Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A PDE-based log-agnostic illumination correction algorithm   This report presents the results of a partial differential equation
(PDE)-based image enhancement algorithm, for dynamic range compression and
illumination correction in the absence of the logarithmic function. The
proposed algorithm combines forward and reverse flows in a PDE-based
formulation. The experimental results are compared with algorithms from the
literature and indicate comparable performance in most cases.

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The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: bayes-an
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: chao-dyn
2
The categories of this paper are: math
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The categories of this paper are: plasm-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
23
The categories of this paper are: solv-int