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Mathematical Problems in Engineering
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Mathematical Problems in Engineering
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2011
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Article
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Fig 2
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Research Article
Enclosed Laplacian Operator of Nonlinear Anisotropic Diffusion to Preserve Singularities and Delete Isolated Points in Image Smoothing
Figure 2
The test image, diffusion points and difference images between the test image and the smoothing images for different methods.
(a)
The test image
(b)
The test image with pink test points
(c)
The labeled pink test points
(d)
The first- to the fourth-scale diffusion points for ELONAD
(e)
The first- to the fourth-scale diffusion points for PM method [
18
]
(f)
The first- to the fourth-scale diffusion points for shock filter [
20
]
(g)
The first- to the fourth-scale diffusion points for coherence filter [
21
]
(h)
The difference image for ELONAD
(i)
The difference image for PM method [
18
]
(j)
The difference image for shock filter [
20
]
(k)
The difference image for coherence filter [
21
]