Hand-held range sensor for 3-D surface measurement without surface markers and secondary tracking devices

用于 3D 表面测量的手持式测距传感器，无需表面标记和辅助跟踪设备

• 批准号: 349320-2007
• 负责人: Kofman, Jonathan
• 金额: $ 6.81万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=366257
• 关键词: Hand; held; range; sensor; surface

Three-dimensional (3-D) scanners or range sensors are commonly used to measure the surface shape of objects. They are typically capable of rapidly acquiring dense surface coordinate data without contacting the object surface. Applications include 3-D model archiving, reverse engineering, volume measurement, object shape comparison and inspection. Conventional scanners use mechanical devices such as arms or gantries to position the sensor head while scanning an object. However, positioning devices may be impossible to use where there is lack of space or a suitable supporting surface, such as for interior surfaces, confined spaces, complex shapes and immovable objects.This project aims to refine and test a new proprietary hand-held 3-D scanner that will enable measurement of surfaces without having to place markers on the object surface and without having to use secondary tracking systems to track the movement of the scanning sensor head. This will be an improvement over existing devices which have these limitations, and will allow fully non-contacting measurement of a surface with a more free motion of the scanning head, and better access to surfaces with difficult accessibility. Specific applications include measurement of surfaces that cannot be touched such as delicate or fragile surfaces (archaeological sites and artefacts), non-firm surfaces (animal, human, plant), hazardous materials, surfaces in forensic applications, as well as those in poorly accessible disaster sites.

三维(3-D)扫描仪或距离传感器通常用于测量物体的表面形状。它们通常能够在不接触对象表面的情况下快速获取密集表面坐标数据。应用包括三维模型存档、逆向工程、体积测量、物体形状比较和检查。传统扫描仪在扫描物体时使用机械装置，例如臂或机架来定位传感器头。然而，在缺乏空间或合适的支撑面的情况下，可能无法使用定位设备，例如内部表面、受限空间、复杂形状和不可移动的对象。该项目旨在改进和测试一种新的专有手持式三维扫描仪，该扫描仪将能够测量表面，而不必在对象表面放置标记，也不必使用辅助跟踪系统来跟踪扫描传感器头的运动。这将是对具有这些限制的现有设备的改进，并将允许以更自由的扫描头运动对表面进行完全非接触式测量，并更好地访问难以接近的表面。具体应用包括测量不能触摸的表面，如脆弱或脆弱的表面(考古遗址和文物)、非坚硬表面(动物、人类、植物)、危险材料、法医应用中的表面以及难以接近的受灾地点的表面。