@Article{isprs-archives-XL-1-W1-275-2013,
AUTHOR = {Oliveira, H. C. and Galo, M.},
TITLE = {OCCLUSION DETECTION BY HEIGHT GRADIENT FOR TRUE ORTHOPHOTO GENERATION, USING LIDAR DATA},
JOURNAL = {The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences},
VOLUME = {XL-1/W1},
YEAR = {2013},
PAGES = {275--280},
URL = {https://isprs-archives.copernicus.org/articles/XL-1-W1/275/2013/},
DOI = {10.5194/isprsarchives-XL-1-W1-275-2013}
}