Automatic detection and analysis of discontinuity geometry of rock mass from digital images
Automatic detection and analysis of discontinuity geometry of rock mass from digital images
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DOI：
10.1016/j.cageo.2007.03.007
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发表时间：
2008-02-01
影响因子：
4.4
通讯作者：
Ryu, Chang-Ha
中科院分区：
文献类型：
--
作者：
Deb, D.;Hariharan, S.;Ryu, Chang-Ha
岩石暴露的不可接近性是岩土工程数据采集中的一个固有问题，它影响了有效的岩土工程评价。数字图像处理方法是允许快速、完整和准确地获取信息的工具。利用摄影测量中的数字图像，本研究分析了岩体暴露的不连续几何形状。研究表明：（a）该变换函数适用于无透视误差的图像;（B）所开发的系统通用性强，既能检测直线，也能检测多直线形式的曲线;（c）Hough变换算法对含有大量噪声的多节理岩体有很好的效果;和（d）可以自动地对小波束进行分类。作者推荐数字面映射方法来表征岩体，因为它减少了在现场花费的时间，从而保持数据的完整性。此外，这种技术允许系统的映射和建立一个永久的和巨大的数据库，岩体特性。(c)2007爱思唯尔有限公司保留所有权利。
The inaccessibility of rock exposures is an inherent problem in geotechnical data acquisition that compromises effective geotechnical evaluation. The digital image processing method is a tool that permits a fast, complete, and accurate acquisition of information. Using digital images in photogrammetry, the present study analyzes the discontinuity geometry of rock mass exposures. The study has demonstrated that (a) the transformation function is appropriate for images without any perspective error; (b) the developed system is versatile and can detect both lines as well as curves in multilinear form; (c) the Hough transform algorithm can provide excellent results for rock mass with multiple joint sets having considerable amount of noise; and (d) the beamlets can be classified in an automated manner.The authors recommend the digital face mapping method to characterize rock masses, as it reduces the time spent in the field, thus preserving data integrity. Furthermore, this technique allows for systematic mapping and the building of a permanent and huge database for rock mass characterization. (c) 2007 Elsevier Ltd. All rights reserved.