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<p>"T" denotes <a href="page.php?w=transpose">transpose</a>, in which in image filtering D(?, <b>r</b>) are symmetric matrices constructed from the <a href="page.php?w=eigenvectors">eigenvectors</a> of the image <a href="page.php?w=structure_tensor">structure tensor</a>s. The spatial derivatives can then be approximated by two first order and a second order central <a href="page.php?w=finite_difference">finite difference</a>s. The resulting diffusion algorithm can be written as an image <a href="page.php?w=convolution">convolution</a> with a varying</p><p>
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