Building extraction method and device, terminal equipment, and readable storage medium

Abstract

The invention is suitable for the technical field of image processing, and provides a building extraction method. The method comprises the following steps: obtaining target image data (including first data and high-resolution image data); preprocessing the target image data; performing image processing on the preprocessed target image data, and obtaining an initial candidate region and an adaptive segmentation result; carrying out fusion processing on the initial candidate region and the self-adaptive segmentation result to obtain a building candidate region; finally, optimizing the building candidate region according to the initial candidate region to obtain a building extraction result. The invention is advantageous in that, by fusing the first data and the high-resolution image data to obtain a recognition result of a building, and in combination with the characteristics that the first data provides elevation information relative to the ground and is not easily influenced by environmental factors and the high-resolution image data provides rich spectral features and texture information, the robustness of the method, the precision of recognition results, and the stability of high-precision recognition results are improved.

Description

technical field [0001] The present application belongs to the technical field of image processing, and in particular relates to a building extraction method, device, terminal equipment and readable storage medium. Background technique [0002] In the process of map drawing, urban planning, urban modeling and emergency response to urban disasters, how to identify and extract urban buildings in image data is the most important problem to be solved. [0003] Existing methods for extracting urban buildings mainly include: building extraction methods based on two-dimensional image data; building extraction methods based on three-dimensional data; and building extraction methods based on data fusion of two-dimensional data and three-dimensional data. [0004] Among them, the realization of the building extraction method based on two-dimensional image data depends on the spectral characteristics of high-resolution image data, which is susceptible to spectral ambiguity and shadow oc...

AI Technical Summary

Problems solved by technology

[0010] The embodiment of the present application provides a building extraction method, device, terminal equipment and readable storage medium, which can solve the problems that the existing urban building extraction methods have unstable extraction results, rely on training sample data, and have low precision.

Images