Population calculation method and system based on high-precision building data
A calculation method and technology of a calculation system, applied in the computer field, can solve problems such as low reliability and poor precision, and achieve the effect of accurate and reliable population data support
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Embodiment 1
[0061] Compared with the existing population distribution research technology, this embodiment proposes a population calculation method based on high-precision building data. This embodiment considers the relationship between building type, purpose and population density. According to building type, The purpose is to subdivide the buildings in the divided area, calculate the volume of different types of buildings, and then build a population calculation model based on the volume of the buildings, so as to obtain the population distribution in the area, and provide information for population distribution research. More accurate and reliable data support.
[0062] like figure 1 As shown, the method of the present embodiment includes the following steps:
[0063] 1. Obtain basic building data in the target area; the target area includes n divided areas, where n is a positive integer greater than or equal to 3.
[0064] The divided areas in this embodiment can be determined acco...
Embodiment 2
[0091] This embodiment proposes a population calculation system based on high-precision building data. Such as figure 2 As shown, the system of this embodiment includes a data acquisition module, a data preprocessing module, a volume calculation module and a population calculation module.
[0092] The data acquisition module of this embodiment uses web crawler technology to grab urban building vector data from Baidu map or Tiandi map, and non-urban building data is interpreted through remote sensing images or intercepted and called from Tiandi map residential service. Image service vectorization supplementation, and then obtain the basic data of buildings in the target area; the target area includes n divided areas, where n is a positive integer greater than or equal to 3;
[0093] The data preprocessing module of this embodiment is used to obtain and preprocess building data containing attribute information based on building basic data, and extract building data of resident...
Embodiment 3
[0116] This embodiment calculates and verifies the population calculation model obtained in the above embodiments, and the specific process is as follows:
[0117] 1. Error analysis. Calculate the estimated population and statistical population of the target area, and use the formulas (6) and (7) to calculate the relative population error and the average relative error:
[0118]
[0119]
[0120] In the formula, E is the population relative error, MRE is the average relative error, pe is the demographic value, ps is the estimated population value calculated according to the model, i represents the i-th region, and n represents the number of regions.
[0121] 2. Simulate population generation in the target area. According to the volume of a single building and the population space coefficient of the corresponding residential building, the formula (4) is used to estimate the simulated population distribution in the target area.
[0122] There are 3 towns, 5 townships and...
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