Image segmentation method based on non-subsampling shearlet transform and vector c-v model
A non-subsampling, image segmentation technology, applied in the field of image processing to achieve strong directional effects
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[0036] Follow the steps below:
[0037] The Shearlet transform uses the downsampling operator in the multi-resolution representation process, so it will lose the spatial support, imitate the non-subsampled contourlet transform (Nonsubsampled Contourlet Transform, NSCT) construction method, and use the non-subsampled Laplacian pyramid algorithm Instead of the Laplacian pyramid algorithm, a Nonsubsampled Shearlet Transform (NSST) is constructed.
[0038] Define the C-V energy functional form as follows,
[0039] (1)
[0040] in H is the Heaviside function, defined as follows:
[0041]
[0042] Its distribution derivative is ;
[0043] for fixed and minimize about The function ,
[0044]
[0045] The Euler-Lagrange equation governing the mean curvature and the error term can be obtained by using the steepest downflow method ;
[0046] The vector C-V model has the following definition:
[0047]
[0048] in yes in the image etc. layer channel,...
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