方法,本文方法具有更优的图像增强效果,图像对比度与纹理结构更清晰。 |
| 英文摘要: |
| Aiming at overcoming the limitations of under enhancement,over enhancement and low contrast in the existing image enhancement methods,a low light image enhancement method based on guided filter and pixel redistribution is proposed.This method estimates the illumination part of image with guided filter,taking full advantage of the edge preservation capability of the guided filter;the pixels of the illumination image are subjected to relatively uniformly redistribution, so as to comprehensively improve the brightness and contrast of illumination image.The final enhanced image is obtained by performing inverse Retinex transformation on the illumination image enhanced by pixel redistribution and the refleced image.The experimental results confirm that compared with existing enhancement methods,the proposed method achieves better enhanced effect,the contrast and textural structures of enhanced image are clearer. |
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