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Point cloud data processing and rendering method and device, equipment and storage medium

A point cloud data and processing method technology, applied in image data processing, special data processing applications, structured data retrieval, etc., to achieve the effect of fast rendering display and interactive operation

Inactive Publication Date: 2019-10-01
深圳飞马机器人科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Data chunking and thinning methods cannot fundamentally solve the problem of massive data rendering and display

Method used

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  • Point cloud data processing and rendering method and device, equipment and storage medium
  • Point cloud data processing and rendering method and device, equipment and storage medium
  • Point cloud data processing and rendering method and device, equipment and storage medium

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0036] figure 1 It is a flow chart of the point cloud data processing method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation where point cloud data is stored and called, and this method can be executed by the point cloud data processing method device. The above-mentioned point cloud data processing method and device can be realized by means of software and / or hardware.

[0037] At present, the point cloud data processing technology is to process the obtained discrete data to obtain the surface model of the object. It is a new technology to construct a 3D model based on the measured point cloud data, which is characterized by direct storage and processing in the form of points. , transfer and render 3D objects.

[0038] In practical applications, users put forward high requirements on the display speed of 3D scenes, not only to be able to dynamically display the model according to the user's interactive instructions, but also t...

Embodiment 2

[0075] Figure 4 It is a flow chart of the point cloud data rendering method provided by Embodiment 2 of the present invention. This embodiment is applicable to the case where point cloud data is rendered and displayed, and the method can be executed by the point cloud data rendering method device. The device for rendering point cloud data can be realized by means of software and / or hardware.

[0076] Such as Figure 4 As shown, the rendering method of point cloud data provided by the embodiment of the present invention mainly includes the following steps:

[0077] S410. Using the data control thread, determine node codes within the viewport range based on the paging detail node model and the viewpoint distance.

[0078] In this embodiment, the viewpoint can be understood as the user's position corresponding to the display screen. The viewport range can be understood as the range of the currently displayed screen. The node code can be understood as the number of the node c...

Embodiment 3

[0090] Figure 5 It is a schematic structural diagram of a point cloud data processing device provided in Embodiment 3 of the present invention. This embodiment is applicable to the case where point cloud data is stored and called, and the point cloud data processing method device can be implemented through software and / or implemented by hardware.

[0091] Such as Figure 5 As shown, the point cloud data processing device provided by the embodiment of the present invention mainly includes the following modules: an index structure construction module 510 , a point cloud data block module 520 and a first point cloud data reading module 530 .

[0092] Wherein, the index structure construction module 510 is used to construct an octree index structure based on the point cloud data to be processed and encode each node in the octree index structure;

[0093] The point cloud data block module 520 is used to block the point cloud data to be processed to obtain a plurality of point cl...

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Abstract

The invention discloses a point cloud data processing and rendering method and device, equipment and a storage medium. The method comprises the following steps: constructing an octree index structurebased on to-be-processed point cloud data, and encoding each node in the octree index structure; partitioning the point cloud data to be processed to obtain a plurality of point cloud data blocks; reading point cloud data in the point cloud data block; and generating an octree with a pyramid structure corresponding to the to-be-processed point cloud data according to the read point cloud data. Scheduling management of internal and external storage data is achieved through multi-thread technical means such as an operation thread, an IO thread, a rendering thread and a data unloading thread, andrapid rendering display and interactive operation of mass data are achieved.

Description

technical field [0001] Embodiments of the present invention relate to electronic map technology, and in particular, to a point cloud data processing and rendering method, device, device, and storage medium. Background technique [0002] With the development of science and technology, more and more advanced equipment is used in the field of measurement. 3D laser scanning technology has become one of the main means of rapid acquisition of 3D spatial information due to its high measurement accuracy, high sampling density, and convenient data acquisition. one. In addition, due to the high sampling frequency of multi-line laser equipment, it can generate as many as hundreds of thousands, millions or even tens of millions of three-dimensional space points per second. These three-dimensional space points not only contain position information and time information, but also It also includes intensity information and echo information. The total amount of data collected by a single o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/51G06F16/29G06T15/20
CPCG06T15/205G06F16/29G06F16/51
Inventor 王邦松李国通
Owner 深圳飞马机器人科技有限公司