Calibra？？o em servi？o de camara digital de baixo custo com o uso de pontos de apoio altimétrico

knowledge of the internal camera geometry is an important task to perform photogrammetric works. however, iops from camera calibration using dataset with the same techniques and environmental conditions of the aerial survey is a prerequisite to produce photogrammetric mapping using direct georeferencing technique. in direct georeferencing, the exterior orientation parameters are determined based on gps and ins observations. the use of these parameters, in the calibration process with additional ones, reduces the correlations between interior and exterior orientation parameters. this paper investigates the use of camera position and different configurations of vertical control points in the on-the-job calibration of digital camera kodak dsc pro slr/c. the advantages of using cross strips to perform on-the job calibration were analyzed by statistical correlations between interior and exterior orientation parameters. finally, the vertical and horizontal accuracies from the calibration experiments, with different configurations of vertical control points and flights strips were compared using the analysis of discrepancies in the check points.