Multi-color LED illumination-based co-localization analysis multi-channel image automatic registration method and multi-color LED illumination-based co-localization analysis multi-channel image automatic registration system

By acquiring the driving current and structural jitter parameters of the multi-color LED lighting acquisition system, analyzing the offset components caused by spectral and mechanical motion, and performing nonlinear fitting and local search, the problem of image registration accuracy and efficiency in the multi-color LED lighting acquisition system is solved, and high-precision and high-robust automatic image registration is achieved.

CN122453883AActive Publication Date: 2026-07-24BEIJING JUEXIN BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610614467.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-07
Publication Date
2026-07-24
Estimated Expiration
2046-05-07

AI Technical Summary

Technical Problem

Existing multi-color LED lighting acquisition systems struggle to balance image registration accuracy and computational efficiency under complex conditions, resulting in problems such as blurred edges and false-color stripes in synthesized images.

Method used

By acquiring the driving current parameters of each illumination channel and the structural jitter parameters of the acquisition device during the facial image acquisition process, the dispersion displacement and structural offset components caused by spectral differences and mechanical motion are analyzed, nonlinear fitting is performed, and local search is conducted in conjunction with the phase correlation map to locate the sub-pixel offset coordinates and achieve high-precision registration.

Benefits of technology

It achieves high-precision and robust automatic registration in multi-color LED lighting acquisition scenarios with weak textures and significant spectral differences, improving the quality and reliability of co-localization analysis and multispectral imaging.

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Abstract

The invention provides a multi-color LED illumination-based co-localization analysis multi-channel image automatic registration method and system, and relates to the technical field of image processing, and the method comprises the steps: obtaining a driving current parameter corresponding to each illumination channel in a face image collection process and a structure jitter parameter of a collection device, and associating the driving current parameter and the structure jitter parameter as a face collection state parameter; analyzing a dispersion displacement component and a structure offset component through a preset model according to the face acquisition state parameters; carrying out nonlinear fitting on the two to determine an estimated registration deviation; determining a position fluctuation interval according to the fluctuation amplitude, and delimiting a local search area in the phase correlation diagram; positioning an intensity peak point in the local search area and extracting sub-pixel offset coordinates; and the sub-pixel offset coordinates are determined as the final registration offset, so that high-precision automatic registration of multi-channel images can be realized, and the reliability and efficiency of co-location analysis are remarkably improved.
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