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3D reconstruction method based on single camera sfs algorithm

A three-dimensional reconstruction, single-camera technology, applied in computing, 3D modeling, image analysis, etc., can solve the problems of poor flexibility and high cost, and achieve the effect of speeding up speed, reducing cost, saving memory and computing time

Active Publication Date: 2018-02-09
南京冉科信息技术有限公司
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Problems solved by technology

[0007] The purpose of the present invention is to provide a three-dimensional reconstruction method based on the single-camera SFS algorithm, which solves the problems of high cost and poor flexibility of the calibration method in the existing three-dimensional reconstruction

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  • 3D reconstruction method based on single camera sfs algorithm

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] The present invention is based on the three-dimensional reconstruction method of single camera SFS algorithm, specifically implements according to the following steps:

[0045] Step 1, calibrate the camera

[0046] 1.1) Set the world coordinate system

[0047] according to figure 1 The rebuild system shown is set up in such a way that the figure 2 The calibration plate shown is placed on the turntable of the 3D reconstruction system to set the direction of the world coordinate system, such as image 3As shown, the direction of the vertical turntable is the Y direction of the world coordinate system, and the direction is downward; the horizontal direction of the turntable is the X direction of the world coordinate system, and the direction is to the right; the vertical direction of the turntable is the Z direction, and the direction...

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Abstract

The invention discloses a three-dimensional reconstruction method based on a single camera SFS algorithm. The method is implemented according to following specific steps: firstly calibrating a camera, and then extracting a target outline, and finally performing the target three-dimensional reconstruction based on voxel by adopting SFS algorithm. The single camera is used for shooting a picture so that the cost of the three-dimensional modelling is reduced; a method based on voxel but not based on a surface patch and an object feature point is adopted for the object three-dimensional reconstruction, the method based on the surface patch is time-consuming, and the method based on the object feature point is large in difficulty of determining the feature point, and the effect of the three-dimensional reconstruction is directly influenced; in the three-dimensional reconstruction process, the internal voxel is searched by using precomputation and fast voxel projection algorithm, the computer memory and the operation time are greatly saved, and the three-dimensional modelling speed is accelerated.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional modeling and image processing, and relates to a three-dimensional reconstruction method based on a single-camera SFS algorithm. Background technique [0002] In computer vision, 3D reconstruction refers to the process of reconstructing the 3D information of an object from single-view or multi-view images. 3D model technology can be used in industrial design, defect detection, reverse engineering, robot guidance, geomorphological measurement, medical information, biological information, criminal identification, digital cultural relics collection, film production, game creation materials, etc. [0003] The common method of 3D modeling is to use a 3D scanner. This method is to actively project laser light or structured light to the object, and obtain the distance information of the 3D surface of the object through time difference ranging or triangulation ranging, and create a point cloud of...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/00G06T7/80
CPCG06T7/50G06T7/80
Inventor 高磊谢凡凡卫永波
Owner 南京冉科信息技术有限公司