Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Sparse Representation Based Joint Demosaicing Method for Single-Chip
  Polarized Color Sensor   The emergence of the single-chip polarized color sensor now allows for
simultaneously capturing chromatic and polarimetric information of the scene on
a monochromatic image plane. However, unlike the usual camera with an embedded
demosaicing method, the latest polarized color camera is not delivered with an
in-built demosaicing tool. For demosaicing, the users have to down-sample the
captured images or to use traditional interpolation techniques. Neither of them
can perform well since the polarization and color are interdependent.
Therefore, joint chromatic and polarimetric demosaicing is the key to obtaining
high-quality polarized color images. In this paper, we propose a joint
chromatic and polarimetric demosaicing model to address this challenging
problem. Instead of mechanically demosaicing for the multi-channel polarized
color image, we further present a sparse representation-based optimization
strategy that utilizes chromatic information and polarimetric information to
jointly optimize the model. To avoid the interaction between color and
polarization during demosaicing, we separately construct the corresponding
dictionaries. We also build an optical data acquisition system to collect a
dataset, which contains various sources of polarization, such as illumination,
reflectance and birefringence. Results of both qualitative and quantitative
experiments have shown that our method is capable of faithfully recovering full
RGB information of four polarization angles for each pixel from a single mosaic
input image. Moreover, the proposed method can perform well not only on the
synthetic data but the real captured data.

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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
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The categories of this paper are: alg-geom