Method for recognizing image scale invariant pattern under noise condition
A scale-invariant, pattern recognition technology, applied in the field of detection, recognition of objects of different scales, and image processing, which can solve problems such as sensitivity to background noise, limited detection performance, and unstable influence of correlation peaks.
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[0026] The present invention will be described in more detail below in conjunction with the drawings:
[0027] This method includes two separate stages: (1) training to obtain a correlation filter for a specific object image (reference image); (2) using the obtained correlation filter to recognize the object to be inspected.
[0028] Such as figure 1 , The training phase includes the following steps:
[0029] 1) Use the bidimensional empirical mode decomposition (BEMD) technology to decompose a specific object f(x, y) (usually called a reference image) to obtain the eigenmode function F of each layer of the object i (intrinsicmode functions: IMF) and residual component R;
[0030] f = X i = 1 n ( F i ) + R
[0031] 2) The first layer IMF (high frequency component) F 1 , Perform Merlin radial harmonic decomposition to obtain radial harmonic component;
[0032] f m ( θ ; x 0 , y 0 ) = L - 1 ∫ r 0 R...
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