@article{freitas_reis_tommaselli_2017,  title={AUTOMATIC SHADOW DETECTION IN AERIAL AND TERRESTRIAL IMAGES},  volume={23},  ISSN={1982-2170},  url={https://doi.org/10.1590/S1982-21702017000400038},  DOI={10.1590/S1982-21702017000400038},  number={4},  journal={Boletim de Ciências Geodésicas},  publisher={Universidade Federal do Paraná},  author={Freitas, Vander Luis de Souza and Reis, Barbara Maximino da Fonseca and Tommaselli, Antonio Maria Garcia},  year={2017},  month={Oct},  pages={578–590} }