China land noctilucence remote sensing classification accuracy evaluation method using two-stage sampling model

Abstract

The invention relates to a China land noctilucence remote sensing classification accuracy evaluation method using a two-stage sampling model. The method comprises the following steps: S1, extracting the built-up areas of China land from NPP/VIIRS series data, and getting an unverified extraction result; S2, building a two-stage sampling model, sampling evaluation areas, and getting credible inspection data sets; and S3, verifying preliminary extraction of noctilucence data area by area through an error matrix verification method, and finally, getting accuracy evaluation of the classification results of all noctilucence data. Through the noctilucence remote sensing classification accuracy evaluation method using a two-stage sampling model, systematic and effective accuracy evaluation of the classification results of large-area noctilucence remote sensing data is completed, and the quality of the noctilucence remote sensing city and town extraction result is inspected. The problem that there are too few verification sets and incomplete evaluation parameters in previous technologies is solved. A comprehensive and accurate verification result is obtained.

Description

technical field [0001] The invention relates to the technical field of remote sensing image quality inspection, in particular to a method for evaluating classification accuracy of China's land luminous remote sensing classification using a two-level sampling model. Background technique [0002] Night light remote sensing data can detect low-intensity lights from urban lights and even small-scale residential areas, and distinguish them from dark rural backgrounds, indirectly reflecting the distribution of cities and towns, and providing new insights into large-scale urban detection research. train of thought. However, due to factors such as the spillover effect of night light, extracting cities and towns based on night light may lead to problems such as the urban area extraction result being larger than the actual value. Therefore, the quality of the extraction results must be verified before application. [0003] Traditional verification methods, for example, in the study o...

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Problems solved by technology

[0004] In the past, there were some problems in the accuracy evaluation of the extraction results of luminous remote sensing lighting areas: (1) The selection of the verification set was too small, the distribution method was unreasonable, and it was not representative compared with the overall extraction area; (2) The selected verification evaluation indicators were too few and not enough. Comprehensive, cannot really reflect the extraction results; (3) The evaluation method is not systematic, and it cannot explain the spatial distribution of the extraction results just by comparing with the national stati...

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