ABSTRACT
Three dimensional model generations represents a continuous area of research, where there was a great demand for it in day to day applications. These applications move from electromagnetic propagation for telecommunication to more demanding simulations for acoustic, urban planning, virtual and augmented reality. Year after year radiometric quality and geometric accuracy of new high resolution satellites keep on improving so much where satellite imagery become a real potential solution for the production of such digital elevation models. This paper evaluates the accuracy of High Resolution Stereo-Optical Satellite Imagery (HRSI) for digital surface model production using Leica Photogrammetry Suite (LPS). A well distributed set of ground control points was determined and then surveyed using GPS technique. These points were then divided into two sets: one will act as control set; while the other will be the check points set in order to evaluate the accuracy of the 3D model and the extracted digital elevation model. These control points allow for qualitative and quantitative evaluation process. Several experiments have been performed to evaluate the 3D model from Stereo-Optical Satellite Imagery. The result of RMSe of the experiments with 3 control points showed a horizontal absolute accuracy of 0.61 m for East direction and 0.68 m for north direction. Meanwhile, the vertical absolute accuracy reaches 1.05 m. However, the best accuracy achieved using 10 control points to be 0.58 min east direction and 0.67 m in north direction for the representation of the horizontal absolute accuracy and 0.81 m for the vertical absolute accuracy. Finally, conclusions and recommendations for further research have been highlighted. |
