基于自适应条纹投影的面结构光高反表面三维测量方法

By using an adaptive fringe projection method, combined with multimodal data and hierarchical region analysis, the problems of data loss and distortion in the 3D measurement of high-reflectivity objects were solved, and high-quality 3D point cloud reconstruction was achieved.

CN122408663APending Publication Date: 2026-07-17GUILIN MEASURING & CUTTING TOOLS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUILIN MEASURING & CUTTING TOOLS CO LTD
Filing Date
2026-04-23
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing structured light 3D measurement technology suffers from compromised measurement quality and integrity when dealing with objects with high reflectivity or drastic changes in surface reflectivity. Camera sensor saturation or low signal-to-noise ratio can lead to data loss and distortion.

Method used

An adaptive fringe projection method is adopted. By projecting in stages and acquiring deformed image sequences, a multimodal benchmark dataset is extracted, and dual-path analysis and region division are performed to generate a global projection light intensity adaptive mask. Combined with iterative optimization, complete 3D point cloud data is generated.

Benefits of technology

It enables precise perception and control of highly reflective surfaces, maintains the integrity of texture details, improves the robustness and accuracy of 3D reconstruction, and obtains 3D point cloud data with high integrity and high reliability.

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Abstract

本发明涉及光学三维测量技术领域,具体公开了基于自适应条纹投影的面结构光高反表面三维测量方法,包括:设置相机与投影仪并进行几何标定与光度标定,对被测物体进行分阶段投影并采集变形图像序列,计算并提取多模态基准数据集,并行执行双路分析流程,提取区域单元并进行规模类型与主导类型的划分,生成区域划分图谱,对区域单元提取子结构,采用基于子结构类型进行差异化设计的像素级调整策略,生成全局投影光强自适应掩膜,再次进行分阶段投影,评估掩膜处理效果是否合格,若不合格,进行动态迭代优化与评估,若合格或迭代结束,输出自适应变形图像序列作为应用变形图像序列,结合几何标定与光度标定,生成完整三维点云数据。
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