The interest in the use of small format and low-cost digital cameras is increasing in aerial Photogrammetry. This is as a viable alternative for small areas mapping. A great deal of research on the geometric quality that those cameras allow are currently being carried out and a crucial issue is the system calibration. The stability of these equipment is target of intense research. In spite of the constant calibration parameters throughout the time, differences in the environmental conditions during calibration and during the photogrammetric flight may issue errors not treated in classical calibration. Among the large frame photogrammetric digital cameras, the use of on-the-job calibration parameters is currently standard for the aerotriangulation. This paper analyses the inclusion of those parameters in the aerotriangulation of a block of 13 images taken with a low-cost digital camera. The results show a significant accuracy improvement when those parameters are used, mainly in altimetry.
Photogrammetry; Camera Calibration; Additional Parameters
