• Optics and Precision Engineering
  • Vol. 20, Issue 10, 2293 (2012)
YANG Jian1,2,3,*, HAN Jian-dong1,2,3, and QIN Ping-le1,2,3
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    DOI: 10.3788/ope.20122010.2293 Cite this Article
    YANG Jian, HAN Jian-dong, QIN Ping-le. Correcting error on recognition of coded points for photogrammetry[J]. Optics and Precision Engineering, 2012, 20(10): 2293 Copy Citation Text show less

    Abstract

    As the mistakes of detecting ellipse points can cause the three-dimensional data matching error, even the measuring task failure in a photogrammetric task,this paper proposes a new correcting scheme for error coded points. The scheme uses the channel code of information theory to design the code points, then divides the codes into information and verification elements based on the linear block codes, so that the generator matrix and the parity-check matrix are implemented. When errors happened, an adjoint matrix is used to correct the mistake. Finally, an encoding is performed to realize the three dimensional match. The proposed method improves the anti-noise property of code points greatly, and has good practical values and wide application prospects. Experiments show that the method is feasible completely and easy to identify. When one code point is wrong, the correctness probability is 100%.
    YANG Jian, HAN Jian-dong, QIN Ping-le. Correcting error on recognition of coded points for photogrammetry[J]. Optics and Precision Engineering, 2012, 20(10): 2293
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