Mathematical Problems in Engineering

Research Article

A Numerical Method for Preserving Curve Edges in Nonlinear Anisotropic Smoothing

Figure 2

Smoothing results for the image (d) and the difference images between the relative smoothing images at their left and the original image (d) using different schemes.
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(a)
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(b) PM method results
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(c) Difference image
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(d) The image
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(e) Backward filter results
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(f) Difference image
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(g)
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(h) Coherence filter results
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(i) Difference image
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(j)
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(k) Proposed method results
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(l) Difference image