Some Statistical Considerations on Window Width and Matching Stability of Images.

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Abstract

In stereo matching of images, sample cross-covariances are used commonly as a criterion for deciding whether matched points are truly conjugate. Hereupon window width is a serious parameters to dominate matching stability. This paper argues about relation of matching stability with window width in terms of statistical behavior of sample covariances. For simple circumstances of analysis auto-covariances of a single image are considered instead of cross-covariances of stereo ones. First the mean and variance of sample auto-covariances are derived with parameters, window width and positional lag. Secondly they are evaluated from the correlation function estimated on an aerial image under the assumption of ergodicity to observe how they vary according as two parameters vary. From this result a variation factor is proved usefull to estimate appropriate window width.

Journal

  • Memoirs of the School of Engineering, Okayama University

    Memoirs of the School of Engineering, Okayama University 18(1), 101-110, 1984-03-30

    岡山大学工学部

Codes

  • NII Article ID (NAID)
    120002307207
  • NII NACSIS-CAT ID (NCID)
    AA00733903
  • Text Lang
    ENG
  • Article Type
    departmental bulletin paper
  • ISSN
    0475-0071
  • Data Source
    IR 
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