METHOD AND SYSTEM FOR CALCULATING ANGLE OF VIEW AND OPTICAL AXIS ERROR

摘要

PURPOSE: A method for calculating an angle of view and a twisted degree of an optical axis and a system for the same are provided to rapidly and exactly calculate the angle of view and the twisted degree of the optical axis in various zoom values of a camera and to correct the optical axis of the camera without repairing a camera device. CONSTITUTION: The size of a target and the distance between a subject and a camera are inputted (S22). A twisted degree of an optical axis is calculated by comparing a center point of the subject in a photographed image and a center point of the photographed image (S24). An angle of view of the photographed image is calculated based on left and right boundary areas of the subject in the photographed image (S26). [Reference numerals] (AA) Start; (BB) End; (S21) Receive images of a target from an external photographing device; (S22) Receive the size of a target from a user and the distance between the target and a camera from a distance measuring unit; (S23) Set the zoom value of the images at the maximum level; (S24) Calculate the twisted degree of an optical axis by detecting the target's central point using an image analysis process; (S25) Correct the optical axis based on the twisted degree; (S26) Calculate the angle of view of the image by detecting the left and right boundary areas of the subject using the image analysis process; (S27) Is the zoom value of the camera set at the maximum level; (S28) Adjust the camera's zoom value in the horizontal direction to an extent; (S29) Output the angle of view and the twisted degree on a screen