Using in Volume Computing of Digital Close Range Photogrammetry

It is important to know cutting and filling volumes in many survey, engineering and mining works. Volume calculation, generally, are completed with classic surveying methods. The trapezoidal method (rectangular or triangular prisms), classical cross sectioning (trapezoidal, Simpson, and average formula), and improved methods (Simpson-based, cubic spline, and cubic Hermite formula) have been presented in the literature. Geodetic surveying methods have been insufficient fort he volume calculation of the objects need to calculation of volume in a short time or in a risk areas, or unreachable areas. In this case digital close range photogrammetry is an alternative method to volume calculation.Digital close range photogrammetry is a method which has been used for 3D surveyings of objects for many years. By the development of digital techniques, digital close range photogrammetry used in many fields such as engineering surveyings, topographic surveyings, architectural surveyings, archelogical surveyings, etc diciplines has become a productive, faster and an economical method. Due to the developments in digital photogrammetry and computer technology in past years, to constitute of 3D models of objects included in current research topics.In this study, performance in volume calculation of digital close range photogrammetry has been investigated. The usability degree of 3D photomodelling in volume calculation of complex figures which may not be reached and requires speed sometimes will be investigated in this study. A suitable object (stone heap) has been selected fort his purpose. The volumes supplied from 3D photomodels of objects would be compared with volumes calculated from classical techniques. The results have been analyzed with respect to time, cost and accuracy.