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案件现场的三维测量是现场勘查工作的重要组成部分,为克服当前实战单位主要采用皮尺、红外测距等测量手段引起的主观性强、现场二次污染、溯源性不高等问题,本文引入近景摄影测量技术,利用非量测数码相机实现案件现场的三维测量。文中阐述了近景摄影测量的原理,近景摄影测量软件iWitness的使用方法,并通过模拟案例及误差分析证实了该技术方法的有效可行。
In order to overcome the subjectivity, field secondary pollution and low traceability caused by the measurement methods such as tape measure and infrared distance measurement, the three-dimensional survey of the scene is an important part of on-the-spot investigation. Measurement technology, the use of non-digital cameras to achieve three-dimensional scene measurement. The principle of close-range photogrammetry and the using method of close-range photogrammetry software iWitness are expounded in this paper. The simulation results and error analysis prove that the method is effective and feasible.