Sparse and dense characteristic matching combined image registration method
A dense feature, image registration technology, applied in the field of image processing, can solve problems such as unsatisfactory results
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[0051] The present invention will be further described below in conjunction with embodiment.
[0052] The invention provides an image registration method combining sparse and dense feature matching, comprising the following steps:
[0053] (1) Establish a sparse feature matching energy function based on local linear constraints:
[0054] (1-1) Using the feature detection method to infer the hypothetical matching set of the two images to be registered x n with y n Two-bit column vectors representing the spatial positions of the feature points in the two images to be registered respectively; the hypothetical matching set S includes wrong matching and correct matching, wherein the correct matching is determined according to the geometric transformation Z between the two images with matching , that is, if (x n ,y n ) is a correct match, then y n =Z(x n ) is a correct match;
[0055] (1-2) The initial position plus a displacement function v will define a transformation Z: ...
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