Point cloud hole repairing method based on SFM

A point cloud and hole technology, applied in image data processing, instruments, calculations, etc., can solve the problems of less information in the hole area and unsatisfactory hole repair effect, and achieve the effect of improving efficiency and accuracy

Active Publication Date: 2018-01-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0005] Technical problem: Aiming at the problem that there is less information in the hole area in the process of hole repair, and the effect of complex hole repair is not ideal, combined with the mature technology of merging SFM and laser scanning to obtain point cloud information in 3D reconstruction, the present invention provides a Point Cloud Hole Repair Method Based on SFM

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  • Point cloud hole repairing method based on SFM
  • Point cloud hole repairing method based on SFM
  • Point cloud hole repairing method based on SFM

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Embodiment Construction

[0046] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention All modifications of the valence form fall within the scope defined by the appended claims of the present application.

[0047] Referring to the accompanying drawings, specific embodiments of the present invention will be described in more detail below. The programming implementation tool uses Visual Studio 2013 to conduct experiments on ceramic cups and human faces respectively.

[0048] Concrete implementation steps of the present invention are as follows:

[0049] Step 1: Obtain the boundary of the hole in the point cloud

[0050] Step 1.1: Obtain the 2D boundary points of the poi...

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Abstract

The invention discloses a point cloud hole repairing method based on SFM (Structure From Motion), which includes the following steps: (1) acquiring point cloud data through the grating projection method and the SFM method, and extracting the boundary points of a 3D point cloud hole according to point cloud 2D phase information acquired using the grating projection method; (2) registering a point cloud data set acquired using the SFM method and a point cloud data set acquired using the grating projection method; (3) acquiring the supplement points of the hole area in the point cloud acquired using the grating projection method from the data set acquired using the SFM method; and (4) based on the supplement points, using a radial basis function to further repair the hole. The algorithm is robust. The repair effect is highly precise. More detail information of an object can be restored.

Description

Technical field: [0001] The invention relates to a point cloud hole repair method based on SFM, and belongs to the technical field of point cloud post-processing. Background technique: [0002] In the process of 3D measurement, due to the complex shape of the object or the defect of the measurement method itself, there are often holes in the 3D point cloud data. The grating projection measurement method has the characteristics of fast speed and high degree of automation. However, due to the need to project auxiliary light during measurement, the obtained point cloud data will produce hole areas due to the occlusion of the object itself and the reflectivity of the surface of the measured object. The existence of holes seriously affects the subsequent operation of the point cloud. Therefore, hole repair is indispensable. [0003] The difficulty of hole repair lies in: 1. How to accurately extract the boundary of the hole; 2. How to obtain more information in the hole area so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33
Inventor 盖绍彦达飞鹏曾露露
Owner SOUTHEAST UNIV
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