NTIRE 2024 Challenge on Stereo Image Super-Resolution: Methods and Results

TL;DR

The NTIRE 2024 stereo image super-resolution challenge evaluates methods to enhance low-resolution stereo pairs to high-resolution with a focus on exploiting viewpoint information and stereo consistency, establishing new benchmarks.

Contribution

This paper introduces the third NTIRE stereo SR challenge, highlighting new solutions, results, and benchmarks for super-resolving stereo images with a focus on real-world degradations.

Findings

High participation with 108 and 70 teams in two tracks.

Multiple teams achieved PSNR scores surpassing baseline.

The challenge sets new standards for stereo image super-resolution.

Abstract

This paper summarizes the 3rd NTIRE challenge on stereo image super-resolution (SR) with a focus on new solutions and results. The task of this challenge is to super-resolve a low-resolution stereo image pair to a high-resolution one with a magnification factor of x4 under a limited computational budget. Compared with single image SR, the major challenge of this challenge lies in how to exploit additional information in another viewpoint and how to maintain stereo consistency in the results. This challenge has 2 tracks, including one track on bicubic degradation and one track on real degradations. In total, 108 and 70 participants were successfully registered for each track, respectively. In the test phase, 14 and 13 teams successfully submitted valid results with PSNR (RGB) scores better than the baseline. This challenge establishes a new benchmark for stereo image SR.