Method and device for mapping urban building models on large scale
A building model and large-scale technology, applied in the direction of image data processing, details involving 3D image data, instruments, etc., can solve the problems of labor consumption, long time period, and low mapping efficiency, so as to reduce cycle time, invest manpower and financial resources Fewer, regular and consistent effects
Pending Publication Date: 2020-08-28
THINVENT DIGITAL TECH CO LTD
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The disadvantage of this large-scale mapping of 3D architectural models is that it is labor-intensive and repetitive work, time-consuming, labor-intensive, high in manpower and financial resources, low in mapping efficiency, and a long time period
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[0035] 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.
[0036] In addition, the term "and / or" in this article is only an association relationship describing associated objects, indicating that there may be three relationships, for example, A and / or B may indicate: A exists alone, A and B exist simultaneously, There are three cases of B alone. In addition, the character " / " in this article generally in...
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The embodiment of the invention provides a method and device for mapping urban building models on a large scale. The method comprises the following steps: extracting building contour vector data froma remote sensing image, and matching the building contour vector data with a to-be-mapped three-dimensional building model; carrying out the first cutting of the remote sensing image through the matched building contour vector data, and obtaining a building image after the first cutting; cutting for the second time along the edge of the building image cut for the first time, and stretching the building image cut for the second time until the edge of the building image coincides with the edge of the building image cut for the first time to obtain a to-be-pasted building image; and fitting the to-be-fitted building image with the matched three-dimensional building model. In this way, large-batch three-dimensional building model mapping can be achieved, the input manpower and financial resources are small, the period of large-batch three-dimensional building model mapping is shortened, a mapping picture is close to a real image, and the processing regularity and consistency are high.
Description
technical field [0001] Embodiments of the present invention generally relate to the fields of image processing and three-dimensional city modeling, and more specifically, relate to a method and device for massaging city building models with textures. Background technique [0002] The 3D city model is a 3D model made on the basis of 2D geographic information. This system can be used to analyze the natural elements and construction elements of the city. Users can get a real and intuitive feeling of the virtual city environment through interactive operations. [0003] In 3D city modeling, it is often necessary to map a large number of architectural models. The existing solution is mainly to use a camera to take pictures to obtain the appearance of the building, and then map the 3D architectural model (white model). The disadvantage of this large-scale mapping of 3D architectural models is that it is labor-intensive and repetitive work, time-consuming, labor-intensive, high in m...
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Login to View More IPC IPC(8): G06T19/20
CPCG06T19/20G06T2200/04Y02A30/60
Inventor 涂旭青刘波周金平
Owner THINVENT DIGITAL TECH CO LTD