一种宽动态范围下的红外图像局部细节增强算法
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A local details enhancement algorithm for high dynamic range infrared images
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    摘要:

    针对红外图像在宽动态范围下压缩到窄动态范围时带来的图像细节显示模糊、暗处细节丢失以及对比度偏低等问题,提出了一种基于引导滤波分层的红外图像细节自适应增强算法。对背景层利用优化的CLAHE算法来进行压缩,对细节层利用脉冲噪声的多尺度检测并结合韦伯定理的方法进行压缩;解决前述的弱细节模糊以及暗部细节丢失问题。综合主、客观实验结果表明,相对于映射类、分层增强类以及Retinex和集成学习类增强算法,本文所提算法在背景层对比度和光照强度优化、细节层噪声抑制和弱细节增强上取得优异效果;在信息熵、PSNR和SSIM三种客观评测指标下综合效果最佳;处理速度达到150 f/s。在保证实时性的同时,不仅提高了图像的整体对比度,还突出了图像的局部细节,适用于宽温度范围下复杂环境的应用。

    Abstract:

    The image details are blurred,the details in the dark areas are lost,and the contrast becomes low during the high dynamic infrared images compression.To solve the above mentioned problems,an infrared image details adaptive enhancement algorithm based on guided filtering layering is proposed.The histogram equalization method with optimized penalty term is used for the background compression,and the combination of impulse noise multi-scale detection and Weber′s theorem is adopted to solve the dark areas detail loss and the blurring of weak detail.Compared with the traditional enhancement algorithms based on layered idea,mapping,Retinex and integrated learning,the integrated main and objective experimental results show that the proposed algorithm has good effects in background layer contrast and illumination intensity optimization,detail layer noise suppression and weak detail enhancement.The proposed algorithm provides the optimistic results in terms of information entropy,PSNR and SSIM.And the processing speed reaches 150 frames per second.The proposed algorithm not only improves the overall contrast of the image,but also highlights the local details of the image.It is suitable for the wide temperature application under complex environments.

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引用本文

李继泉,时勤功,李井文.一种宽动态范围下的红外图像局部细节增强算法[J].激光与红外,2019,49(8):1026~1032
LI Ji-quan, SHI Qin-gong, LI Jing-wen. A local details enhancement algorithm for high dynamic range infrared images[J]. LASER & INFRARED,2019,49(8):1026~1032

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  • 在线发布日期: 2019-12-30
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