THE EFFICIENT OF USING THE CLOSE RANGE PHOTOGRAMMETRY TECHNIQUE INSTEAD OF A PRECISE TERRESTRIAL SURVEYING TECHNIQUE FOR DEFORMATION MONITORING IN UNSTABLE STRUCTURE BUILDINGS

Time, cost and accuracy required are the important factors that decide on the deformation monitoring in unstable structure buildings. Several methodologies are currently following when a precise determination of displacements is required. In this paper, close range Photogrammetry is an alternative method for deformation monitoring. The main objective of this paper has investigated the use of close range Photogrammetry to calculate the deformation monitoring instead of Precise terrestrial surveying methods. Precise terrestrial surveying methods have been insufficient for the Deformation monitoring in a short time and low cost or in a risk area. This paper gives also the sequence of the field operations and computational steps for this task.