Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Interactive plotting method based on laser-point cloud and panorama image

A mapping method, laser point cloud technology, applied in the field of surveying and mapping, can solve problems such as inability to meet the accuracy requirements of large-scale mapping, low intuitiveness, and affecting mapping efficiency and accuracy

Active Publication Date: 2017-02-22
QINGDAO XIUSHAN MOBILE SURVEYING CO LTD
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current laser point cloud mapping has some obvious problems: the degree of intuition is low, and it takes a certain amount of time to find and confirm the target, especially when the point cloud is incomplete, it requires a certain amount of experience to confirm
Although there are some applications for surveying and mapping based on panoramic images alone, due to the lack of comprehensive use of spatial calibration parameters and spatial attitude information (IMU), the accuracy of the mapping is low, which cannot meet the accuracy requirements of large-scale mapping, and can only be used for Coarse positioning
Some use multiple panoramic images to confirm a collection point, which leads to high operational complexity, and does not use the characteristics of high-precision mapping of laser point cloud, which affects the efficiency and accuracy of mapping

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
  • Interactive plotting method based on laser-point cloud and panorama image
  • Interactive plotting method based on laser-point cloud and panorama image
  • Interactive plotting method based on laser-point cloud and panorama image

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0088] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments: The embodiment takes the calculation of the coordinates of the national flag flagpole in the panoramic image of the courtyard of an office building as an example.

[0089] figure 1 A schematic flow diagram of the method is shown, where the left side is a flow diagram of positioning from panoramic image pixel coordinates to laser point coordinates during forward interaction; the right side is from laser point coordinates to panoramic image pixel positioning during reverse interaction Schematic diagram of the coordinate process; as can be seen from the figure, the forward interaction steps are as follows:

[0090] In the first step, first establish the figure 2 In the image space coordinate system of the panoramic image shown, the panoramic pixel coordinate P r (X,Y) converted to image space coordinates P r '(X,Y,0); where P r The (X...

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 an interactive plotting method based on laser-point cloud and a panorama image. The method includes the steps of forward interactive plotting or / and reverse interactive plotting, wherein in the forward interactive plotting step, pixel coordinates of the panorama image are positioned to laser-point coordinates; in the reverse interactive plotting step, the laser-point coordinates are positioned to the pixel coordinates of the panorama image. During forward interaction, a plotting object is determined in the panorama image, and the characteristics of being visual, clear and definite are achieved. During reverse interaction, a specific laser point is obtained through interaction by means of the buffering method, coordinate conversion parameters are converted into spatial rectangular coordinates, the pixel coordinates of the panorama image are calculated by means of spatial calibration parameters, panorama point GPS coordinates and spatial posture information, and accordingly a direction corresponding to the laser point is displayed in the panorama image.

Description

technical field [0001] The invention belongs to surveying and mapping technology. Background technique [0002] The use of laser point cloud for surveying and mapping can greatly reduce the amount of field work, and has a wide range and high precision, so its application is becoming more and more extensive. However, the current laser point cloud mapping has some obvious problems: the degree of intuition is low, and it takes a certain amount of time to find and confirm the target, especially when the point cloud is incomplete, it requires a certain amount of experience to confirm. At the same time, due to the randomness of the target during mapping, it is easy to cause the omission of mapping elements. This is difficult to meet the needs of mapping and construction, and also restricts the application of laser point cloud in the field of mapping. [0003] The mobile measurement system can quickly acquire laser point clouds and panoramic images. The panoramic images are intui...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/04
CPCG01C11/04
Inventor 刘如飞卢秀山田茂义曲杰卿侯海龙俞家勇
Owner QINGDAO XIUSHAN MOBILE SURVEYING CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com