Optics and Precision Engineering, Volume. 20, Issue 12, 2804(2012)

Partially occluded object matching via multi-level description and evaluation of contour features

SHI Si-qi*... SHI Guang-ming and LI Fu |Show fewer author(s)
Author Affiliations
  • [in Chinese]
  • show less

    As traditional object matching algorithms can not match precisely a partially occuluded object, this paper proposes a novel partially occluded object matching algorithm based on the description and evaluation of contour features. Firstly, the contour fragments to describe the local object feature are obtained by splitting the object contour with contour curvature,and those contour fragments are merged and classified according to the object skeleton to describe the object features at multi-levels. Then, two evaluation parameters, importance and partiality, are defined for those contour fragments. The former evaluates the importance of the local feature, and the latter evaluates the proportion of contour fragment to the whole contour. Finally, the two evaluation parameters of contour fragment and the similarity between contour fragments are derived to obtain the weighted partial similarity to measure the matching degree of the partially occluded object reasonably and to obtain the optimal matching result. Compared with some current matching algorithms, the proposed algorithm improves the average recognition rate about 1.5% under various occluded cases.

    Tools

    Get Citation

    Copy Citation Text

    SHI Si-qi, SHI Guang-ming, LI Fu. Partially occluded object matching via multi-level description and evaluation of contour features[J]. Optics and Precision Engineering, 2012, 20(12): 2804

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category:

    Received: Jul. 29, 2012

    Accepted: --

    Published Online: Jan. 7, 2013

    The Author Email: Si-qi SHI (shisiqi@live.com)

    DOI:10.3788/ope.20122012.2804

    Topics