MuCAN: Multi-Correspondence Aggregation Network for Video Super-Resolution

• URL: http://arxiv.org/abs/2007.11803v1
• Date: Thu, 23 Jul 2020 05:41:27 GMT
• Title: MuCAN: Multi-Correspondence Aggregation Network for Video Super-Resolution
• Authors: Wenbo Li, Xin Tao, Taian Guo, Lu Qi, Jiangbo Lu, and Jiaya Jia
• Abstract summary: Video super-resolution (VSR) aims to utilize multiple low-resolution frames to generate a high-resolution prediction for each frame. Inter- and intra-frames are the key sources for exploiting temporal and spatial information. We build an effective multi-correspondence aggregation network (MuCAN) for VSR.
• Score: 63.02785017714131
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Video super-resolution (VSR) aims to utilize multiple low-resolution frames to generate a high-resolution prediction for each frame. In this process, inter- and intra-frames are the key sources for exploiting temporal and spatial information. However, there are a couple of limitations for existing VSR methods. First, optical flow is often used to establish temporal correspondence. But flow estimation itself is error-prone and affects recovery results. Second, similar patterns existing in natural images are rarely exploited for the VSR task. Motivated by these findings, we propose a temporal multi-correspondence aggregation strategy to leverage similar patches across frames, and a cross-scale nonlocal-correspondence aggregation scheme to explore self-similarity of images across scales. Based on these two new modules, we build an effective multi-correspondence aggregation network (MuCAN) for VSR. Our method achieves state-of-the-art results on multiple benchmark datasets. Extensive experiments justify the effectiveness of our method.

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