Three-dimensional reconstruction method of rotating stereovision
A technology of three-dimensional reconstruction and stereo vision, applied in the field of three-dimensional reconstruction of rotary stereo vision, can solve the problems of poor flexibility and high calibration cost
Inactive Publication Date: 2008-12-10
ZHEJIANG UNIV OF TECH
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[0004] In order to overcome the high calibration cost and poor flexibility of the traditional three-dimensional reconstruction method of stereo vision, the present invention provides a three-dimensional reconstruction method of rotating stereo vision that can greatly reduce the number of calibrations, improve calculation efficiency, reduce costs and have certain flexibility
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[0040] The present invention will be further described below in conjunction with the accompanying drawings.
[0041] refer to Figure 1 to Figure 5 , a kind of three-dimensional reconstruction method of rotating stereo vision, described three-dimensional reconstruction method comprises the following steps:
[0042] 1) Camera manual calibration: set one axis of the world coordinate system to coincide with the rotation axis, and one coordinate plane to be parallel to the plane of the calibration plate (the plane of the calibration plate is parallel to the rotation axis). It is set here that the axis coincident with the rotation axis is the Y axis, and the coordinate plane parallel to the plane of the calibration plate is the XOY plane. Calibration board as appendix Figure 5 As shown, in this way, the world coordinates of the center point on the calibration plate can be obtained. By moving the calibration plate in the Z direction, the world coordinates of multiple points in s...
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The present invention relates to a rotary solid vision three-dimension reconstructing method, comprising the steps as follows: firstly, a vidicon is demarcated manually to obtain a vidicon projection matrix when a rotary platform does not rotate; secondly, the vidicon projection matrix before the rotary platform rotates is decomposed to obtain a vidicon internal parameter matrix and an external parameter matrix while not rotating; thirdly, the vidicon projection matrix rotating for any angle is obtained in terms of rotation angle and the vidicon internal parameter matrix before rotating; fourthly, the space three-dimension information of an object is obtained by the information of an object picture which is shot from two angles or multiple angles and the vidicon projection matrix at the time. The present invention provides a rotary solid vision three-dimension reconstructing method which can greatly reduce demarcating times, improve calculation efficiency and reduce the cost.
Description
technical field [0001] The invention relates to a three-dimensional reconstruction method based on computer vision, in particular to a three-dimensional reconstruction method for rotating stereo vision. This method is mainly used for surface reconstruction of three-dimensional objects and has a wide range of applications, typically including workpiece detection in the manufacturing industry, scene depth perception, reverse engineering, and three-dimensional scanning of objects. Background technique [0002] 3D reconstruction is an important task in computer vision. The task of 3D reconstruction is to obtain its 3D spatial information from the 2D image information of the object. The application of 3D reconstruction is very extensive, such as medical field, public security field, meteorology, engineering technology and so on. The general method of 3D reconstruction is to calculate the 3D information of the object in a given space through the object image information obtained...
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IPC IPC(8): G06T17/00G06T7/00
Inventor 陈胜勇管秋漆喜庆刘盛毛国红李兰兰骆广娟
Owner ZHEJIANG UNIV OF TECH