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Method of estimating motion parameters of linear global camera in multi-view reconstruction

A camera motion and parameter estimation technology, applied in the field of multi-view geometry and 3D reconstruction, can solve the problems of low precision, complex calculation, noise sensitivity, etc., and achieve the effect of overcoming initialization error, simple calculation, and improved accuracy

Active Publication Date: 2018-07-13
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Either the calculation is too complicated, it is difficult to strike a balance between computational complexity and precision, or it is difficult to implement, or the precision is not high, although the calculation is simple, but the effect is not ideal, or it is sensitive to noise
In addition, it is impossible to effectively solve the large-scale reconstruction applications of hundreds of image scenes

Method used

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  • Method of estimating motion parameters of linear global camera in multi-view reconstruction
  • Method of estimating motion parameters of linear global camera in multi-view reconstruction
  • Method of estimating motion parameters of linear global camera in multi-view reconstruction

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Embodiment Construction

[0041] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] The present invention provides a linear global camera motion parameter estimation method in multi-view reconstruction. Based on feature point matching and multi-view geometry theory, firstly, pairwise matching is performed from a series of images of fixed scenes to obtain matching point pairs. From the matching point pairs Calculate the paired essential matrix, decompose the essential matrix to obtain the paired relative rotation matrix; then use these paired relative rotations to perform global optimization according to the objective function to obtain the absolute rotation matrix; then find out the essential matrix by multi-view geometry theory A new expression of , combined with image feature point pairs to construct a linear equation system, and solve the absolute translation vector, such as figure 1 As shown, the method of the p...

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Abstract

The invention relates to a method of estimating motion parameters of a linear global camera in multi-view reconstruction and belongs to the technical field of multi-view geometry and three-dimensionalreconstruction. The method comprises the steps of S1, inputting multiple images, and subjecting the multiple images in a fixed scene to pairwise matching; S2, using a theory based on multi-view geometry and a global optimization method to optimize all cameras in a same coordinate system; S3, calculating absolute rotation of each camera; S4, calculating absolute translation vector of each camera via the absolute rotation of the camera and point matching in accordance with polar geometric constraint relationship in multi-view geometry. The method has the advantages that reconstruction application of a big scene can be handled, noise influence is low, calculating is simple, other extra information is not required, and motion parameter precision is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of multi-view geometry and three-dimensional reconstruction, and relates to a linear global camera motion parameter estimation method in multi-view reconstruction. Background technique [0002] In computer vision, 3D reconstruction is a hot research issue, and the reconstructed 3D model has a wide range of application scenarios. 3D reconstruction technology is playing an important role in human life. In particular, image-based 3D reconstruction has been widely used in 3D game development, reconstruction of ancient cultural relics, 3D digital city design, industrial machine prototype design and other fields. Therefore, the research on image-based 3D reconstruction technology It is one of the important directions in the field of computer vision and graphics research. After years of research and the development of computer technology, some of these problems have been better solved, such as camera calibration, ...

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Application Information

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IPC IPC(8): G06T7/80G06K9/62
CPCG06T7/80G06V10/757G06F18/22
Inventor 秦红星胡闯
Owner CHONGQING UNIV OF POSTS & TELECOMM
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