线结构光双目融合补缺重建技术

Line Structured Light Binocular Fusion Filling and Reconstruction Technology

针对现有线结构光对复杂物体进行三维重建时存在信息缺失的问题,分析遮挡导致信息残缺的机理,定量分析线结构光系统参数和遮挡残缺之间的关系,提出一种长短基线结构光交叉补缺重建方法。基于双目线结构光硬件设备,构建了双目长基线和左右单目短基线3套不同基线的线结构光系统,对物体进行图像采集和三维重建。重建结果融合了双目、左目、右目图像的重建结果,实现了信息补缺,较好地改善了线结构光对具有复杂表面的物体进行三维重建时存在信息缺失的问题。实验结果显示,相比于传统双目线结构光,所提双目线结构光融合重建技术的重建缺失阈值从4.28 mm降低为2.14 mm,信息重建完整率从88%提升到92%,分别采集了充电器、盒子、开发板的三维数据,最高能够实现94%的信息重建。所提双目线结构光融合重建技术在不改变双目线结构光硬件设备的基础上,增加了信息采集完整度,拓宽了应用范围。

This study aimed to resolve the issue of information missing during the reconstruction of complex objects using existing line structured light.Herein,we have examined the mechanism of information incompleteness caused by occlusion along with the relationship between the parameters of the line structured light system and the occlusion incompleteness quantitatively.Furthermore,a new method for cross-complementary reconstruction of long and short baseline structured light is proposed.Based on the binocular line structured light hardware equipment,three sets of line structured light systems are created,which have a binocular long baseline and left and right monocular short baselines,conducting image acquisition and three-dimensional(3D)reconstruction of objects.The reconstruction result integrates the left-eye and righteye images and binocular reconstruction findings,accomplishing information filling and resolving the problem of information loss effectively while performing 3D reconstructions for objects with complex surfaces using line structured light.The experimental results demonstrate that compared with the traditional binocular structured light,the reconstruction missing threshold of the proposed binocular line structured light fusion reconstruction technology is reduced from 4.28 mm to 2.14 mm,the information reconstruction integrity rate is enhanced from 88%to 92%.And we collected objects such as chargers,boxes,and development boards,moreover,this study shows that up to 94%of the information can be rebuilt.Thus,the proposed binocular line structured light fusion reconstruction technology increases the integrity of information acquisition and expands the application range without altering the hardware of binocular line structured light.