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Extraction Method of Roof Profile from Remote Sensing Image Based on Building Base Vector

A remote sensing image and base vector technology, applied in the field of remote sensing image processing, can solve complex building extraction and change detection problems, affect the accuracy and reliability of detection results, etc., achieve important market value, reduce production costs, and improve production efficiency Effect

Active Publication Date: 2020-01-24
WUHAN UNIV +1
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Problems solved by technology

However, these methods have great limitations, because factors such as building projection differences in high-resolution remote sensing images will cause large geometric displacements and shadow occlusion problems, making building extraction and change detection problems more complex, affecting detection results precision and reliability

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  • Extraction Method of Roof Profile from Remote Sensing Image Based on Building Base Vector
  • Extraction Method of Roof Profile from Remote Sensing Image Based on Building Base Vector
  • Extraction Method of Roof Profile from Remote Sensing Image Based on Building Base Vector

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Embodiment Construction

[0035] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0036] The present invention proposes to extract the roof outline of the remote sensing image by using the existing building base vector image spot. In the remote sensing image, there is a certain geometric displacement between the roof outline and the corresponding building base map spot due to factors such as building projection difference. The present invention proposes to use a contour constraint template corresponding to the contour polygon of the pattern to search within a preset projection difference range based on the building base pattern to obtain the roof contour of the remote sensing image.

[0037] Such as figure 1 As shown, a method for extracting roof outlines from remote sensing images based on building base vectors provided by the embodiment includes the following steps:

[0038] Step 1: Use the exis...

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Abstract

The invention discloses a method for extracting the roof contour of a remote sensing image based on a building base vector, which includes obtaining a contour polygon by using an existing building base vector spot; generating a contour constraint template of a building roof to be matched according to the contour polygon; For the remote sensing image to be extracted, select the image features that conform to the characteristics of the building; based on the similarity measure, use the contour constraint template and image features, use the matching optimization method to search for the best matching position, and obtain the building roof contour image and other steps. The technical scheme of the invention realizes the contour matching between the building base vector and the roof image in the remote sensing image, can automatically obtain the building roof in the remote sensing image, and can also quickly detect the changes of existing buildings, and further carry out dynamic monitoring of illegal buildings in the future is of great significance.

Description

technical field [0001] The invention relates to the technical field of remote sensing image processing, in particular to a method for extracting roof outlines of remote sensing images based on building base vectors. Background technique [0002] As an important ground object, buildings are a research hotspot and difficulty in the field of photogrammetry and remote sensing for their automatic identification, location extraction and change detection. Among them, the high-resolution remote sensing image building change detection technology compares and analyzes two high-resolution remote sensing images to find out the change area of ​​the building. This technology is widely used in geospatial information services, and has important application value and commercial value in land cover change monitoring, environmental change dynamic monitoring, natural disaster monitoring, illegal building investigation and land resource investigation, etc. [0003] Generally speaking, the refle...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/46
CPCG06V20/176G06V10/443
Inventor 胡翔云宫金杞胡艳丁忆李朋龙张泽烈徐永书陈静刘金龙李莉
Owner WUHAN UNIV
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