IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 12, Issue 2 Ver. VII (Mar - Apr. 2015), PP 10-15 www.iosrjournals.org DOI: 10.9790/1684-12271015 www.iosrjournals.org 10 | Page The Accuracy of Determining the Volumes Using Close Range Photogrammetry Hossam El-Din Fawzy Lecturer, Civil Engineering Department Faculty of Engineering, Kafr El-Sheikh University, Kafr El-Sheikh, EGYPT Abstract: Time and accuracy required are the two important factors that decide on the appropriateness of volume calculations for road project, mining enterprise, geological works and building applications. Geodetic surveying methods have been insufficient for the volume calculation of the objects need to calculation of volume in a short time or in a risk area. In this paper, digital close range photogrammetry is an alternative method to volume calculation. The main objective of this paper is investigated the use of close range photogrammetry to calculate the volume instead of traditional methods. This paper gives also the sequence of the field operations and computational steps for this task. A numerical example is included to reinforce the theoretical aspects. Keywords: Close Range Photogrammetry, Accuracy, Volumes, Surfer Software. I. Introduction The volume calculations are important requirement of the construction and mining industry. The accurate volume estimation is important in many applications, for example road project, mining enterprise, geological works and building applications. The traditional methods such as the trapezoidal method (rectangular or triangular prisms), traditional cross sectioning (trapezoidal, Simpson, and average formula), and improved methods (Simpson-based, cubic spline, and cubic Hermite formula) have been used in volume computing [1]. The main elements of these methods are to collect the points that appropriate distribution and density. These methods needs more mathematical processes and take more time. The difficulties have been overcome by developments in computer technologies. The corrections of volume is direct proportional with the presentations of land surface in a best representation of land surface in best form is depend on the number of certain X,Y,Z coordinate points. The total station instrument has been used to determine the certain coordinate for land surface. In this research, digital close range photogrammetry is an alternative method to volume calculation. Digital close range photogrammetry is a method which has been used for three dimension surveying of objects for many years. By the development of digital techniques, digital close range photogrammetry used in many fields such as engineering surveying, topographic surveying, architectural surveying, archeological surveying, etc disciplines 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 three dimension models of objects included in current research topics [2]. In this study, performance in volume calculation of digital close range photogrammetry has been investigated. The ground control points in photogrammetric method are used to calculate the position and orientation of each camera in a stereo pair of photographs. In many cases the placement cannot be made because of inaccessibility or safety restrictions. Even if access is not a problem it is often difficult to place the ground control points in positions that allow for good visibility or distribution. Poor distribution of ground control points can result in the calculated position and orientation of the camera to have a non unique solution or variations of true position in the order of 10s of meters. The use of ground control points to calculate position adds significantly to the time and skill required for image processing particularly in the documentation and identification [3]. Only ground control points have to be signalized and measured in terrain by traditional methods. However, it means just a few points in a comparison to an evaluation of all points or lines in a quarry or a mine. In this paper, volume calculation performance has been investigated using two methods (traditional and digital close range photogrammetry). II. Traditional Methods For Determination The Volume Current methods used for estimating volume assumes that the ground profile between the grid points is linear (based on the trapezoidal rule), or nonlinear (based on Simpson’s 1/3 and 3/8 formulas). Generally speaking, the nonlinear profile formulas provide better accuracy than the linear profile formulas. However, all the methods mentioned above have a common drawback: The joints (grid points) of any two straight lines (the