City vitality measurement and characterization method and system based on multi-source big data

Abstract

The invention provides a city vitality measurement and characterization method and system based on multi-source big data, and the method comprises the steps: carrying out preprocessing of streetscapepictures, interest point data and social media sign-in data in a research region, and under the condition of a unified coordinate system, carrying out space fusion on different types of data and fusing and unifying the data into the same research unit; designing and constructing measurement and quantitative indexes for quantitatively measuring city vitality based on street view pictures, interestpoints and social media sign-in from subjective and objective dimensions, and calculating influence weights of city vitality measurement indexes represented by different data by adopting adaptive weighting based on the three big data; and finally obtaining comprehensive city vitality index and carrying out visual expression. According to the method, rapid, accurate, large-scale and small-scale urban vitality measurement and characterization are achieved based on multi-source big data, and the problems that in the prior art, a single data source is used for characterizing the urban vitality singly and biased are solved.

Description

technical field [0001] The invention relates to the technical field of urban planning, in particular to a method and system for measuring and characterizing urban vitality based on multi-source big data. Background technique [0002] At present, China is in the stage of rapid urbanization development. Blind, extensive, and ignoring spatial quality of urban expansion is prevalent, leading to problems such as traffic congestion, urban quality degradation, and regional development imbalances. It has become a new demand for the development of the current era to build an urban development model of "people-oriented, urban and rural planning, green economy, and livable harmony", and to further promote the construction of new urbanization and ecological civilization. Urban vitality research can evaluate the current status of vitality within a city, effectively test the quality and distribution of urban space, and provide a new perspective for optimizing the layout and form of cities...

AI Technical Summary

Problems solved by technology

The time-consuming nature of on-site surveys determines that this method cannot be used for large-scale research. However, the current large-scale research on vitality has a large granularity and is difficult to be accurate to the street scale.

These studies are insufficient to address the current rapidly changing street space

[0005] Second, previous studies have relied on a single source of urban data to map urban vitality, and while urban big data offer unprecedented opportunities for urban research, they come with potential bias issues in terms of penetration population, spatial coverage, or sampling methods. May be misleading to urban researchers and urban planners

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