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A real-time framework for HD video defogging using modified dark channel prior

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Abstract

Foggy weather reduces the quality of video capture and seriously affects the normal work of video surveillance, remote sensing monitoring, and intelligent driving. Many methods have been proposed to remove video haze. However, under the premise of ensuring real-time performance, their defogging effect needs to be further improved. This paper improves the dark channel prior (DCP) dehazing algorithm, and designs a defogging framework that takes into account good dehazing effect and real-time processing. First, an adaptive threshold segmentation algorithm is proposed, which can well solve the serious color cast problem in brighter areas in DCP. Second, an algorithm for preserving image details using gradients is proposed, which achieves a good balance between detail preservation and computational efficiency. Then, each frame of video is evenly divided into a plurality of sub-areas, and the sub-areas are sequentially processed in a pipeline manner, which improves calculation efficiency. Finally, a high-definition real-time video defogging framework with a resolution of 1920 × 1080 and 60 frames/s is realized on the ZYNQ 7035.

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Authors and Affiliations

  1. School of Information Science and Technology, Southwest Jiaotong University, Chengdu, 610097, China

    Xinchun Wu, Xiangyu Chen, Xiao Wang, Xiaojun Zhang, Shuxuan Yuan & Biao Sun

  2. Qianghua Times (Chengdu) Technology Co., Ltd, Chengdu, 610095, China

    Xiaobing Huang

  3. College of Communication Engineering, Chengdu University of Information Technology, Chengdu, 610225, China

    Lintao Liu

Authors
  1. Xinchun Wu
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  2. Xiangyu Chen
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  3. Xiao Wang
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  4. Xiaojun Zhang
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  5. Shuxuan Yuan
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  6. Biao Sun
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  7. Xiaobing Huang
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  8. Lintao Liu
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Contributions

In this paper, Xinchun Wu is in charge of algorithm research and overall framework design, Xiangyu Chen is in charge of circuit design, Xiao Wang is in charge of algorithm simulation, Xiaojun Zhang is in charge of circuit simulation, Shuxuan Yuan is in charge of data sorting, Biao Sun is in charge of drawing charts, and Xiaobing Huang is in charge of document sorting, Lintao Liu is in charge of circuit design.

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Correspondence to Xinchun Wu.

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Wu, X., Chen, X., Wang, X. et al. A real-time framework for HD video defogging using modified dark channel prior. J Real-Time Image Proc 21, 55 (2024). https://doi.org/10.1007/s11554-024-01432-w

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