Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An extended Krylov subspace method for decoding edge-based compressed
  images by homogeneous diffusion   The heat equation is often used in order to inpaint dropped data in
inpainting-based lossy compression schemes. We propose an alternative way to
numerically solve the heat equation by an extended Krylov subspace method. The
method is very efficient with respect to the direct computation of the solution
of the heat equation at large times. And this is exactly what is needed for
decoding edge-compressed pictures by homogeneous diffusion.

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The categories of this paper are: q-alg
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
12
The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: eess
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: cmp-lg