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P. Kán, H. Kaufmann:
"DeepLight: light source estimation for augmented reality using deep learning";
Visual Computer, 35 (2019), 6; S. 873 - 883.

This paper presents a novel method for illumination estimation from RGB-D images. The main focus of the proposed method is to enhance visual coherence in augmented reality applications by providing accurate and temporally coherent estimates of real illumination. For this purpose, we designed and trained a deep neural network which calculates a dominant light direction from a single RGB-D image. Additionally, we propose a novel method for real-time outlier detection to achieve temporally coherent estimates. Our method for light source estimation in augmented reality was evaluated on the set of real scenes. Our results demonstrate that the neural network can successfully estimate light sources even in scenes which were not seen by the network during training. Moreover, we compared our results with illumination estimates calculated by the state-of-the-art method for illumination estimation. Finally, we demonstrate the applicability of our method on numerous augmented reality scenes.

Light source estimation, Augmented realit,y Photometric registration, Deep learning

http://dx.doi.org/10.1007/s00371-019-01666-x

https://link.springer.com/content/pdf/10.1007%2Fs00371-019-01666-x.pdf