Abstract
We study the problem of low lighting image enhancement. Previous enhancement methods for images under low lighting conditions usually fail to consider the factor of image degradation during image formation. As a result, the lost contrast could not be recovered after enhancement. This paper will adaptively recover the contrast and adjust the exposure for low lighting images. Our first contribution is the modeling of image degradation in low lighting conditions. Then, the local maximum color value prior is proposed, i.e., in most regions of well exposed images, the local maximum color value of a pixel will be very high. By combining the image degradation model and local maximum color value prior, we propose to recover the un-degraded images under low lighting conditions. Last, an adaptive exposure adjustment module is proposed to obtain the final result. We show that our approach enables better enhancement comparing with popular image editing tools and academic algorithms.
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Xuan Dong received his BS in computer science and technology from Beihang University, Beijing, China in 2010. He is a PhD candidate in the Department of Computer Science and Technology, Tsinghua University, China. His current research interests include computational photography, video processing, video coding, and image segmentation.
Jiangtao Wen received his BS, MS, and PhD all in electrical engineering from Tsinghua University, Beijing, China in 1992, 1994, and 1996, respectively. From 1996 to 1998, he was a staff research fellow at the University of California, Los Angeles (UCLA). After UCLA, he served as the principal scientist at PacketVideo, chief technical officer at Morphbius Technology Inc., director of Video Codec Technologies at Mobilygen Corporation, and as a Technology Advisor at Ortiva Wireless and Stretch, Inc. Since 2009, he has been a Professor in the Department of Computer Science and Technology, Tsinghua University, China. His research focuses on multimedia communication over challenging networks and computational photography.
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Dong, X., Wen, J. Low lighting image enhancement using local maximum color value prior. Front. Comput. Sci. 10, 147–156 (2016). https://doi.org/10.1007/s11704-015-4353-1
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DOI: https://doi.org/10.1007/s11704-015-4353-1