Patent ID: 7778534
Filing Date: 2010-08-17
Classification: G01C,G06T

Abstract:
1. A method for correcting geometry of an image using a Line-Of-Sight (LOS) vector adjustment model, the method comprising: acquiring an image and auxiliary data for the image, the image obtained by photographing a ground surface; acquiring ground coordinates for a ground control point and image coordinates of the image matching the ground coordinates; adjusting a LOS vector of a sensor of a photographing device used to photograph for photographing the image using the auxiliary data acquired; and adjusting the ground coordinates and the image coordinates acquired, thus obtaining error correction data; and applying the acquired auxiliary data and the obtained error correction data obtained to LOS vector adjustment models, and assigning ground coordinates to corresponding image coordinates of the image, thus performing exterior orientation for correcting distortion of the image, wherein acquiring image coordinates matching the ground coordinates is performed using image coordinates based on sensor models that are obtained using sensor models represented by the following Equations 7 and 8: where (P photographing angles of the sensor among the auxiliary data, and ψ x and ψ y are photographing angles of the sensor, obtained using a position, velocity and attitude of the photographing device, among the auxiliary data, F 1 and F 2 are residual errors due to distortion of image, r 11 to r 33 are the elements of R=(M·A) T , the position coordinate rotation matrix (M) and the attitude coordination rotation matrix (A) follow  are the elements of the LOS vector ({right arrow over (u)}) and μ is the parameter related with {right arrow over (u)} and {right arrow over (P)} and E