Image positioning method and device based on ray model three-dimensional reconstruction

An image positioning and ray model technology, used in image enhancement, image analysis, image data processing, etc., can solve the problems of poor positioning accuracy, position accuracy and sampling interval, high reconstruction cost, and large collection volume, and achieve improved accuracy. , the reconstruction effect is good, the effect of improving the calculation speed

Active Publication Date: 2016-08-10
TSINGHUA UNIV
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Problems solved by technology

[0004] However, there is a problem: for the above image retrieval method, because the three-dimensional information is not fully utilized, it can only be applied to the situation where the pose difference between the query image and the library image is small, and its positioning accuracy is not better than the position accuracy and accuracy of the library image itself. Sampling interval; compared with the image retrieval method, although the abov

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  • Image positioning method and device based on ray model three-dimensional reconstruction
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  • Image positioning method and device based on ray model three-dimensional reconstruction

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[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0023] The image positioning method and device based on ray model three-dimensional reconstruction according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] figure 1 is a flowchart of an image positioning method based on 3D reconstruction of a ray model according to an embodiment of the present invention. Such as figure 1 As shown, the image positioning method based on the three-dimensional reconstruction of the ray model may include:

[0025] S101. Coll...

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Abstract

The invention discloses an image positioning method and device based on ray model three-dimensional reconstruction. The method comprises the steps of acquiring a plurality of images in a plurality of scenes in advance, and extracting features of the images to obtain a plurality of feature point sets; carrying out feature matching of every two images for the plurality of images, generating a corresponding eigenmatrix according to the feature matching, and carrying out noise processing therefor; carrying out three-dimensional reconstruction based on a ray model according to the feature matching and the eigenmatrix after the noise processing, to generate a three-dimensional feature point cloud and a reconstructed camera posture set; obtaining a query image, and extracting features thereof to obtain a corresponding two-dimensional feature point set; and carrying out image positioning according to the two-dimensional feature point set, the three-dimensional feature point cloud and the reconstructed camera posture set based on a positioning posture graph optimization frame. The method improves the reconstruction effect, reduces the acquisition cost in the reconstruction process, increases the calculation speed, and improves the image positioning precision in the image positioning process.

Description

technical field [0001] The invention relates to the technical field of image processing and pattern recognition, in particular to an image positioning method and device based on three-dimensional reconstruction of a ray model. Background technique [0002] Image positioning technology calculates its own pose through one or a group of images. This technology can be used in robot navigation, path planning, digital tourism, virtual reality, etc., and can be applied to areas where GPS (Global Positioning System, Global Positioning System) cannot work, such as indoors and underground. Compared with the positioning technology based on Bluetooth and WiFi (Wireless Fidelity, wireless fidelity), the image positioning technology does not depend on professional equipment, and the implementation cost is low. [0003] In related technologies, there are mainly two types of methods based on image positioning: one is based on image retrieval, which looks for the nearest neighbor image of t...

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Application Information

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IPC IPC(8): G06T17/00G06T7/00
CPCG06T17/00G06T2207/30244G06T7/55G06T2207/20072G06V10/757G06T7/80G06T17/005G06T2207/10028
Inventor 周杰邓磊段岳圻
Owner TSINGHUA UNIV
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