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Construction of Affine Invariant Functions in Spatial Domain

机译:空间域仿射不变函数的构造

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摘要

Affine invariant functions are constructed in spatial domain. Unlike the previous affine representation functions in transform domain, these functions are constructed directly on the object contour without any transformation. To eliminate the effect of the choice of points on the contour, an affine invariant function using seven points on the contour is constructed. For objects with several separable components, a closed curve is derived to construct the affine invariant functions. Several experiments have been conducted to evaluate the performance of the proposed method. Experimental results show that the constructed affine invariant functions can be used for object classification.
机译:仿射不变函数在空间域中构建。与以前在变换域中的仿射表示功能不同,这些功能无需任何变换即可直接在对象轮廓上构建。为了消除轮廓上选择点的影响,构造了使用轮廓上的七个点的仿射不变函数。对于具有多个可分离分量的对象,导出一条闭合曲线以构造仿射不变函数。已经进行了一些实验,以评估该方法的性能。实验结果表明,所构造的仿射不变函数可用于对象分类。

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  • 来源
    《Mathematical Problems in Engineering》 |2012年第5期|p.36.1-36.11|共11页
  • 作者单位

    School of Mathematics and Statistics, Nanjing University of Information Science and Technology, Nanjing 210044, China;

    School of Mathematics and Statistics, Nanjing University of Information Science and Technology, Nanjing 210044, China;

    Department of Mathematics G. Castelnitovo, University of Rome la Sapienza, Piazzale,Aldo Mom 2,00185 Rome, Italy;

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