Abstract
This study introduces the efficiency of using prototype digital photogrammetry for measuring the roughness of rock surfaces, employing digital stereo images obtained from a high resolution Kodak DCS 420 non-metric digital camera and a Rolleiflex 6006 metric film camera. To measure the surface roughness of test objects in the case of non-topographic applications, reference surfaces are mathematically estimated using the least squares method. The roughness processing capability of a digital camera and a metric film camera is evaluated using an arbitrarily chosen reference surface on the sample being studied. Then the results are compared with the measurements obtained using a laser profilometer. The RMS roughness and Z2s parameters estimated using the DCS 420 non-metric digital camera ranges from 0.001 mm to 0.067 mm and from 0.007 to 0.073, when compared to the laser profilometer values. In the case of the Rolleiflex 6006 metric film camera, the RMS and the Z2s parameters range from 0.010 mm to 0.056 mm and from 0.005 to 0.031. The prototype photogrammetric algorithm is consequently suitable for measuring rock surface roughness.
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Lee, HS., Ahn, KW. A prototype of digital photogrammetric algorithm for estimating roughness of rock surface. Geosci J 8, 333–341 (2004). https://doi.org/10.1007/BF02910253
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DOI: https://doi.org/10.1007/BF02910253