To date, the main measurement technologies include Total Station System (TPS), Global Positioning System (GPS), digital photogrammetry, and laser scanning/tracking. Many specialised applications (e.g. engineering, industrial, medical, etc) require precise dimensional measurement and three dimensional (3D) computer models of the real objects. The required precisions range from micron to cm. This paper describes some of the research works (at the Department of Geomatic Engineering, Universiti Teknologi Malaysia (UTM)) related to precise non-contact measurement and 3D computer modeling of objects for medical and industrial applications, using laser scanning and close range digital photogrammetric measurement techniques. Several tests were performed, and some results were verified with Coordinate Measuring Machine (CMM), indicating precision of mm-level or better. The outcome from this research shows the practicality of the approach for many high precision applications.
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机译：迄今为止，主要测量技术包括全站仪系统（TPS），全球定位系统（GPS），数码摄影测量和激光扫描/跟踪。许多专业应用（例如，工业，工业，医疗等）需要精确的尺寸测量和真实物体的三维（3D）计算机模型。所需的精确范围从微米到cm。本文介绍了一些研究作品（在Geomatic Engineering，Universiti Teknologi Malaysia（UTM））使用激光扫描和近距离数码摄影测量的精确的非接触式测量和3D计算机建模，与医疗和工业应用的对象有关。测量技术。进行了几次测试，并通过坐标测量机（CMM）来验证一些结果，指示MM级的精度或更好。本研究的结果显示了许多高精度应用的方法的实用性。
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