Quick estimation and three-dimensional display method for visual green land areas of city floors

A floor and green space technology, applied in the field of geographic information science virtual reality, can solve the problems of slow data update speed, heavy workload, lack of visual quality of urban green space landscape, etc., and achieve the effect of reducing labor cost and labor cost.

Inactive Publication Date: 2017-05-10
EAST CHINA NORMAL UNIV
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows us to create an image that shows how different parts of our world are covered within one area or region called Green Space (GSC). By analyzing this data we aimed at finding ways to improve environmental planning systems such as airplanters and landfill management companies' efficiency. Overall, it offers technical improvements over existing methods like manual surveys and computer simulations.

Problems solved by technology

This patents discusses various ways to study how people perceived their environment better when they see things like trees growing around them rather than just looking upwardly from above. However, these techniques only involve studying specific aspects of environmental factors while ignoring others important ones. Additionally, there exist different types of sensors used during indoor environments with varying levels of importance towards human wellness issues. These include color displays, cameras, radar systems, and light meters. Overall, conventional analyzes based solely upon objective evaluations may lead to inconsistently high errors due to variations between individuals who share similar experiences.

Method used

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  • Quick estimation and three-dimensional display method for visual green land areas of city floors
  • Quick estimation and three-dimensional display method for visual green land areas of city floors
  • Quick estimation and three-dimensional display method for visual green land areas of city floors

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Embodiment

[0049] Refer to figure 1 , Taking the Lujiazui area of ​​Shanghai as the research object, figure 2 The building digital surface model and vegetation distribution data used in this embodiment. The building digital surface model data refers to raster data whose pixel values ​​represent elevation and land use types belong to construction land.

[0050] Step 1: Invoke the building layered modeling algorithm, extract the base contour and automatic 3D modeling of the building digital surface model data, and generate the corresponding Shp layer and Multipatch model.

[0051] Specific operations include:

[0052] i) Base contour extraction: Set the 3.5m elevation threshold T=3.5m according to the municipal planning, use the threshold segmentation method, according to the formula Obtain a binary raster image; then vectorize the binary raster image, that is, through boundary line tracking, remove redundant nodes (Node), organize the raster data into multiple polygons (Polygon) that record the c

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Abstract

The invention discloses a quick estimation and three-dimensional display method for visual green land areas of city floors. The method comprises the following steps of 1) calling a building layered modeling algorithm to perform base contour extraction and automated three-dimensional modeling on building digital surface model data so as to generate corresponding Shp graphic layer and Multipatch model; 2) calling a floor visual green land estimation algorithm to perform ornamental green land area automatic estimation on extracted building floors; 3) updating attribute fields of a building three-dimensional model and a building base contour model, and performing layered color-setting display. According to the method, a vertical city visual green land analysis concept is innovatively proposed, automated estimation and quick modeling display functions are realized at the same time, and manpower cost of actual measurement is reduced; and the method meets partial demands of people such as city residents, city planners, decision makers, house dealers and the like in related aspects of green landscapes, and has a certain social benefit and economic value.

Description

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Claims

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Application Information

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Owner EAST CHINA NORMAL UNIV
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