Christian Homeyer

dblp:312/4539 · DBLP profile ↗
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2ranked-venue papers
0as first author
2since 2021 · last 2023
0000-0002-0953-5162ORCID · corroborated

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 2 · 2 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Artificial intelligence
1 paper
3D vision · 100%
Computer graphics and multimedia
1 paper
Computational photography and imaging · 100%

Topics — the 2 heaviest of 2, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Computer vision › 3D vision › inverse rendering
outdoor lighting estimation
0.712023
Spatio-Temporal Outdoor Lighting Aggregation on Image Sequences Using Transformer Networks · Int. J. Comput. Vis. 2023
Computational photography and imaging
illumination estimation
0.712023
Spatio-Temporal Outdoor Lighting Aggregation on Image Sequences Using Transformer Networks · Int. J. Comput. Vis. 2023

Methods — techniques the papers use, named apart from their topics

transformer network · 1.3egomotion estimation · 1.3
YearPublicationVenuePosition
2023 Spatio-Temporal Outdoor Lighting Aggregation on Image Sequences Using Transformer Networks
abstract
Abstract In this work, we focus on outdoor lighting estimation by aggregating individual noisy estimates from images, exploiting the rich image information from wide-angle cameras and/or temporal image sequences. Photographs inherently encode information about the lighting of the scene in the form of shading and shadows. Recovering the lighting is an inverse rendering problem and as that ill-posed. Recent research based on deep neural networks has shown promising results for estimating light from a single image, but with shortcomings in robustness. We tackle this problem by combining lighting estimates from several image views sampled in the angular and temporal domains of an image sequence. For this task, we introduce a transformer architecture that is trained in an end-2-end fashion without any statistical post-processing as required by previous work. Thereby, we propose a positional encoding that takes into account camera alignment and ego-motion estimation to globally register the individual estimates when computing attention between visual words. We show that our method leads to improved lighting estimation while requiring fewer hyperparameters compared to the state of the art.
Haebom Lee, Christian Homeyer, Robert Herzog, Jan Rexilius, Carsten Rother
Int. J. Comput. Vis.2
2023 Correction: Spatio-Temporal Outdoor Lighting Aggregation on Image Sequences Using Transformer Networks
abstract
This erratum aims to correct errors in the sections 1, 3, and 5 of Lee et al. (2022).Some of the texts in these sections were reproduced in non-final form.It resulted in omissions of several major extensions that are made during the revision process.Figures and Tables are not affected.
Haebom Lee, Christian Homeyer, Robert Herzog, Jan Rexilius, Carsten Rother
Int. J. Comput. Vis.2