@inproceedings{inproceedingsea8e0cb1,
title   = {Low pass convolution filters as a tool for tonal image enhancing},
author = {Branco, Fábio Cardinale and Almeida, Teodoro Isnard Ribeiro de},
year = {2000},
publisher = {CPRM},
booktitle   = {Interantional Geological Congress}
}