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摘要

全文摘要次数: 269 全文下载次数: 254
引用本文:

DOI:

10.11834/jrs.20221077

收稿日期:

2021-02-09

修改日期:

2022-01-12

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基于形态学序列和多源先验信息的城市建筑物高分遥感提取
李治, 隋正伟, 傅俏燕, 郑琎琎, 卜桐
中国资源卫星应用中心
摘要:

城市建筑物自动提取是高分辨率遥感影像理解的重要研究方向,其对于城市基础地理信息更新和城市生态保护均具有重要的应用价值和实际意义。然而由于城市场景的复杂性和建筑物形态的多样性降低了空间特征的综合表达能力,成为了制约城市建筑物自动提取的瓶颈问题。为此,本研究在综合分析城市建筑物不同模式空间特征的基础上,提出了一种多模式形态学序列特征和多源先验信息协同的城市建筑物高分遥感自动提取方法。该方法首先提取高分遥感多模式形态学序列特征,在此基础上,引入多源先验信息构建自适应分割模型对其进行自适应分割与信息融合,从而实现城市建筑物信息的自动提取。实验结果表明,本文方法能够准确且自动的提取城市建筑物信息,结果的准确性均优于DMPs和DAPs算法。

High-resolution remote sensing extraction of urban buildings based on morphological sequences and multi-source priori information
Abstract:

Urban building extraction is an important research direction for high-resolution optical remote sensing image understanding and target recognition. Realizing accurate automatic building extraction has important application value and practical significance for the acquisition and update of basic urban geographic information. Due to the complexity of urban scenes and the diversity of building forms, it is difficult to fully express the characteristics of urban buildings and the generalization ability of samples is insufficient, which becomes a bottleneck problem for automatic extraction of urban buildings. In this study, a multi-modal morphological sequence feature synergy method is proposed to fully utilize the advantages of each morphological sequence feature from different modes and jointly mine the high-dimensional spatial information of urban buildings. On this basis, we introduce multi-source a priori information and develop an adaptive segmentation model method based on multi-source a priori information to achieve automatic recognition of urban buildings, thus avoiding the limitations such as errors and low efficiency brought by manual threshold selection. The process of urban building extraction method proposed in this paper is mainly divided into four steps. Firstly, the differential morphological structure sequence features and differential morphological attribute sequence features of remote sensing images are calculated based on the high-resolution remote sensing images respectively. Secondly, the feature selection model is constructed to optimize the differential morphological structure sequence features and differential morphological attribute sequence features respectively. Then, the adaptive segmentation model is constructed based on the multi-source a priori information products and the adaptive segmentation of the preferred features is performed to obtain the initial information of urban buildings. Finally, the voting method is used to fuse the initial information of urban buildings at decision level to obtain the final urban building extraction results. The performance of the proposed method shows that the average extraction accuracy and kappa coefficient of the research method in this paper are 91.3% and 0.87, which are 7.8%, 5.5% and 0.1 and 0.07 higher than 85.7%, 83.5% and 0.81, 0.78 of DMPs and DAPs extraction methods, respectively, thus demonstrating the effectiveness of the method in automatic extraction of urban buildings in this paper. The method in this paper achieves rapid, automated and high-precision urban building information acquisition and update, and provides a method reference template for rapid building detection and update in more cities. In the subsequent research, further quantitative evaluation of each type of a priori information products is needed to further clarify the role of different information products in automatic building extraction, so as to further improve the accuracy and automation of building extraction.

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