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Pattern Recognition and Artificial Intelligence  2024, Vol. 37 Issue (4): 313-327    DOI: 10.16451/j.cnki.issn1003-6059.202404003
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Missing Content Restoration and Ghosting Suppression Network for High Dynamic Range Imaging
YANG Zhenmei1, LI Huafeng1, ZHANG Yafei1
1. Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650504

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Abstract  

High dynamic range(HDR) imaging based on multi-exposure fusion aims to generate high-quality HDR images by integrating the information from multiple low dynamic range(LDR) images. However, HDR imaging is faced with two major challenges, ghosting artifact suppression in motion regions and lost information restoration in over-saturated areas. To comprehensively address the challenges of restoring missing content from reference images and suppressing ghosting artifacts in motion regions, a missing content restoration and ghosting suppression network for high dynamic range imaging is proposed in this paper. In terms of content restoration, a predictive filtering-based content restoration block is introduced. The filtering kernel predicted by the content restoration block is employed to filter reference image features, integrating key information from both reference images and non-reference images to provide richer information for effective reconstruction of missing content. To suppress ghosting artifacts in motion regions and fully exploit complementary information from non-reference images, deformable convolutions are introduced to align features from non-reference images with those from the reference image. Additionally, to enhance the HDR image reconstruction capability of the network, a three-branch image reconstruction module is constructed, including a main branch and two auxiliary branches. The auxiliary branches assist the main branch with better preserved details during the generation of HDR results. Experimental results demonstrate superior performance of the proposed network.

Key wordsHigh Dynamic Range Imaging      Ghosting Suppression      Predictive Filtering      Content Restoration     
Received: 11 December 2023     
ZTFLH: TP 391.41  
Fund:

National Natural Science Foundation of China(No.62161015), Yunnan Fundamental Research Projects(No.202301AV070004)

Corresponding Authors: LI Huafeng, Ph.D., professor. His research interests include image processing and computer vision.   
About author:: YANG Zhenmei, Master student. Her research interests include pattern recognition and image processing. ZHANG Yafei, Ph.D., associate profe-ssor. Her research interests include image processing and pattern recognition.
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Cite this article:   
YANG Zhenmei,LI Huafeng,ZHANG Yafei. Missing Content Restoration and Ghosting Suppression Network for High Dynamic Range Imaging[J]. Pattern Recognition and Artificial Intelligence, 2024, 37(4): 313-327.
URL:  
http://manu46.magtech.com.cn/Jweb_prai/EN/10.16451/j.cnki.issn1003-6059.202404003      OR     http://manu46.magtech.com.cn/Jweb_prai/EN/Y2024/V37/I4/313
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