Digital-city-model-based virtual roaming method for achieving lossless data interaction at display end based on

A digital city and model realization technology, applied in the field of virtual roaming, can solve problems such as unusable, model-shaved, and unapplied holographic interaction scenarios, and achieve the effect of reducing the amount of calculation and ensuring timeliness and accuracy.

A digital city and model realization technology, applied in the field of virtual roaming, can solve problems such as unusable, model-shaved, and unapplied holographic interaction scenarios, and achieve the effect of reducing the amount of calculation and ensuring timeliness and accuracy.

CN108919944AActive Publication Date: 2018-11-30成都中绳科技有限公司
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  • Digital-city-model-based virtual roaming method for achieving lossless data interaction at display end based on

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Experimental program
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Embodiment 1

[0033] Such as figure 1 As shown, the virtual roaming method based on the digital city model provided in this embodiment to realize data lossless interaction on the display terminal includes the following steps.

[0034] S101. Construct a three-dimensional virtual scene of urban space based on the digital city model.

[0035] In the step S101, the digital city model refers to a three-dimensional city model for constructing a digital city, which may, but is not limited to, include various data such as three-dimensional structure models of buildings, texture maps of buildings, digital elevation models, and ground texture images. . The 3D city model can be divided into 3D model of topography, 3D model of existing buildings and 3D model of planning and design according to the classification of attributes. Different model categories have various ways of collecting and obtaining basic data, and the methods of making models and technological processes Also diverse.

[0036]For the...

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Abstract

The invention relates to technical field of computer vision and discloses a digital-city-model-based virtual roaming method for achieving lossless data interaction at a display end. The digital city virtual roaming method has the advantages that massive-byte lossless data interaction between a background database and the front display end can be achieved, that is to say, digital city viewing angleimage data collected according to different viewing points and sight lines is stored in the background database, operation processing such as real-time rendering does not need to be performed on three-dimensional virtual scenes at a background server or the front display end during virtual roaming, and corresponding viewing angle image data can be transmitted from the background database to the front display end for display in a lossless manner only by appointing viewing points and viewing angles; due to the fact that the collected original data does not need to be reduced in the whole process, the original data representing physical detail information can be retained in the display data, and visual output timeliness and accuracy are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of computer vision, and in particular relates to a virtual roaming method for realizing data lossless interaction on a display terminal based on a digital city model. Background technique [0002] Computer vision technology (Computer Vision, CV for short) is one of the most popular researches at present. It becomes an image that is more suitable for human eyes to observe or sent to the instrument for detection. It is a multidisciplinary study covering computer science (graphics, algorithms, theoretical research, etc.), mathematics (information retrieval, machine learning), engineering (robotics, NLP, etc.), biology (neural science) and psychology. Science (cognitive science), etc. [0003] Digital city refers to the use of spatial information to build a virtual platform to obtain and upload urban information related to urban natural resources, social resources, infrastructure, humanities, economy, etc. in ...

Claims

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Application Information

Patent Timeline
30 Nov 2018
Publication
CN108919944A
IPC
G06F3/01; G06T17/00; G06T19/00; G06T15/00
CPC
G06F3/011; G06T15/005; G06T17/00; G06T19/006
Inventors
陈政权; 周筠