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Indoor 3D (3-dimensional) dimension measurement method

A technology of three-dimensional dimensions and measurement methods, applied in the direction of measuring devices, instruments, optical devices, etc.

Inactive Publication Date: 2011-11-02
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned problems in the manual measurement of house size, the present invention provides a new method for house size measurement—indoor three-dimensional size measurement method

Method used

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  • Indoor 3D (3-dimensional) dimension measurement method

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Embodiment one: see figure 1 , the indoor three-dimensional dimension measuring method is characterized in that the operation steps are:

[0042] 1) Plan the scanning plane: plan the scanning plane required by the indoor three-dimensional size according to the requirements;

[0043] 2) Establish a coordinate system: construct a coordinate system according to the first point vector and the rotation direction vector of the scanning plane;

[0044] 3) Sampling: Obtain the angle and distance values ​​according to the scanning plan, and obtain the coordinates of the sampling points after converting to the construction coordinate system;

[0045] 4) Fitting: Carry out real-time straight line fitting on the sampling points based on the least square method, use the fitted straight line to judge the real-time wall quality, and at the same time obtain multiple fitting straight line equations of the sides of the plane;

[0046] 5) Solving: Based on the fitted multiple straight...

Embodiment 2

[0047] Embodiment two: This embodiment is basically the same as Embodiment 1, and the specific operation of each step is as follows: first in combination with the attached figure 2 The basic structure of the scanning device shown in this example is described below. The part that controls movement is basically divided into two parts, A and B, as shown in the accompanying drawings. Part B drives part A to rotate horizontally. In part A, 1 is a DC motor, 2 is a laser sensor, and 3 is a photoelectric encoder, which can obtain the angle of rotation. 1 DC motor can drive 2 laser sensors to move vertically, and the photoelectric encoder can record the relative angle of movement. 4 is a stepper motor to control part A to move at a certain angle, 5 is the leveling structure of the whole device, and 6 is a height-adjustable support structure, generally a tripod.

[0048] first as attached figure 1 Shown is the flow chart of the work implementation, where the planned scanning p...

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Abstract

The invention provides an indoor 3D dimension measurement method, which comprises the following steps of: setting up a coordinate system in an indoor 3D space and converting the distances and angles of sampling points into coordinates and describing the coordinates; adopting curve fitting based on the least square method to carry out fitting of the sampling points; according to the fitting results, judging the wall surface quality in the measurement direction in real time, and building up a geometric frame in the indoor space according to the combination of various scanning layers; and completing the measurement according to the corresponding 3D dimensions which need to be calculated. The invention can quickly and precisely complete the indoor 3D dimension measurement (including the irregular geometric measurements) and has high measurement precision and efficiency. In addition, because of not setting strict requirements for machine platforms, hardware, motion control and programming,the measurement method is quite easy to implement and quite applicable to the characteristics of extension, development and utilization of intelligent instruments and related applications.

Description

technical field [0001] The invention relates to an indoor three-dimensional size measurement method, which is a new method for checking and accepting the size and quality of a house when the building is completed. Background technique [0002] After the construction of the house is completed, the house needs to be inspected in accordance with the acceptance specifications of the contract between the two parties and the national building, and the house that meets the construction requirements can be accepted. Among them, the length of each side of the room, the height of each corner and the height of the center of the room need to be measured. Measuring these parameters must meet the relevant requirements and specifications. Until now, the task of making these measurements has been largely done manually. [0003] The method of manual measurement is as follows: surveyors mainly use auxiliary equipment such as hand-held laser range finders and level instruments, and rely o...

Claims

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Application Information

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IPC IPC(8): G01B11/03
Inventor 刘亮王敏邵利明丁婷孙春宇张小根
Owner SHANGHAI UNIV
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