A Pixel-Wise Varifocal Camera Model for Efficient Forward Projection and Linear Extrinsic Calibration of Underwater Cameras with Flat Housings
Abstract
This paper is aimed at presenting a new virtual camera model which can efficiently model refraction through flat housings in underwater photography. The key idea is to em-ploy a pixel-wise virtual focal length concept to encode the refractive projection inside the flat housing. The radially-symmetric structure of the varifocal length around the nor-mal of the housing surface allows us to encode the refractive projection with a compact representation. We show that this model realizes an efficient forward projection computation and a linear extrinsic calibration in water. Evaluations us-ing synthesized and real data demonstrate the performance quantitatively and qualitatively. 1.
Cite
Text
Kawahara et al. "A Pixel-Wise Varifocal Camera Model for Efficient Forward Projection and Linear Extrinsic Calibration of Underwater Cameras with Flat Housings." IEEE/CVF International Conference on Computer Vision Workshops, 2013. doi:10.1109/ICCVW.2013.112Markdown
[Kawahara et al. "A Pixel-Wise Varifocal Camera Model for Efficient Forward Projection and Linear Extrinsic Calibration of Underwater Cameras with Flat Housings." IEEE/CVF International Conference on Computer Vision Workshops, 2013.](https://mlanthology.org/iccvw/2013/kawahara2013iccvw-pixelwise/) doi:10.1109/ICCVW.2013.112BibTeX
@inproceedings{kawahara2013iccvw-pixelwise,
title = {{A Pixel-Wise Varifocal Camera Model for Efficient Forward Projection and Linear Extrinsic Calibration of Underwater Cameras with Flat Housings}},
author = {Kawahara, Ryo and Nobuhara, Shohei and Matsuyama, Takashi},
booktitle = {IEEE/CVF International Conference on Computer Vision Workshops},
year = {2013},
pages = {819-824},
doi = {10.1109/ICCVW.2013.112},
url = {https://mlanthology.org/iccvw/2013/kawahara2013iccvw-pixelwise/}
}