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Algorithm for Constructing House Outline Based on Triangulation

A technology of triangulation ranging and contouring, which is applied to measuring devices, instruments, and optical devices, etc., and can solve the problems of low precision and inconvenience in manually measuring the size of houses.

Inactive Publication Date: 2019-11-26
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

[0003] The present invention aims to develop a construction algorithm of a house outline on the basis of a three-dimensional laser scanner, through which the outline of a house can be automatically constructed and used to measure the size of the house, aiming to solve the inconvenience of manually measuring the size of the house in interior decoration , the problem of low precision

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  • Algorithm for Constructing House Outline Based on Triangulation
  • Algorithm for Constructing House Outline Based on Triangulation
  • Algorithm for Constructing House Outline Based on Triangulation

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Embodiment Construction

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] First of all, the present invention designs a three-dimensional laser scanner, as shown in the attached figure 1 As shown, it includes a horizontal turntable 101 , an elevation turntable 102 , two in-line lasers 103 , 104 and a receiving device 105 . The horizontal turntable 101 can be supported by a tripod, the elevation turntable 102 is installed on the horizontal turntable 101 , and the in-line lasers 103 and 104 and the receiving device 105 are installed on the elevation turntable 102 . The two inline lasers 103, 104 include a vertical inline laser and a horizontal inline laser.

[0041] Then, on the basis of the designed 3D laser scanner, a house contour detection algorithm is developed, through which the house contour can be automatically detected and the point cloud image of the house contour can be generated.

[0042] The constru...

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Abstract

The invention provides a house outline construction algorithm based on triangular distance measurement. A horizontal one-word linear laser and a vertical one-word linear laser of a three-dimensional laser scanner are used to project on a wall surface. Because of a shade horn line of the wall surface, laser rays are modulated into a broken line form. Through an image acquired by an industrial camera in a receiving device, the algorithm is designed to detect turning points of broken lines. Image coordinates of the turning points are substituted into a mathematical model of triangular distance measurement to calculate three-dimensional coordinates of the turning points so that an outline of the wall surface can be constructed. The one-word linear laser of horizontal projection is used to construct a vertical outline of the wall surface. The one-word linear laser of vertical projection is used to construct a horizontal outline of the house. Through a planned scanning path, construction ofthe house outline is realized, and acquired point cloud can be introduced into three-dimensional drawing software of CAXA and the like so that a house size can be directly measured. Problems that manual size measurement is not convenient and precision is low during indoor decoration work are solved.

Description

technical field [0001] The invention relates to the technical field of building measurement, in particular to a building outline construction algorithm. Background technique [0002] In traditional interior decoration, it is necessary to measure the size of the wall, and the size obtained through the measurement can be used for cost accounting, as well as the budget for decoration materials. There are many inconveniences in manually measuring the dimensions of houses, especially large houses. Therefore, measuring the size of the house through automated instruments can improve the efficiency and improve the accuracy of the measurement. The invention develops the building algorithm of the house outline on the basis of the designed three-dimensional laser scanner, and realizes the measurement of the house size. SUMMARY OF THE INVENTION [0003] The invention aims to develop an algorithm for building the outline of a house on the basis of a three-dimensional laser scanner, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
CPCG01B11/24
Inventor 姜欣单鹏飞
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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