Create a contour drawing, add line shading and learn exactly how MUCH line shading you actually like! If you’re a beginner when it comes to illustration and line shading with pen, this is the ...

Contour lines show the figure and its expression as well as outlining the bridge, the land, water and sky. There is no tone or shading so actual lines are also used to show the texture of the ...

In this version, contr_shade combines polygons with the same color before writing to the PostScript file. This yields compact output files. contr_lines.cpp - generates contour lines and labels with ...

The extraction of the object contour is done by comparing the actual pixel with the neighbors. We compare each immediate neighbor if the value is greather, smaller or different from the current one.