This paper reviews the first NTIRE challenge on quality enhancement of compressed video, with a focus on the proposed methods and results. In this challenge, the new Large-scale Diverse Video (LDV) dataset is employed. The challenge has three tracks. Tracks 1 and 2 aim at enhancing the videos compressed by HEVC at a fixed QP, while Track 3 is designed for enhancing the videos compressed by x265 at a fixed bit-rate. Besides, the quality enhancement of Tracks 1 and 3 targets at improving the fidelity (PSNR), and Track 2 targets at enhancing the perceptual quality. The three tracks totally attract 482 registrations. In the test phase, 12 teams, 8 teams and 11 teams submitted the final results of Tracks 1, 2 and 3, respectively. The proposed methods and solutions gauge the state-of-the-art of video quality enhancement. The homepage of the challenge: https://github.com/RenYang-home/NTIRE21_VEnh
@article{arxiv.2104.10781,
title = {NTIRE 2021 Challenge on Quality Enhancement of Compressed Video: Methods and Results},
author = {Ren Yang and Radu Timofte and Jing Liu and Yi Xu and Xinjian Zhang and Minyi Zhao and Shuigeng Zhou and Kelvin C. K. Chan and Shangchen Zhou and Xiangyu Xu and Chen Change Loy and Xin Li and Fanglong Liu and He Zheng and Lielin Jiang and Qi Zhang and Dongliang He and Fu Li and Qingqing Dang and Yibin Huang and Matteo Maggioni and Zhongqian Fu and Shuai Xiao and Cheng li and Thomas Tanay and Fenglong Song and Wentao Chao and Qiang Guo and Yan Liu and Jiang Li and Xiaochao Qu and Dewang Hou and Jiayu Yang and Lyn Jiang and Di You and Zhenyu Zhang and Chong Mou and Iaroslav Koshelev and Pavel Ostyakov and Andrey Somov and Jia Hao and Xueyi Zou and Shijie Zhao and Xiaopeng Sun and Yiting Liao and Yuanzhi Zhang and Qing Wang and Gen Zhan and Mengxi Guo and Junlin Li and Ming Lu and Zhan Ma and Pablo Navarrete Michelini and Hai Wang and Yiyun Chen and Jingyu Guo and Liliang Zhang and Wenming Yang and Sijung Kim and Syehoon Oh and Yucong Wang and Minjie Cai and Wei Hao and Kangdi Shi and Liangyan Li and Jun Chen and Wei Gao and Wang Liu and Xiaoyu Zhang and Linjie Zhou and Sixin Lin and Ru Wang},
journal= {arXiv preprint arXiv:2104.10781},
year = {2022}
}
Comments
Corrected the MOS values in Table 2, and corrected some minor typos