Building feature extraction method and system based on three-dimensional modeling and storage medium

A three-dimensional modeling and feature extraction technology, applied in character and pattern recognition, image data processing, instruments, etc., can solve the problems of manpower and material resources, lack of flexibility, positioning and segmentation, and reduce the difficulty of feature extraction.

Pending Publication Date: 2020-03-06
深圳新视达视讯工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of supervision method through aerial photography such as satellite remote sensing, ordinary aerial remote sensing, drones and manual observation not only consumes a lot of manpower and material resources, but also has a long data acquisition cycle and lacks flexibility, so it is not suitable for short-term and high-f

Method used

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  • Building feature extraction method and system based on three-dimensional modeling and storage medium
  • Building feature extraction method and system based on three-dimensional modeling and storage medium
  • Building feature extraction method and system based on three-dimensional modeling and storage medium

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Experimental program
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Embodiment 1

[0055] Embodiment 1: This embodiment provides a method for extracting building features based on three-dimensional modeling, such as figure 1 Shown is the basic flowchart of the above-mentioned building feature extraction method based on three-dimensional modeling, including the following steps:

[0056] S10: Obtain the orthophoto image and the oblique image, and preprocess the image;

[0057] Specifically, image preprocessing includes checking and eliminating unqualified images, image color uniformity processing, etc. The main purpose of image preprocessing is to eliminate irrelevant information in the image, restore useful real information, and enhance the detectability of relevant information and minimize data, thereby improving the reliability of feature extraction, image segmentation, matching and recognition.

[0058] S20: Carry out three-dimensional modeling to the image acquired in S1;

[0059] Specifically, it is a three-dimensional model made on the basis of two-dime...

Embodiment 2

[0062] Embodiment 2: This embodiment provides a method for extracting building features based on three-dimensional modeling, such as figure 2 Shown is the overall flowchart of the above-mentioned building feature extraction method based on three-dimensional modeling. This embodiment is an embodiment carried out on the basis of Embodiment 1. Specifically, it includes the following steps:

[0063] S40: building area filling;

[0064] S50: building feature point recognition.

Embodiment 3

[0065] Embodiment 3: This embodiment provides a specific method for three-dimensional modeling of images, such as image 3 shown, including the following steps:

[0066] S21: UAV positive photography and oblique photography image input;

[0067] Preferably, the data obtained by UAV surveying and mapping is firstly images, and there are many ways to obtain images. At present, there are mainly two types of UAVs: orthophoto and oblique photography.

[0068] It is understandable that when shooting at high altitude, aerial photogrammetry has occlusion problems. Oblique photography is a kind of method of multi-angle photography. In order to obtain the camera posture adjustment in the camera array combination on different sides of more ground objects except the top, the purpose is that the stereo image has no dead angle for the same name point.

[0069] It is understandable that oblique photography technology subverts the previous limitation that orthophotos can only be taken from ...

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Abstract

The invention relates to a building feature extraction method and system based on three-dimensional modeling and a storage medium. The building feature extraction method based on three-dimensional modeling comprises the steps of acquiring orthoimage and inclined images and preprocessing the images; performing three-dimensional modeling on acquired images. The invention also comprises a building feature extraction system based on three-dimensional modeling, and the system comprises an obtaining unit which is used for obtaining orthoimage and an inclined images, and preprocessing the images; anda processing unit used for carrying out three-dimensional modeling on the preprocessed images. According to the invention, a technical means of feature extraction, filling and identification after three-dimensional modeling of the images is adopted. The technical problems that in the prior art, it is difficult to extract a static target through the two-dimensional images, and an image analyzing and processing method of a moving target cannot be used for positioning and segmenting a static building are solved. The beneficial effects of reducing the difficulty of static target feature extraction and applying the image analysis and processing method of the moving target to positioning and segmentation of the static building are achieved.

Description

technical field [0001] The invention relates to a high-precision real-time three-dimensional reconstruction method at a mobile terminal, in particular to a building feature extraction method, system and storage medium based on three-dimensional modeling. Background technique [0002] In my country's urban management work, urban construction supervision is an important function, and it is responsible for the important task of comprehensive supervision of urban buildings. In order to grasp the changes in the city and implement effective management, the urban authorities, including planning, design, construction and other departments, urgently need to dynamically grasp the information of the city's building area and land area. With the rapid development of urbanization in our country, due to various reasons, there are a large number of illegal buildings in urban buildings. How to quickly and accurately obtain urban building information is a challenge faced by urban construction...

Claims

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Application Information

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IPC IPC(8): G06K9/46G06K9/34G06K9/62G06T7/11G06T7/155G06T7/187
CPCG06T7/155G06T7/11G06T7/187G06T2207/10012G06V10/267G06V10/40G06F18/23213G06F18/29
Inventor 周伟周琛郑尧周凯刘磊
Owner 深圳新视达视讯工程有限公司
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