Camera calibration method and system for object three-dimensional geometrical reconstruction

Abstract

The invention discloses a camera calibration method and system for object three-dimensional geometrical reconstruction, and belongs to the technical field of computer image processing. The method includes the following steps: arranging one or more coded calibration mold plates in a scene containing a to-be-reconstructed dimensional object; picking serial images of the to-be-reconstructed dimensional object through a camera; processing the image sequence and obtaining the image coordinate of each calibration point in each visible calibration mold plate; and obtaining the camera calibration parameters according to the image coordinates. The system comprises a group of camera calibration mold plates, the camera and a camera calibration processing unit, wherein the camera calibration mold plates can be arranged around the to-be-reconstructed object; and the camera calibration processing unit is used for conducting image analysis, geometrical processing and camera calibration on the serialimages and obtaining the camera calibration parameters. The method and system can be used for the technical field of computer vision, computer image processing, three-dimensional geometrical modeling, and the like.

Description

technical field [0001] The invention relates to technical fields such as computer technology, computer vision, computer image processing, and three-dimensional geometric modeling, and in particular to a method and system for calibrating a three-dimensional geometric reconstruction camera based on computer stereo vision. Background technique [0002] Quickly and conveniently establish 3D geometric models of various objects in the real world. It has wide applications in the fields of virtual reality, computer-aided design, 3D maps, digital museums, and game entertainment. It is an important research content of computer vision. The camera calibration technology is one of the key technologies and methods of the 3D reconstruction system. [0003] The methods of 3D reconstruction can be mainly divided into three types: manual modeling, image-based rendering and image-based modeling. Traditional manual modeling is inefficient; although image-based rendering is lifelike and vivid, ...

AI Technical Summary

Problems solved by technology

[0013] The main purpose of the present invention is to propose a camera calibration method and system for three-dimensional geometric reconstruction of an object with lower environmental requirements and restrictions on the size and weight of the target object, so as to solve the problems existing in the existing three-dimensional reconstruction technology that are not suitable for larger, heavier or unsuitable objects. It is suitable for the problem of 3D reconstruction of moving objects, so it can solve the problem that it is difficult to apply the 3D reconstruction technology based on calibration objects to the above objects, thus expanding the application range of 3D reconstruction technology based on images

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