NTIRE 2024 Challenge on Image Super-Resolution ($\times$4): Methods and
  Results
Zheng Chen Zongwei Wu Eduard Zamfir Kai Zhang Yulun Zhang Radu Timofte Xiaokang Yang Hongyuan Yu Cheng Wan Yuxin Hong Zhijuan Huang Yajun Zou Yuan Huang Jiamin Lin Bingnan Han Xianyu Guan Yongsheng Yu Daoan Zhang Xuanwu Yin Kunlong Zuo Jinhua Hao Kai Zhao Kun Yuan Ming Sun Chao Zhou Hongyu An Xinfeng Zhang Zhiyuan Song Ziyue Dong Qing Zhao Xiaogang Xu Pengxu Wei Zhi-chao Dou Gui-ling Wang Chih-Chung Hsu Chia-Ming Lee Yi-Shiuan Chou Cansu Korkmaz A. Murat Tekalp Yubin Wei Xiaole Yan Binren Li Haonan Chen Siqi Zhang Sihan Chen Amogh Joshi Nikhil Akalwadi Sampada Malagi Palani Yashaswini Chaitra Desai Ramesh Ashok Tabib Ujwala Patil Uma Mudenagudi Anjali Sarvaiya Pooja Choksy Jagrit Joshi Shubh Kawa Kishor Upla Sushrut Patwardhan Raghavendra Ramachandra Sadat Hossain Geongi Park S. M. Nadim Uddin Hao Xu Yanhui Guo Aman Urumbekov Xingzhuo Yan Wei Hao Minghan Fu Isaac Orais Samuel Smith Ying Liu Wangwang Jia Qisheng Xu Kele Xu Weijun Yuan Zhan Li Wenqin Kuang Ruijin Guan Ruting Deng Zhao Zhang Bo Wang Suiyi Zhao Yan Luo Yanyan Wei Asif Hussain Khan Christian Micheloni Niki Martinel
This paper reviews the NTIRE 2024 challenge on image super-resolution
($\times$4), highlighting the solutions proposed and the outcomes obtained. The
challenge involves generating corresponding high-resolution (HR) images,
magnified by a factor of four, from low-resolution (LR) inputs using prior
information. The LR images originate from bicubic downsampling degradation. The
aim of the challenge is to obtain designs/solutions with the most advanced SR
performance, with no constraints on computational resources (e.g., model size
and FLOPs) or training data. The track of this challenge assesses performance
with the PSNR metric on the DIV2K testing dataset. The competition attracted
199 registrants, with 20 teams submitting valid entries. This collective
endeavour not only pushes the boundaries of performance in single-image SR but
also offers a comprehensive overview of current trends in this field.