3D Reconstruction with Single-Shot Structured Light RGB Line Pattern

Sensors

Zhenzhou Wang¹  Yikang Li¹ 

[1] College of Electrical and Electronic Engineering, Shandong University of Technology, Zibo 255000, China;

关键词: 3D reconstruction;    single shot;    slope difference distribution;    line indexing;    structured light;    phase map;   

DOI  :  10.3390/s21144819

来源: DOAJ

【 摘 要 】

Single-shot 3D reconstruction technique is very important for measuring moving and deforming objects. After many decades of study, a great number of interesting single-shot techniques have been proposed, yet the problem remains open. In this paper, a new approach is proposed to reconstruct deforming and moving objects with the structured light RGB line pattern. The structured light RGB line pattern is coded using parallel red, green, and blue lines with equal intervals to facilitate line segmentation and line indexing. A slope difference distribution (SDD)-based image segmentation method is proposed to segment the lines robustly in the HSV color space. A method of exclusion is proposed to index the red lines, the green lines, and the blue lines respectively and robustly. The indexed lines in different colors are fused to obtain a phase map for 3D depth calculation. The quantitative accuracies of measuring a calibration grid and a ball achieved by the proposed approach are 0.46 and 0.24 mm, respectively, which are significantly lower than those achieved by the compared state-of-the-art single-shot techniques.

【 授权许可】

Unknown