When Does a Camera See Rain?
Abstract
Rain produces sharp intensity fluctuations in images and videos, which degrade the performance of outdoor vision systems. These intensity fluctuations depend on various factors, such as the camera parameters, the properties of rain, and the brightness of the scene. We show that the properties of rain - its small drop size, high velocity, and low density - make its visibility strongly dependent on camera parameters such as exposure time and depth of field. We show that these parameters can be selected so as to reduce or even remove the effects of rain without altering the appearance of the scene. Conversely, the parameters of a camera can also be set to enhance the visual effects of rain. This can be used to develop an inexpensive and portable camera-based rain gauge that provides instantaneous rain rate measurements. The proposed methods serve to make vision algorithms more robust to rain without any necessity for post-processing. In addition, they can be used to control the visual effects of rain during the filming of movies
Cite
Text
Garg and Nayar. "When Does a Camera See Rain?." IEEE/CVF International Conference on Computer Vision, 2005. doi:10.1109/ICCV.2005.253Markdown
[Garg and Nayar. "When Does a Camera See Rain?." IEEE/CVF International Conference on Computer Vision, 2005.](https://mlanthology.org/iccv/2005/garg2005iccv-camera/) doi:10.1109/ICCV.2005.253BibTeX
@inproceedings{garg2005iccv-camera,
title = {{When Does a Camera See Rain?}},
author = {Garg, Kshitiz and Nayar, Shree K.},
booktitle = {IEEE/CVF International Conference on Computer Vision},
year = {2005},
pages = {1067-1074},
doi = {10.1109/ICCV.2005.253},
url = {https://mlanthology.org/iccv/2005/garg2005iccv-camera/}
}