@Article{isprs-archives-XLII-2-W13-581-2019,
AUTHOR = {Schmitz, S. and Weinmann, M. and Ruf, B.},
TITLE = {AUTOMATIC CO-REGISTRATION OF AERIAL IMAGERY AND UNTEXTURED MODEL DATA UTILIZING AVERAGE SHADING GRADIENTS},
JOURNAL = {The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences},
VOLUME = {XLII-2/W13},
YEAR = {2019},
PAGES = {581--588},
URL = {https://isprs-archives.copernicus.org/articles/XLII-2-W13/581/2019/},
DOI = {10.5194/isprs-archives-XLII-2-W13-581-2019}
}