One-day outdoor photometric stereo via skylight estimation

@article{Jung2015OnedayOP,
  title={One-day outdoor photometric stereo via skylight estimation},
  author={Jiyoung Jung and Joon-Young Lee and In-So Kweon},
  journal={2015 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)},
  year={2015},
  pages={4521-4529}
}
We present an outdoor photometric stereo method using images captured in a single day. We simulate a sky hemisphere for each image according to its GPS and timestamp, and parameterize the obtained sky hemisphere into a quadratic skylight and a Gaussian sunlight distribution. Unlike previous works which usually model outdoor illumination as a sum of constant ambient light and a distant point light, our method models natural illumination according to a popular sky model and thus provides… CONTINUE READING