@article{v008a019, author = {Felzenszwalb, Pedro F. and Huttenlocher, Daniel P.}, title = {Distance Transforms of Sampled Functions}, year = {2012}, pages = {415--428}, doi = {10.4086/toc.2012.v008a019}, publisher = {Theory of Computing}, journal = {Theory of Computing}, volume = {8}, number = {19}, URL = {https://theoryofcomputing.org/articles/v008a019}, }