CCD Camera Calibration Based On Spatial Resection With Multy-Images

In recent years, CCD camera applies to close range photogrammetry and low altitude photogrammetry progressively. Whether the precision of photogrammetric results could meet the project request, depend on the technical parameter of the camera that it is a important factor. So calibration of camera technical parameter is a key problem to guarantee result quality could meet precision request. The paper applies to calibration method - spatial resection with multi-images, depends on sign points' photos that take at calibration field, calculates through the software which programmed by ourselves, realizes the calibration for parameters of CCD camera. Through the analysis to calibration results and precision for two CCD cameras (Nikon D1X camera and Hasselblad 555 ELD camera), summarize the ways to improve calibration precision, also putting forward a calculation method - spatial intersection with multi-images, verification the reliability of all calibration parameters. The tests results indicates that the method of spatial resection with multi-images is reliable, it can meet the high calibration precision request; the calibration results of two CCD cameras are exact and reliable in the paper.