Patent ID: 8184144
Filing Date: 2012-05-22
Classification: G06T,H04N

Abstract:
1. A method of calibrating interior and exterior orientation parameters for a remotely controlled camera, comprising steps of: (a) obtaining all images of an object in a 3-dimensional (3D) object space on 2-dimensional (2D) image spaces through perspective projection by a camera at a fixed rotation angle; and combining coordinates of ground control points on said 2D image spaces and corresponding coordinates of said ground control points in said 3D object space to calibrate interior orientation parameters (IOP) as additional parameters at different zoom scales by solving first collinearity equations through self calibration bundle adjustment; (b) obtaining polynomial corresponding equations with said calibrated IOPs at said different zoom scales where each of said zoom scales of said camera has corresponding IOPs; (c) combining with said calibrated IOPs to obtain coordinates of ground control points on 2D image spaces at different rotation angles and corresponding coordinates of said ground control points in a 3D object space at said rotation angles to calibrate exterior orientation parameters (EOP) as additional parameters at said rotation angles by solving second collinearity equations through resection method; and (d) obtaining curve surfaces of said calibrated EOPs at said rotation angles through interpolation where each of said rotation angles of said camera has corresponding EOPs.