Total Variation Regularization of Matrix-Valued Images
2007 ◽
Vol 2007
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pp. 1-11
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Keyword(s):
We generalize the total variation restoration model, introduced by Rudin, Osher, and Fatemi in 1992, to matrix-valued data, in particular, to diffusion tensor images (DTIs). Our model is a natural extension of the color total variation model proposed by Blomgren and Chan in 1998. We treat the diffusion matrixDimplicitly as the productD=LLT, and work with the elements ofLas variables, instead of working directly on the elements ofD. This ensures positive definiteness of the tensor during the regularization flow, which is essential when regularizing DTI. We perform numerical experiments on both synthetical data and 3D human brain DTI, and measure the quantitative behavior of the proposed model.
2017 ◽
Vol 15
(02)
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pp. 1750009
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2018 ◽
Vol 2018
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pp. 1-13
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2014 ◽
Vol 2014
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pp. 1-11
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2019 ◽
Vol 2019
(13)
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pp. 147-1-147-8
Keyword(s):
2018 ◽
Vol 28
(2)
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pp. 1-10
Keyword(s):
2019 ◽
Vol 28
(8)
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pp. 3778-3793
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