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House wall line identification method and system and computer readable storage medium

A recognition method and wall technology, applied in the field of surveying and mapping, can solve problems such as low efficiency, unstable measurement environment, and low drawing accuracy, and achieve the effect of removing noise and improving drawing efficiency and accuracy

Pending Publication Date: 2021-01-08
杭州今奥信息科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Field measurement method, which has high labor costs, unstable measurement environment, and is easily affected by external factors such as weather;
[0005] Image measurement method, which relies on the three-dimensional model of the premises, manually judges the specific position of the building surface and draws the corresponding line drawing. Has a high degree of fit, low drawing accuracy and low efficiency

Method used

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  • House wall line identification method and system and computer readable storage medium
  • House wall line identification method and system and computer readable storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1, a kind of identification method of house wall line, such as figure 1 shown, including the following steps:

[0060] S100. Obtain a trend line of the target wall, determine a target range based on the trend line, extract feature points within the target range, and obtain first feature data;

[0061] The trend line, for example, can be converted into a two-dimensional drawn line;

[0062] S200. Perform fitting based on the first feature data to obtain a first fitting line;

[0063] In this embodiment, the first fitting line is generated based on all the feature points within the target range through the automatic target range of the trend line, thereby eliminating the influence of different drawn lines on the same wall on the obtained wall line.

[0064] The fitting method in this embodiment is to obtain a two-dimensional straight line by fitting based on the X-axis coordinates and Y-axis coordinates of the relevant feature points, for example, the least s...

Embodiment 2

[0118] Embodiment 2, a kind of recognition system of house wall body line, such as figure 2 shown, including:

[0119] The feature extraction module 100 is used to obtain the trend line of the target wall, determine the target range based on the trend line, extract the feature points located in the target range, and obtain the first feature data;

[0120] The first fitting module 200 is configured to perform fitting based on the first feature data to obtain a first fitting line;

[0121] The second fitting module 300 is configured to extract several feature points closest to the first fitting line from the first feature data based on a preset screening ratio to obtain second feature data, based on the first feature data Fitting the two characteristic data to obtain the second fitting line;

[0122] The third fitting module 400 is configured to extract corresponding feature points from the second feature data based on the point-by-section method to obtain third feature data,...

Embodiment 3

[0131] Embodiment 3. A computer-readable storage medium stores a computer program, and when the program is executed by a processor, the steps of the method described in Embodiment 1 are implemented.

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Abstract

The invention discloses a house wall line recognition method and system and a computer readable storage medium, and the method comprises the following steps: obtaining a trend line of a target wall, and extracting first feature data based on the trend line; fitting based on the first feature data to obtain a first fitting line; extracting second feature data from the first feature data based on atripartite elimination algorithm, and fitting based on the second feature data to obtain a second fitting line; extracting third feature data from the second feature data based on a segmentation pointtaking method, and fitting to obtain a third fitting line from the third feature data; extracting fourth feature data from the third feature data, fitting a fourth fitting line based on the fourth feature data, and taking the fourth fitting line as a wall line of the target wall. According to the method, after the first feature data is automatically obtained based on the trend line, noisy pointsare removed through four times of linear fitting, so that the corresponding wall line is quickly and accurately generated, and the efficiency and precision are effectively improved.

Description

technical field [0001] The present invention relates to the field of surveying and mapping, in particular to a method, system and computer-readable storage medium for identifying house wall lines. Background technique [0002] With the continuous development and maturity of oblique photogrammetry technology, fast and high-precision 3D modeling using UAV images is widely used in surveying and mapping and other fields. [0003] Currently, there are two main aspects of premises measurement methods: [0004] Field measurement method, which has high labor costs, unstable measurement environment, and is easily affected by external factors such as weather; [0005] Image measurement method, which relies on the three-dimensional model of the premises, manually judges the specific position of the building surface and draws the corresponding line drawing. It has a high degree of fit, low drawing accuracy and low efficiency. Contents of the invention [0006] Aiming at the shortco...

Claims

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Application Information

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IPC IPC(8): G06T11/20
CPCG06T11/203
Inventor 何玉生杨江川周旺华问静怡方鹏
Owner 杭州今奥信息科技股份有限公司