Interactive multi-vision point three-dimensional model reconstruction method

A 3D model and multi-view technology, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as unsatisfactory performance, achieve the effects of reducing processing time, improving accuracy, and high reconstruction quality

Inactive Publication Date: 2008-09-24
安徽沃孚医疗科技有限公司
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Problems solved by technology

However, in terms of reconstruction speed, the performance of these technologies is relatively unsatisfactory.

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  • Interactive multi-vision point three-dimensional model reconstruction method
  • Interactive multi-vision point three-dimensional model reconstruction method
  • Interactive multi-vision point three-dimensional model reconstruction method

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Embodiment Construction

[0031] An interactive multi-viewpoint three-dimensional model reconstruction method proposed by the present invention is described in detail in conjunction with the accompanying drawings and embodiments as follows:

[0032] Method flow process of the present invention, as figure 1 shown, including the following steps:

[0033] (1) Image acquisition: the user uses multiple cameras to obtain two-dimensional images I of multiple viewpoints of the object i , where the subscript i represents the number of each corresponding viewpoint; in the embodiment of the present invention, the two-dimensional image obtained by the camera of 10 viewpoints is as follows figure 2 shown.

[0034] And use the Zhang Zhengyou camera calibration method to obtain the geometric parameters P of each camera i , expressed as a 3*3 matrix and a 3*4 matrix;

[0035] (2) Acquisition of the contour map: the user uses the Lazy Snapping algorithm on the computer screen for each viewpoint T i The two-dimens...

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Abstract

The invention relates to a three-dimensional reconstruction algorithm introducing an interactive operation for a user, belonging to the technical field of a computer multimedia. The method is as followings: the user utilizes a plurality of cameras to obtain a two-dimensional image Ii of a plurality of viewpoints of an object and extracts a contour map of the object; the computer obtains a visual shell model of a real scene according to a geometric parameter of every camera and the contour map, and turns the visual shell model into a point cloud form; a two-dimensional characteristic in the image is extracted to optimize a part of a real surface model corresponding to the characteristics; the user divides the image Ii into a region of a smoothness and the region of a subsidence; a nonuniform weighted graph is set up according to the areas selected above to find out a minimal cut of the image to obtain the optimized scene surface model. Combined with an auxiliary operation of the user, the three-dimensional reconstruction algorithm is capable of reconstructing the high-quality three-dimensional model of the object relatively fast according to the multi-view image which is shot of the actual object and the camera parameter corresponding to each image.

Description

technical field [0001] The invention belongs to the technical field of computer multimedia, in particular to a multi-viewpoint three-dimensional reconstruction method. Background technique [0002] 3D reconstruction is the process of modeling and expressing the 3D geometry of the surface of the scene in the real world by using an appropriate data structure. 3D reconstruction technology will have great applications in entertainment, CAD, cultural relics protection and many other aspects. For a long time, 3D reconstruction has been achieved mainly by means of 3D scanners and other tools that can directly obtain depth information, which is called scanning 3D reconstruction. In imitation of human visual function, people can also obtain three-dimensional geometric information from two-dimensional views of multiple perspectives of objects, so as to achieve the purpose of three-dimensional reconstruction. The above 3D reconstruction based on multiple 2D views is called multi-view...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T1/00G06T7/00
Inventor 戴琼海刘烨斌冯晓端
Owner 安徽沃孚医疗科技有限公司
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