Auto Calibration Method for Virtual Camera based on Mobile Platform

摘要

The present invention relates to a method of automatically calibrating a virtual camera based on a mobile platform that calibrates from a plurality of images captured by a camera. The method improves the accuracy of the distance measurement between the mobile platform and the target object, Thereby improving the accuracy of the augmented reality matching technique. According to an aspect of the present invention, there is provided an image processing method comprising: (a) obtaining an image of a target object using a camera provided in a mobile platform, and inputting four or more images in different directions; A preprocessing step (S20) of detecting a plurality of straight lines from each input image; A vanishing point detection step (S30) of deriving a mean line by classifying the detected straight line by type, deriving a vanishing point using the average line, and obtaining coordinates of the vanishing point; And a parameter value derivation step (S40) of calculating the internal parameter value by applying the coordinates of the detected vanishing point to the calibration equation.