Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anisotropic Diffusion in ITK   Anisotropic Non-Linear Diffusion is a powerful image processing technique,
which allows to simultaneously remove the noise and enhance sharp features in
two or three dimensional images. Anisotropic Diffusion is understood here in
the sense of Weickert, meaning that diffusion tensors are anisotropic and
reflect the local orientation of image features. This is in contrast with the
non-linear diffusion filter of Perona and Malik, which only involves scalar
diffusion coefficients, in other words isotropic diffusion tensors. In this
paper, we present an anisotropic non-linear diffusion technique we implemented
in ITK. This technique is based on a recent adaptive scheme making the
diffusion stable and requiring limited numerical resources. (See supplementary
data.)

12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
18
The categories of this paper are: econ
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
20
The categories of this paper are: acc-phys
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn