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Data-driven techniques for smoothing histograms of local binary patterns
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DOI：10.1016/j.patcog.2016.06.029.png)
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摘要
En 中文
Local binary pattern histograms have proved very successful texture descriptors. Despite this success, the description procedure bears some drawbacks that are still lacking solutions in the literature. One of the problems arises when the number of extractable local patterns reduces while their dimension increases rendering the output histogram descriptions sparse and unstable, finally showing up as a reduced recognition rate. A smoothing method based on kernel density estimation was recently proposed as a means to tackle the aforementioned problem. A constituent part of the method is to determine how much to smooth a histogram. Previously, this was solved via trial-and-error in a problem-specific manner. In this paper, the goal is to present data-driven methods to determine this smoothing automatically. In the end, we present unsupervised and supervised methods for the given task and validate their performance with a representative set of local binary pattern variants in texture analysis problems covering material categorization and face recognition. (C) 2016 Elsevier Ltd. All rights reserved.
Keyword:
Local binary patterns
Local binarized descriptors
Histogram
Soft-assignment
Kernel density estimation
Histogram smoothing
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期刊
IF:
7.6
论文数:
1.3W
被引数:
4.5W
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