基于多波长偏振线结构光的目标增强三维重建方法

By calculating the degree of linear polarization using multi-band light sources and polarization imaging technology, the problems of monochromaticity of laser light sources and insufficient intensity of multi-band light sources are solved, achieving high-precision three-dimensional reconstruction and improving the robustness of measurement and target extraction effect.

CN122156499BActive Publication Date: 2026-07-17JIANGXI UNIV OF SCI & TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGXI UNIV OF SCI & TECH
Filing Date
2026-05-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing technologies, the monochromaticity of laser light sources limits the acquisition of complete surface features, while the insufficient intensity contrast of multi-band light sources can easily lead to measurement ambiguity, resulting in inaccurate 3D reconstruction.

Method used

By employing multi-band light sources combined with polarization imaging technology, surface features are obtained by calculating the degree of linear polarization. Utilizing the incident angle and surface properties, independent of the light source intensity, and combining the intrinsic relationship between wavelength and polarization, the absolute roughness of the object is estimated and incorporated into the three-dimensional reconstruction process.

Benefits of technology

It improves the robustness and contrast of measurements, corrects systematic errors caused by multi-wavelength inconsistency, enhances target extraction, and maintains high-precision 3D reconstruction capabilities.

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Abstract

本发明提供了基于多波长偏振线结构光的目标增强三维重建方法。该方法引入了偏振成像技术,该技术依赖于入射角和表面属性,与光源强度无关,解决了多波段光源因光源强度对比度不足导致的测量歧义问题;此外,为缓解宽带照明下不同波长响应不一致的问题,采用线偏振度作为观测基准;然后通过解耦入射角与材料响应,并利用波长与偏振的内在关联,实现物体均方根绝对粗糙度的估计;最终,将估计的绝对粗糙度特征为关键字融入三维重建过程,以增强目标提取效果。
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