Long Focal Lens Camera Calibration Applied for Level-of-Detail Terrain Texture Fusion

In the case of surface reconstruction from uncalibrated close-range images, the models fused with level-of detail texture are necessary for many applications. And camera calibration of different scale lens becomes the key problem. For long focal length digital camera calibration, there´s its particularity. In this paper, aiming at long lens, a camera calibration method based on point-line fusion with vanishing points is proposed. This paper took the experiment for canon 5D-105mm, and the calibrated parameters were used for terrain reconstruction test, it demonstrated this method is effective for 3D model fused with multi-resolution texture from different lens image.