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Long-range impervious surface percentage change amount rapid drawing technology

A mapping technique and percentage technique, applied in image data processing, 2D image generation, instruments, etc., to achieve the effect of eliminating the interference of data noise, strong practicability, simple and fast method

Active Publication Date: 2018-10-09
FUZHOU UNIV
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the research related to remote sensing monitoring of impervious surface, the focus is still on remote sensing classification of impervious surface percentage in different years, and there are few technical methods to directly and automatically obtain the change of impervious surface percentage over the years

Method used

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  • Long-range impervious surface percentage change amount rapid drawing technology
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  • Long-range impervious surface percentage change amount rapid drawing technology

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] Please refer to figure 1 , the present invention provides a kind of large-scale impermeable surface percentage variation rapid mapping technology, it is characterized in that:

[0045] Step S1: From the two aspects of the source and destination of the surface cover change in the study area, five remote sensing indices were sequentially selected: vegetation index OSAVI, impervious surface index BCI, bare soil index RIBS, water body index LSWI, and night light index DMSP / OLS. Establish a time series data set of remote sensing index over the years;

[0046] Step S2: According to the time-series data set of the remote sensing index over the years, using the Sen's slope method, calculate the change trend of the five remote sensing indices;

[0047] Step S3: According to the change trend of the remote sensing index, extract the area where the imperme...

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Abstract

The invention discloses the long-range impervious surface percentage change amount rapid drawing technology. According to the method, the direction of change trends of the vegetation index, the impervious surface index, the bare soil index, the water body index and the night light index is utilized, the increased area of the impervious surface is determined, based on the Sen's slope of a variety of remote sensing index trends in combination with training data, the random forest method is utilized, the impervious surface percentage change amount is obtained, and lastly, an impervious percentagechange amount spatial distribution map is obtained. The method is advantaged in that through integrating the surface coverage change type source and the direction, characteristic parameters presenting the impervious surface percentage change amount are extracted, for the established technical method, the threshold is set without human intervention, fast and automatic advantages are realized, themethod be well applied to wide-range information acquisition, and good interpretability and the geographical significance are realized.

Description

technical field [0001] The invention relates to a rapid charting technique for the percentage change of the impermeable surface in a large range. Background technique [0002] With the acceleration of urbanization, remote sensing monitoring of impervious surfaces has attracted much attention. Rapid monitoring of impervious surfaces using remote sensing technology has made good research progress. Aiming at the remote sensing image characteristics of impervious surfaces in different bands, a variety of impervious surface indices have been proposed, such as BCI (Biophysical Composition Index), IBI (Index-based Built-up Index), NDISI (Normalized Difference Impervious Surface Index) )Wait. These remote sensing indices can effectively highlight the distribution of impervious surfaces and play an important role in remote sensing monitoring of impervious surfaces. [0003] Using high-resolution remote sensing image data to carry out mapping of impervious surfaces has achieved rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/20G06N99/00
CPCG06T11/206
Inventor 邱炳文卢迪菲黄莹泽
Owner FUZHOU UNIV