A method and device for extracting mountain landscape buildings based on high-resolution remote sensing images

Abstract

The invention discloses a method and equipment for extracting mountain landscape buildings based on high-resolution remote sensing images. The method includes: segmenting the remote sensing image, using NDVI to extract the non-vegetation area in the remote sensing image; segmenting the non-vegetation area, extracting the building area through NDBI; segmenting the building area again, and calculating the normalized shadow of each patch Building index NSBI; calculate the NSBI discrimination of each patch in the non-vegetated area and set the discrimination threshold, based on which the landscape architecture area is extracted. The present invention reduces the influence of the large-area shadow area in the shaded area of ​​the remote sensing image on the extraction result by introducing the near-infrared band of the spectrum of the remote sensing image that has a significant difference between the shadow and the non-shade. By enlarging the NSBI relative difference between the segmented landscape patch and the surrounding patches, expanding the relative spectral difference between the landscape architecture in the bright area, the landscape architecture in the shadow area, and the shadow interval, reducing the probability of spectral confusion, so that the landscape architecture and its adjacent patches can be clearly distinguished. distinguish.

Description

technical field [0001] The invention belongs to the field of digital landscape site exploration, and in particular relates to a method and equipment for extracting mountain landscape buildings based on high-resolution remote sensing images. Background technique [0002] It is of great significance to obtain the building area and spatial distribution of scenic spots conveniently and accurately for the development of tourism resources, landscape evaluation of scenic spots, and management of existing building resources. Compared with traditional field surveys, remote sensing technology has irreplaceable advantages of high frequency, wide coverage, and low cost. It provides an important scientific dimension and quantitative analysis means for the development of contemporary digital landscapes, and at the same time improves the study of landscape characteristics from sensation to Perception, from qualitative to quantitative, has technical significance for improving the quantitati...

AI Technical Summary

Problems solved by technology

This method has certain advantages for landscape buildings with obvious rectangular shapes in a small area, but it relies on the rectangular shape features of buildings, and the process is cumbersome and the algorithm cost is high. not applicable

In addition, in the prior art, there are many studies on the microscopic level of the single building in the scenic area, and there is a lack of extraction and analysis of the relationship between the architectural landscape elements in the scenic area and the relationship between them at the macro level.

[0004] Under the current construction level and conditions, the lack of rapid, accurate and practical guiding significance for the extraction of surface landscape elements of landscape garden planning has become one of the key factors restricting the development of scientific design of regional landscape garden planning to a higher level.

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