TL;DR
The NTIRE 2021 depth guided image relighting challenge focused on transforming scene illumination using depth information, with two tracks: one-to-one relighting and any-to-any style transfer, involving nearly 250 participants.
Contribution
This paper reviews the challenge, presents the methods used, and reports the results, advancing the field of image relighting with depth guidance and multiple task settings.
Findings
High participant engagement with 250 registered teams.
Successful development of methods for both relighting tracks.
Demonstrated effectiveness of depth information in relighting tasks.
Abstract
Image relighting is attracting increasing interest due to its various applications. From a research perspective, image relighting can be exploited to conduct both image normalization for domain adaptation, and also for data augmentation. It also has multiple direct uses for photo montage and aesthetic enhancement. In this paper, we review the NTIRE 2021 depth guided image relighting challenge. We rely on the VIDIT dataset for each of our two challenge tracks, including depth information. The first track is on one-to-one relighting where the goal is to transform the illumination setup of an input image (color temperature and light source position) to the target illumination setup. In the second track, the any-to-any relighting challenge, the objective is to transform the illumination settings of the input image to match those of another guide image, similar to style transfer. In both…
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