METHOD FOR CORRECTING LENS DISTORTION AND PRODUCING ORTHOIMAGE AND DIGITAL CAMERA BY USING THE SAME

摘要

PURPOSE: A method for correcting lens distortion and producing orthoimage and a digital camera by using the same are provided to produce the orthoimage from the planar pattern photographed by the digital camera taking an arbitrary rotational angle after processing the lens distortion correction by using automatically computed camera's relative rotational angle information to a plane. CONSTITUTION: A camera parameter previously obtained through a camera calibration(901) is stored to the inside of a digital camera(910). An image(911) obtained by a user(902) is passed through a lens distortion correction module(912). An image in which a radial lens distortion is corrected is transmitted to an orthoimage generation module(913). An image which is composed again in the orthoimage generation module(913) is inputted to a pattern recognition module(914). Information extraction and pattern recognition processes are performed by the pattern recognition module(914) and then transmitted to a display(903) and a user(902) through a communication module(915).