Accuracy Analysis for New Close - Range Photogrammetric Systems

Mobile mapping system is a close range photogrammetric system proved to be useful in many GIS applications. Whenever an area needs to be surveyed, a van equipped with all the necessary instruments and sensors travels into that area and takes a series of images of the objects and collects other information related to each images. The data is displayed on the workstation monitor. Through the interaction, the operator can measure all of the objects that appear in multiple images and subsequently calculate and store 3D data in GIS database. Due to financial limitation it was impossible to have a mobile system. But using simple technique it was possible to investigate many factors, which could affect the accuracy and performance of such system. So, this study was done using professional non-metric 35mm camera. Image coordinates were measured using stereo-comparator and the data was processed on a personal computer using bundle with self-calibration aerial triangulation program. The description of the tests which have been carried out as well as the results and their analysis are presented.