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首页> 外文期刊>Reports on Geodesy and Geoinformatics >MarQR technology for measuring relative displacements of building structure elements with regard to joints and cracks
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MarQR technology for measuring relative displacements of building structure elements with regard to joints and cracks

机译：MARQR技术，用于测量建筑结构元素关于关节和裂缝的相对位移

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The article presents an original optical system to measure displacements across joints or cracks in building structures. It describes the concept of system operation, algorithms to be followed and results of practical tests that have been performed. The proposed solution is based on digital photos taken with a non-metric digital camera, modified by defining its internal orientation elements and correction of lens distortion during calibration, constituting the measurement instrument registering the pictures of markers. QR (Quick Response) codes are proposed to be the markers. Being digitally processed, a set of registered images allow visualising the measured size of occurred displacements. Owing to this solution, it is possible to obtain data on a mutual position of two or more QR codes in the form of translation elements in 3D space and appropriate three orientation angles. Appointed elements are unequivocal in spatial interpretation and not limited by dimension. As the tests performed by the authors show, the results are more than satisfactory. The proposed measurement technology is an objective system of data acquisition, suitable for automating the whole monitoring process of displacements of building structure elements concerning joints and cracks.
机译：该物品呈现了原始光学系统，用于测量构建结构中的关节或裂缝的位移。它描述了系统操作的概念，遵循的算法以及已经执行的实际测试结果。所提出的解决方案基于用非公制数码相机拍摄的数字照片，通过定义其内部方向元件和校正校准期间的镜头失真来修改，构成记录标记图片的测量仪器。 QR（快速响应）代码被提出为标记。被数字处理，一组注册图像允许可视化发生的位移的测量大小。由于该解决方案，可以以3D空间中的翻译元件的形式获得关于两个或更多个QR码的相互位置的数据，以及适当的三个取向角度。被指定的元素在空间解释中毫不疑问，不受维度的限制。随着作者所表现出的测试，结果比令人满意。所提出的测量技术是数据采集的客观体系，适用于自动化构建结构元素的全部监测过程，了解关节和裂缝。

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