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Three-dimensional point cloud scene updating method based on crowdsourcing images

A technology of 3D point cloud and update method, which is applied in the field of 3D point cloud scene update based on crowdsourced images, and can solve the problem of not obtaining the absolute scale of the scene.

Pending Publication Date: 2020-12-25
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many studies on 3D reconstruction using monocular vision, but most of them do not obtain the absolute scale of the scene, or add prior information by adding calibration objects to perform 3D reconstruction of absolute scale

Method used

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  • Three-dimensional point cloud scene updating method based on crowdsourcing images
  • Three-dimensional point cloud scene updating method based on crowdsourcing images
  • Three-dimensional point cloud scene updating method based on crowdsourcing images

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Embodiment Construction

[0073] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0074] Embodiments of the present invention provide a method for updating a 3D point cloud scene based on crowdsourcing images.

[0075] Please refer to figure 1 , figure 1 It is a flow chart of a method for updating a 3D point cloud scene based on crowdsourcing images in an embodiment of the present invention, specifically comprising the following steps:

[0076] S1. Obtain a three-dimensional point cloud scene image; obtain a three-dimensional point cloud scene image from the Internet or locally, and the three-dimensional point cloud scene image is obtained by the user using a smart phone or an ordinary camera to continuously shoot a three-dimensional point cloud scene from multiple angles image, wherein the plurali...

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Abstract

The invention provides a three-dimensional point cloud scene updating method based on crowdsourcing images. The method comprises the steps of acquiring a three-dimensional point cloud scene image anda first point cloud of a three-dimensional point cloud scene corresponding to the image; preprocessing the first point cloud and the second point cloud to obtain a preprocessed first point cloud and apreprocessed second point cloud, and calculating an absolute scale of the first point cloud according to the preprocessed first point cloud and the preprocessed second point cloud; registering the first point cloud and the second point cloud to generate a third point cloud; and performing surface reconstruction on the third point cloud to generate an updated three-dimensional point cloud scene. The method has the beneficial effects that the modeling cost is reduced, the acquisition of the three-dimensional point cloud scene with measurable precision reaching centimeter level is realized, andthe three-dimensional point cloud scene can be quickly and accurately updated.

Description

technical field [0001] The invention relates to the fields of three-dimensional reconstruction and point cloud registration, in particular to a method for updating a three-dimensional point cloud scene based on crowdsourcing images. Background technique [0002] With the vigorous development of the global mobile Internet, geographic information science has entered a new stage of development: from the government to the general public, from macro to micro, and from outdoor to indoor and outdoor integration. From the perspective of indoor geospatial data requirements, the rising popularity of geospatial applications poses challenges to surveying and mapping information technology such as speed, equipment cost, portability, and computational intensity. From this point of view, when performing 3D reconstruction of a scene or object, although the 3D scanning equipment method is simple to operate, the accuracy of the model is high, and the time complexity is relatively low, but the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T7/33
CPCG06T17/00G06T7/33G06T2207/10028
Inventor 徐雨航盈孟佳杨超祁昆仑
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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