@entry{com-mac-fre-ned-oli-21-aa-impsamp, author = {J Comba and A Maciel and C Freitas and L Nedel and MM Oliveira}, title = {Interactive Visualization at UFRGS}, journal = {}, volume = {}, number = {}, pages = {}, year = 2022, month = , doi = {}, comment = {}, abstract = {}, url = {{\url{http://www.decom.ufop.br/sibgrapi2012/eproceedings/wivis/00001.pdf}}}, quotes = {... First, seed points on the feature lines are placed by evaluating the inclusion form of the PV criterion with reduced affine arithmetic. Second, a feature flow field is derived from the higher-...} }