Herbert Freeman. Computer Processing of Line-Drawing Images. ACM Computing Surveys, 6(1):57-97, 1974.
@article{Freeman74,
title = {Computer Processing of Line-Drawing Images},
author = {Herbert Freeman},
year = {1974},
researchr = {https://researchr.org/publication/Freeman74},
cites = {0},
citedby = {0},
journal = {ACM Computing Surveys},
volume = {6},
number = {1},
pages = {57-97},
}