Camera calibration method and system for object three-dimensional geometrical reconstruction
A three-dimensional geometry and calibration technology, applied in the fields of three-dimensional geometric modeling, computer image processing, computer vision, and computer technology, can solve the problems that three-dimensional reconstruction technology is not suitable for three-dimensional reconstruction and difficult to apply three-dimensional reconstruction technology, and achieves reliable and reliable algorithms. Wide range of effects with simple reconstruction process
Active Publication Date: 2011-05-11
PEKING UNIV
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[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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[0069] The present invention will be described in more detail below through specific embodiments in conjunction with the accompanying drawings.
[0070] The following embodiment provides a camera calibration method, generally speaking, the method includes the following aspects: a calibration template encoding method, used for identification of calibration templates during three-dimensional reconstruction of large, medium and small objects; The calibration template layout and image acquisition method are used to arrange the calibration template in the scene containing the three-dimensional object to be reconstructed and obtain a series of images; the image processing method processes the acquired images to obtain all visible calibration templates in the image The calibration point outline; the calibration point recognition method is used to identify and distinguish template calibration points and template calibration point groups from the contour set; the template recognition me...
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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, ...
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IPC IPC(8): G06T7/00G06T17/00
Inventor 汪国平王宇宙
Owner PEKING UNIV
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