Unlock instant, AI-driven research and patent intelligence for your innovation.

Fitting algorithm based on point cloud data facade acquisition precision optimization

A point cloud data and façade technology, applied in the field of surveying and mapping, can solve the problem that the façade measurement accuracy is not very high, and achieve the effect of improving the measurement work efficiency, improving the accuracy, and ensuring the accuracy of the results.

Pending Publication Date: 2020-08-21
江苏易图地理信息科技有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two methods are both methods of measuring a straight line through two points, and the accuracy of the final measured line is related to these two points. The selection of these two points is random, so the obtained elevation measurement accuracy is not very high. high

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fitting algorithm based on point cloud data facade acquisition precision optimization
  • Fitting algorithm based on point cloud data facade acquisition precision optimization
  • Fitting algorithm based on point cloud data facade acquisition precision optimization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Describe the present invention in detail below in conjunction with accompanying drawing, as figure 1 shown, including the following steps:

[0027] 1) Calculate the optimal area s of the point cloud rectangle;

[0028] 2) given the width w, calculate the height h of the corresponding rectangle; the corresponding rectangle refers to the rectangle whose area is s and width is w, then the height h=s / w of the corresponding rectangle;

[0029] 3) Use Tsinghua Shanwei software to set the height to h to cut the point cloud data, and observe whether the cut data is a straight surface; if figure 2 shown; that is, observe whether the cropped area is included in the interior of the house, that is, the required measurement area;

[0030] 4) Using the cropped point cloud data combined with the point cloud error G to offset the point cloud data set C;

[0031] 5) De-height-fitting the point cloud in the data set C into a straight line R. Take out the cube point cloud data set C...

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

PUM

No PUM Login to View More

Abstract

The invention discloses a fitting algorithm based on point cloud data facade acquisition precision optimization and relates to the technical field of surveying and mapping, and mainly relates to a fitting algorithm based on point cloud data facade acquisition precision optimization. A fitting algorithm based on point cloud data facade acquisition precision optimization is provided; firstly, pointcloud data of a certain vertical face of a building are utilized, and data of a line of the vertical face on a projection plane are fitted through projection conversion; high-precision data of the building can be obtained after conversion in the same way. The accuracy of the final result is improved by optimizing the algorithm and improving the effective sample rate, so that the measurement working efficiency is improved, the result accuracy is ensured, and a good foundation is laid for the development of subsequent surveying and mapping work.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping, and mainly relates to a fitting algorithm based on point cloud data facade collection precision optimization. Background technique [0002] In the process of digitizing the real world, 3D point cloud data can effectively record the geometric properties and position information of the object surface. Therefore, in the field of engineering surveying and mapping, limited sampling in the point cloud model is usually used to obtain the required measurement data. [0003] In the prior art, due to the low accuracy of the point cloud data of the facade corners, it cannot be collected directly, so the point cloud collection usually uses the following two methods to measure the accuracy of the facade: (1) Based on the two-point measurement method of the wall edge line, such as Figure 7 Among them, the two base points of the measurement are taken as the two × points in the figure; (2) The exte...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06T7/00G01C15/00
CPCG06T7/0002G01C15/00G06T2207/10028
Inventor 李学锡杨必胜赵志强孙涛李涛王山扣居飞王一雷
Owner 江苏易图地理信息科技有限公司