Real-time pen-and-ink illustration of landscapes.

Liviu Coconu Oliver Deussen Hans-Christian Hege Real-time pen-and-ink illustration of landscapes. 27-35 2006 conf/npar/2006 NPAR http://doi.acm.org/10.1145/1124728.1124734 db/conf/npar/npar2006.html#CoconuDH06