Apparatus and method for camera parameter calibration

摘要

The present invention provides an apparatus and method for camera parameter calibration which is capable of easily and simply setting physical and optical characteristic parameters of a camera in order to acquire information on actual measurement of an image provided through the camera with high accuracy. The camera parameter calibration apparatus and method has an advantage of correct image analysis that it is capable of increasing accuracy of information of measurement through an image only with an intuitive interface manipulation, without taking a time-consuming and incorrect actual measurement procedure, by determining parameters of the space model corresponding to the image by displaying a 3D space model corresponding to a real space of the image on the image and changing and adjusting visual point parameters such that the 3D space model matches the display image, and regarding the determined parameters of the space model as camera parameters of the image.

主权项

1. A camera parameter calibration apparatus, comprising:
a 3-dimensional (3D) space manager generating a 3D object in a 3D space using a plurality of parameters related to a visual point of the 3D space and a 3D object database, the plurality of parameters including those of height, tilt angle, field of view, lens characteristics, focal length and resolution of a camera, the 3D object being replaceable, addable or removable according to a control of a user via a user interface, and being displayable on a base surface of the 3D space using a 2D grid; an image combiner combining the 3D object generated by the 3D space manager with a real image provided from an external image source, and displaying the combined 3D object and the real image, the plurality of parameters being manually alterable by the user of the apparatus via the user interface to match the generated 3D object to an object in the real image; and a setting manager storing any altered parameter and associating the altered parameter with the external image source.