This paper builds on the principles of depicting transparency in hand-made line drawings, and develops a method to generate similar, but computer-generated, line drawings in a two-step process. In the first step, a brightness image is generated, which is used as a basis for the line drawing created in the second step. Three different methods derived from traditional drawing techniques are shown.
['Jörg Hamel', 'Stefan Schlechtweg', 'Thomas Strothotte']
An approach to visualizing transparency in computer-generated line drawings