Directional local extrema patterns: a new descriptor for content based image retrieval

@article{Murala2012DirectionalLE,
  title={Directional local extrema patterns: a new descriptor for content based image retrieval},
  author={Subrahmanyam Murala and R. P. Maheshwari and R. Balasubramanian},
  journal={International Journal of Multimedia Information Retrieval},
  year={2012},
  volume={1},
  pages={191-203}
}
In this paper, a new algorithm using directional local extrema patterns meant for content-based image retrieval application is proposed. The standard local binary pattern (LBP) encodes the relationship between reference pixel and its surrounding neighbors by comparing gray-level values. The proposed method differs from the existing LBP in a manner that it extracts the directional edge information based on local extrema in 0 $$^{\circ }$$ , 45 $$^{\circ }$$ , 90 $$^{\circ }$$ , and 135 $$^{\circ… CONTINUE READING
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