Abstract: In computer-aided design systems, the most critical step when analyzing the geometric structure of a part from a two-dimensional raster drawing is to extract the contour lines of the part.

contour drawing - shows outlines, shapes and edges but not fine detail, texture, tone or colour cross contour drawing - uses lines drawn across surfaces to suggest their depth and form tonal study - ...

Abstract: This paper presents an efficient global optimization approach to the problem of constrained contour energy minimization for the object boundary extraction. In the method, with a given ...