用近距摄影实现亚毫米级3D建模，适合实验室结构测试
Assessment of Submillimeter Precision via Structure from Motion Technique in Close-Range Capture Environments
- 结合标定板与分布合理的尺度棒，优化图像重叠率与视角
- 在1米距离下达到约0.1毫米的均方根误差
- 适合对精度要求高的实验室结构测试场景
通过结构从运动（SfM）技术构建3D模型是一种被广泛认可、高效且低成本的结构监测方法，常用于从数十米外拍摄的照片重建大型结构。然而，关于其在实验室环境下进行结构测试时的可用性及分析流程的研究较少。本研究评估了SfM在近距离捕获条件下生成亚毫米级模型的潜力。实验在1米距离下进行，考察了相机标定模型、尺度棒分布、图像重叠率以及垂直与倾斜影像结合的影响。采用测试板上的标定模型、合理分布的尺度棒（SB）、80%的重叠率，并融合垂直与倾斜影像，最终获得约0.1毫米的均方根误差（RMSE）。结果表明，该技术可满足实验室结构测试对亚毫米级位置精度的需求。
原文摘要 · Abstract (English)
Creating 3D models through the Structure from Motion technique is a recognized, efficient, cost-effective structural monitoring strategy. This technique is applied in several engineering fields, particularly for creating models of large structures from photographs taken a few tens of meters away. However, discussions about its usability and the procedures for conducting laboratory analysis, such as structural tests, are rarely addressed. This study investigates the potential of the SfM method to create submillimeter-quality models for structural tests, with short-distance captures. A series of experiments was carried out, with photographic captures at a 1-meter distance, using different quality settings: camera calibration model, Scale Bars dispersion, overlapping rates, and the use of vertical and oblique images. Employing a calibration model with images taken over a test board and a set of Scale Bars (SB) appropriately distributed over the test area, an overlap rate of 80 percent, and the integration of vertical and oblique images, RMSE values of approximately 0.1 mm were obtained. This result indicates the potential application of the technique for 3D modeling with submillimeter positional quality, as required for structural tests in laboratory environments.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。