Flow-Guided Sparse Transformer for Video Deblurring

• URL: http://arxiv.org/abs/2201.01893v1
• Date: Thu, 6 Jan 2022 02:05:32 GMT
• Title: Flow-Guided Sparse Transformer for Video Deblurring
• Authors: Jing Lin, Yuanhao Cai, Xiaowan Hu, Haoqian Wang, Youliang Yan, Xueyi Zou, Henghui Ding, Yulun Zhang, Radu Timofte, Luc Van Gool
• Abstract summary: FlowGuided Sparse Transformer (F GST) is a framework for video deblurring. FGSW-MSA enjoys the guidance of the estimated optical flow to globally sample spatially sparse elements corresponding to the same scene patch in neighboring frames. Our proposed F GST outperforms state-of-the-art patches on both DVD and GOPRO datasets and even yields more visually pleasing results in real video deblurring.
• Score: 124.11022871999423
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Exploiting similar and sharper scene patches in spatio-temporal neighborhoods is critical for video deblurring. However, CNN-based methods show limitations in capturing long-range dependencies and modeling non-local self-similarity. In this paper, we propose a novel framework, Flow-Guided Sparse Transformer (FGST), for video deblurring. In FGST, we customize a self-attention module, Flow-Guided Sparse Window-based Multi-head Self-Attention (FGSW-MSA). For each $query$ element on the blurry reference frame, FGSW-MSA enjoys the guidance of the estimated optical flow to globally sample spatially sparse yet highly related $key$ elements corresponding to the same scene patch in neighboring frames. Besides, we present a Recurrent Embedding (RE) mechanism to transfer information from past frames and strengthen long-range temporal dependencies. Comprehensive experiments demonstrate that our proposed FGST outperforms state-of-the-art (SOTA) methods on both DVD and GOPRO datasets and even yields more visually pleasing results in real video deblurring. Code and models will be released to the public.

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