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Improved robustness point registration method and system

A robust and registration technology, applied in image data processing, instrumentation, image generation, etc., can solve problems that affect the accuracy and robustness of algorithms and reduce registration accuracy, so as to improve robustness and improve The effect of accuracy

Pending Publication Date: 2021-03-09
常州码库数据科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When calculating the point neighbor relationship, the matching probability between all neighboring points is counted, which contains a lot of redundant information, which reduces the accuracy of registration.
The second type of method uses a simplified registration probability model, which affects the accuracy and robustness of the algorithm

Method used

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  • Improved robustness point registration method and system

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Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1: An improved robust point registration method, including: a. Given two point sets, and initializing the parameters of the registration model and assigning initial values; b. Based on the point local structure preservation theory, solving The prior probability of matching consistency between local point pairs in two point sets; c, further solve the posterior probability based on the mixed probability model and the prior probability obtained in step b; d, further solve the matching probability based on the posterior probability obtained in step c Deformation parameters of the quasi-model; e, rearranging the points in the two point sets based on the deformation parameters obtained in step d; f, repeating steps b-e until the registration model converges, and outputting the correspondence between the two point sets.

[0022] 1) Given two point sets, initialize the parameters of the registration model and assign initial values

[0023] Given two sets of points ...

Embodiment 2

[0069] Based on the improved robust point registration method described in Embodiment 1, this embodiment provides an improved robust point registration system, including: a first module, used to give two point sets, and The parameters of the registration model are initialized and assigned initial values; the second module is used to solve the prior probability of matching consistency between local point pairs in two point sets based on the theory of point local structure preservation; the third module is used to The probability model and the prior probability obtained in step b further solve the posterior probability; the fourth module is used to further solve the deformation parameters of the registration model based on the posterior probability obtained by the third module; the fifth module is used to further solve the deformation parameters based on the fourth module The obtained deformation parameters rearrange the points in the two point sets; the sixth module is used to o...

Embodiment 3

[0071] Based on the improved robust point registration method described in Embodiment 1, this embodiment provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, wherein, when the computer program is executed When running, the processor controls the device where the storage medium is located to execute the improved robust point registration method described in the first embodiment.

[0072] Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM,...

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Abstract

The invention discloses an improved robustness point registration method and system in the technical field of image registration, and the method and system maintain the corresponding consistency between local point sets while registering an overall point set, thus improving the accuracy of point set registration, and improving the robustness of an algorithm when there are abnormal points. The method comprises the following steps: a, giving two point sets, initializing registration model parameters, and assigning initial values; b, solving the prior probability of matching consistency between local point pairs in the two point sets based on a point local structure preserving theory; c, further solving a posterior probability based on the mixed probability model and the prior probability obtained in the step b; d, further solving deformation parameters of the registration model based on the posterior probability obtained in the step c; e, rearranging points in the two point sets based onthe deformation parameters obtained in the step d; and f, repeating the steps b-e until the registration model converges, and outputting a corresponding relationship between the two point sets.

Description

technical field [0001] The invention belongs to the technical field of image registration, and in particular relates to an improved robust point registration method and system. Background technique [0002] Image registration technology is a very important research topic in the field of computer vision and image processing. And many research results have been widely used in many important fields such as pattern recognition, medical image processing and digital media. According to the registration object, this technology can be roughly divided into gray-scale registration algorithm and point registration algorithm. Because the point registration algorithm can effectively reduce the complexity of the algorithm, has the advantage of real-time performance, and can be applied in practical industrial applications, it is currently a research hotspot in the industry. In recent years, a lot of relevant technical literature has been proposed, which can be divided into the following ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33G06T7/35G06K9/62
CPCG06T7/33G06T7/35G06T2207/10004G06T2210/44G06F18/24155
Inventor 冯全桑强
Owner 常州码库数据科技有限公司
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