A processing method and device for point cloud data, and a point cloud rendering method and device

A point cloud data and processing method technology, applied in the computer field, can solve problems such as low efficiency, and achieve the effect of improving rendering efficiency

Active Publication Date: 2021-03-16
NAVINFO
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the prior art, the rendering efficiency of the scene within the field of view of the current viewpoint is low, thereby providing a method and device for processing point cloud data and a method and device for rendering point cloud

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  • A processing method and device for point cloud data, and a point cloud rendering method and device
  • A processing method and device for point cloud data, and a point cloud rendering method and device
  • A processing method and device for point cloud data, and a point cloud rendering method and device

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Embodiment Construction

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] The technical features involved in different embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0030] This embodiment provides a method for processing point cloud data, which can be used for preliminary processing of the original point cloud data, such as figure 1 shown, including:

[0031] Step S101, constructing an octree structure of the original point cloud data based on the spatial characteristics of...

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Abstract

The invention relates to the field of computer technology, and particularly to a point cloud data processing method, a point cloud data processing device, a point cloud rendering method and a point cloud rendering device, wherein the point cloud data processing method comprises the steps of constructing an octree structure of original point cloud data based on a spatial characteristic of the original point cloud data, wherein the octree structure comprises leaf nodes and non-leaf nodes; equally dividing the non-leaf nodes into a plurality of spatial blocks according to the spatial structure; and performing traversal of each spatial block in a plurality of spatial blocks, and if the point cloud data is included in the spatial block, extracting the point cloud data of one point cloud, thereby obtaining the non-leaf node after extraction. Through performing extraction processing on the non-leaf node of the octree structure, rendering efficiency is improved in performing screen rendering by means of the point cloud data of the non-leaf node. Furthermore, because the point cloud which is obtained through extraction is uniformly dispersed in the spatial block which comprises the point cloud, a problem of characteristic covering caused by over-concentration in an extraction result, and the characteristic of the original point cloud can be well represented.

Description

technical field [0001] The present invention relates to the field of computer technology, in particular to a point cloud data processing method and device, and a point cloud rendering method and device. Background technique [0002] The performance of graphics processors has developed rapidly compared to the past, but there are still limitations when rendering large-scale and complex scenes. In the rendering process of large-scale complex scenes, the octree technology used to describe the tree-like data structure of three-dimensional space has been widely used. [0003] In the prior art, data caching is usually performed in the form of an octree structure, and the visible nodes and sub-nodes in the octree structure within the view range of the viewing frustum of the current viewpoint are used to render and display the scene. However, when rendering and displaying the scene within the viewing frustum of the current viewpoint, if the visible nodes and sub-nodes contain large ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/00
CPCG06T15/00
Inventor 刘春薛宇飞
Owner NAVINFO
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