May 2015
Intermediate to advanced
246 pages
6h 33m
English
book
A Sampler of Useful Computational Tools for Applied Geometry, Computer Graphics, and Image Processing
by Daniel Cohen-Or, Chen Greif, Tao Ju, Niloy J. Mitra, Ariel Shamir, Olga Sorkine-Hornung, Hao Zhang
Content preview from A Sampler of Useful Computational Tools for Applied Geometry, Computer Graphics, and Image Processing
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Graphs and Images 187
F
B
F
B
t-links
n-links
pixel nodes
terminal
nodes
F
B
background
cut
foreground
Figure 12.8: The graph created from an image for segmenting before
(left) and after (right) the graph cut.
energy function E(L) allows us to look for the minimum cut that
separates the two terminal nodes. This cut also minimizes the en-
ergy function E(L) and provides a global optimum for our original
foreground–background separation problem.
The t-links’ weights are inversely proportional to the data term.
Every terminal represents the color model of the background or
foreground. The more similar a pixel’s color is to the terminal’s
color model, the ...
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