Multi-temporal high-resolution remote sensing image building extraction method based on multi-feature LSTM network

Abstract

The invention discloses a multi-temporal high-resolution remote sensing image building extraction method based on a multi-feature LSTM network, and belongs to the technical field of satellite remote sensing image processing and application. The method aims to solve the problems of low accuracy, high error rate, fuzzy boundary and the like of a building extraction result of an existing method. According to the invention, a plurality of multi-temporal high-resolution No.2 remote sensing images are used as data sources; building spectral characteristics are extracted by using a method based on HSI color transformation; based on a method of combining graph segmentation and conditional random field post-processing, shape features of a building are extracted, based on a Gabor wavelet transform method, texture information features of the building are extracted, and based on a DSBI index method, index features of the building are extracted. A building characteristic set with 60 characteristicwave bands is formed by the extracted spectrum, shape, texture and index characteristics of the multi-temporal building, a manufactured building sample and a label are sent into an LSTM network to obtain a building coarse extraction result, and a final result is obtained after morphological processing.

Description

technical field [0001] The invention belongs to the technical field of satellite remote sensing image processing and application. Background technique [0002] Buildings are the most widely distributed feature category in cities, so buildings are one of the important indicators for evaluating urban economic development. With the continuous development of cities and the increasing number of buildings, the manufacturing materials and appearance of buildings are also changing rapidly, resulting in poor accuracy of building extraction results obtained by traditional methods. For a long time, in order to extract the buildings in the city, the method of manually measuring and drawing the topographic map of urban buildings is mainly used for building extraction. Although this method has certain authenticity, the time cost and labor cost of this method are Huge, and the results of building extraction will vary due to the different cognitive abilities of different surveyors and mapp...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems of low accuracy, high misclassification rate, and blurred borders of building extraction methods using single-temporal high-resolution remote sensing images

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