Point cloud and grid partitioning method in aerial photography terrain three-dimensional reconstruction system

A technology of 3D reconstruction and triangular mesh, which is applied in 3D image processing, image data processing, instruments, etc., can solve problems such as the failure to generate DOM and DSM normally, excessive data volume, etc., and achieve good intra-block and inter-block relationships , lower the hardware threshold, and reduce the effect of merging errors
CN110379022APending Publication Date: 2019-10-25西安因诺航空科技有限公司
3 Cites 12 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
西安因诺航空科技有限公司
Publication Date
2019-10-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a point cloud and grid partitioning method in an aerial photography terrain three-dimensional reconstruction system. According to the method, the problem that important modulessuch as point cloud densification, triangular gridding and texture mapping in a three-dimensional reconstruction system cannot be processed due to large data volume of point cloud is solved by partitioning three-dimensional data generated by aerial photography of large-scale scene terrain. According to the method, layer-by-layer segmentation is carried out on three-dimensional data in stages according to the memory use condition in a module, point cloud is partitioned before point cloud densification and triangular meshing, and then triangular meshes are partitioned before texture mapping processing. The hardware threshold of operation of a three-dimensional reconstruction system is reduced, the intra-block and inter-block relationship after partitioning can be well reserved, and a solidfoundation is laid for generating a large-scene high-resolution digital orthoimage (DOM) and a digital surface model (DSM).
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the application field of unmanned aerial photography data, and in particular relates to a point cloud and grid block method in an aerial photography terrain three-dimensional reconstruction system. Background technique

[0002] With the country's strict control over drone airspace, the safety and stability of industrial drones have been greatly improved. Immediately after that, industrial-level applications based on drones emerged in an endless stream, among which aerial surveying and mapping and industrial inspection were the most prominent. These applications all have the requirements of large-scene 2D map stitching and 3D terrain reconstruction. However, due to the characteristics of high image resolution and large number of images in such projects, the realization of scene reconstruction not only depends more on the hardware performance of the PC platform, but also Higher requirements are also put forward for the algorithm...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More