Building texture extraction method and device based on inclined image

A technology of oblique image and texture extraction, applied in the field of image recognition, can solve problems such as texture drawing deformation, and achieve the effect of improving work efficiency, accurate texture cropping range, and good texture mapping effect.

Active Publication Date: 2019-01-22
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for extracting building textures based on oblique images, which a

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  • Building texture extraction method and device based on inclined image
  • Building texture extraction method and device based on inclined image
  • Building texture extraction method and device based on inclined image

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] Oblique photography technology is a high-tech developed in the field of international surveying and mapping in recent years. It overturns the previous limitation that orthophotos can only be taken from a vertical angle. Collect images from five different angles including four oblique photography; when using oblique photography technology fo...

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Abstract

The embodiment of the invention provides a building texture extraction method and a device based on an inclined image. The method comprises the following steps: obtaining coordinates of top corner points of a building based on a stereoscopic image pair containing the building, and constructing a building skeleton model based on the top corner points; selecting the top texture image source from vertical image based on distance constraint and location constraint, and selecting the elevation texture image source from inclined image based on angle constraint, location constraint and area constraint, based on the edge detection method and the transform detection straight line method, extracting the top texture from the top texture image source, extracting the facade texture from the facade texture image source, and mapping the top texture and the facade texture to the building skeleton model. Using multi-angle simultaneous image acquisition method, we can obtain more abundant and comprehensive building side texture, so as to improve the model texture information collection, processing method, and improve the speed and quality of modeling.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of image recognition, and in particular to a method and device for extracting building textures based on oblique images. Background technique [0002] Regarding the construction of digital cities at home and abroad, more research is on how to restore the geometric model of the three-dimensional modeling of the building, while the texture of the building is only an additional attribute, and there is less research, while the real texture is to build fine and real buildings. Required for 3D models. The 3D model of the city with real texture can provide people with a high sense of visual reality and provide higher application value for many fields, such as urban planning, disaster assessment, virtual display, urban management and so on. [0003] At present, texture extraction in 3D modeling mainly includes texture library texture acquisition, fusion acquisition of traditional aerial photog...

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Application Information

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IPC IPC(8): G06T7/44G06T7/13G06T7/168G06T15/04G06T17/00
CPCG06T15/04G06T17/00G06T2207/20061G06T7/13G06T7/168G06T7/44
Inventor 庞蕾王勇刘慧张学东张月陈洋张天徐西桂张露
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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