Image Processing Reference
In-Depth Information
(a)
(b)
(c)
FIGURE 6.16: Normal computation for an image SQUARE using digital
circles for different distance functions (a) {112}, (b) {1112}, and (c) {12}.
Reprinted from
Pattern Recognition Letters
, 23(2002), J. Mukherjee et al., Use of Medial axis Transforms for Com-
puting Normals at Boundary Points, 1649-1656, Copyright (2002), with permission from Elsevier.
(a)
(b)
(c)
FIGURE 6.17: Analytical normal maps: (a) for circle, (b) for rectangle, (c)
for square.
Reprinted from
Pattern Recognition Letters
, 23(2002), J. Mukherjee et al., Use of Medial Axis Transforms for Com-
puting Normals at Boundary Points, 1649-1656, Copyright (2002), with permission from Elsevier.
