Journal of Signal Processing
Online ISSN : 1880-1013
Print ISSN : 1342-6230
ISSN-L : 1342-6230
Improved Colorization Algorithm Using Lp Norm Minimization
Kazunori Uruma, Tomohiro Takahashi, Katsumi Konishi, Toshihiro Furukawa
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2015 Volume 19 Issue 4 Pages 155-158

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Abstract

We propose an algorithm to improve the colorization algorithm using the Lp-norm minimization approach. The proposed algorithm minimizes the Lp-norm of differences between neighboring pixels of a given luminance image to appropriately colorize a chrominance image. Since the Lp-norm minimization problem is difficult to solve, we apply the iterative reweighted least squares (IRLS) algorithm. Numerical examples show the effectiveness of the proposed method.

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© 2015 Research Institute of Signal Processing, Japan
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