Contrasting Shadow for Occluder Light Suppression from One-Shot Image
Abstract
Two main problems for front projection systems when a user appears between a screen and a projector are 1) shadows being cast on a screen and 2) the user being illuminated due to undesirable strong projection light. To solve these problems, it is necessary to know which projectors are occluded by a user and cast a shadow. We propose a method that suppresses occluder light from a single image based on the fact that the darkness of shadows on a screen is differentiated when projectors have different luminance. Contrary to previous approaches, our method utilizes different alpha masks for each projector to contrast shadows on a screen. This enables us to clarify the relationship between the shadow on a screen and the occluded projector. Additionally, by differentiating all projector luminances, our method makes it possible to discriminate shadows even when some shadow regions overlap on a screen. We implemented the proposed method into a three-projector system to demonstrate its effectiveness.
Cite
Text
Sugaya et al. "Contrasting Shadow for Occluder Light Suppression from One-Shot Image." IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops, 2010. doi:10.1109/CVPRW.2010.5544603Markdown
[Sugaya et al. "Contrasting Shadow for Occluder Light Suppression from One-Shot Image." IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops, 2010.](https://mlanthology.org/cvprw/2010/sugaya2010cvprw-contrasting/) doi:10.1109/CVPRW.2010.5544603BibTeX
@inproceedings{sugaya2010cvprw-contrasting,
title = {{Contrasting Shadow for Occluder Light Suppression from One-Shot Image}},
author = {Sugaya, Yoshiko and Miyagawa, Isao and Koike, Hideki},
booktitle = {IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops},
year = {2010},
pages = {96-103},
doi = {10.1109/CVPRW.2010.5544603},
url = {https://mlanthology.org/cvprw/2010/sugaya2010cvprw-contrasting/}
}