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Three-dimensional graph real-time grid generation method

A technology for generating 3D graphics and grids, applied in the field of 3D scanning, can solve problems such as high requirements, increased hardware requirements, and inability to meet real-time grid accuracy requirements, so as to save costs and avoid excessive accumulation of errors

Pending Publication Date: 2022-04-12
FUSSEN TECH CO LTD
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Problems solved by technology

However, the current grid algorithm implemented by the CPU has high requirements on the CPU, which affects the real-time scanning speed; the existing GPU grid algorithm not only increases the hardware requirements, but also is limited by the size of the video memory, and cannot meet the real-time network requirements. The accuracy of the grid is required, so we propose a real-time grid generation method for 3D graphics to solve the above-mentioned problems

Method used

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  • Three-dimensional graph real-time grid generation method

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0021] see figure 1 , the present invention provides a technical solution: a method for generating a real-time grid of three-dimensional graphics, comprising the following steps: initializing the subspace: according to the size of the scanned object, establishing the minimum outer bounding box Volume of its space Ω, and then dividing the Volume space Equidistance division to get the subspace set Volume=∑ i,j,k block i,j,k , according to the size of the scanned object and the resolution of the grid, the three-dimensional space of the scanned object is roughly divided into several subspaces of the same size, and two adjacent subspaces have intersections.

[0022] The...

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Abstract

The invention relates to the technical field of three-dimensional scanning, in particular to a method for generating a three-dimensional graph real-time grid, which comprises the following steps of: initializing a subspace: establishing a minimum outer bounding box Volume of a space omega according to the size of a scanned object, and then equidistantly dividing the Volume space to obtain a subspace set Volume = Sigma i, j, kblock i, j, k; processing a frame of point cloud; acquiring the successfully spliced point cloud; calculating which subspace the point cloud belongs to according to the spatial position of the point cloud; and further subdividing the subspace: if the subspace is not subdivided and the point cloud is divided into the subspace, further subdividing the subspace. According to the three-dimensional graph real-time grid generation method, on the premise that the scanning speed is met, the memory is compressed to the maximum extent, high-precision grid display is given as much as possible, and visual navigation in the scanning process is facilitated.

Description

technical field [0001] The invention relates to the technical field of three-dimensional scanning, in particular to a method for generating a real-time grid of three-dimensional graphics. Background technique [0002] In the field of 3D scanning equipment, the workflow of the scanning equipment is as follows: 3D point cloud is reconstructed by obtaining 2D image information, and the 3D point cloud is spliced ​​according to its characteristics to form a complete point cloud in the unified coordinate system, and finally the 3D point cloud Generate 3D grids to complete the digitization of real objects. In 3D real-time scanning applications, WYSIWYG real-time rendering is an important link. There are two methods of user interaction in real-time scanning: point cloud rendering and grid rendering. Point cloud rendering is faster than grid rendering and can meet the requirements of real-time rendering. However, in many scenarios, 3D grid is the real-time Rendering and final outpu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/20G06T17/00G06T7/73G06T15/20
Inventor 孙军张佰春吕广志
Owner FUSSEN TECH CO LTD
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