arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.07997cs.CV
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基于A2-FPN的高分辨率遥感图像语义分割

A2-FPN for Semantic Segmentation of Fine-Resolution Remotely Sensed Images

Wuhan University(武汉大学);Lancaster University(兰卡斯特大学);UK Centre for Ecology and Hydrology(英国生态与水文中心)

Rui Li, Shunyi Zheng, Ce Zhang, Chenxi Duan, Libo Wang

摘要:

基于高分辨率遥感图像的语义分割在城市规划、环境保护、自然景观和人为景观监测等许多实际应用中起着至关重要的作用。自动分类/标记和分割仍然是一项具有挑战性的任务,特别是对于具有巨大空间和频谱复杂性的精细分辨率图像。解决这样一个问题代表了一个令人兴奋的研究领域,这为场景级景观格局分析和决策铺平了道路。本文提出了一种基于特征金字塔网络的土地自动分割方法。作为一种经典的体系结构,FPN可以构建一个贯穿始终的具有高级语义的特征金字塔。然而,特征提取和融合中的固有缺陷阻碍了FPN进一步聚合更多的区分特征。因此,我们提出了一个注意力聚合模块(AAM),通过注意力引导的特征聚合来增强多尺度特征学习。在FPN和AAM的基础上,提出了一种新的用于高分辨率遥感图像语义分割的注意力聚合特征金字塔网络(A2-FPN)框架。在三个数据集上进行的大量实验证明了我们的A2 -FPN在分割精度方面的有效性。代码可在https://github.com/lironui/A2-FPN上获得。

英文摘要:

Semantic segmentation using fine-resolution remotely sensed images plays a critical role in many practical applications, such as urban planning, environmental protection, natural and anthropogenic landscape monitoring, etc. However, the automation of semantic segmentation, i.e., automatic categorization/labeling and segmentation is still a challenging task, particularly for fine-resolution images with huge spatial and spectral complexity. Addressing such a problem represents an exciting research field, which paves the way for scene-level landscape pattern analysis and decision making. In this paper, we propose an approach for automatic land segmentation based on the Feature Pyramid Network (FPN). As a classic architecture, FPN can build a feature pyramid with high-level semantics throughout. However, intrinsic defects in feature extraction and fusion hinder FPN from further aggregating more discriminative features. Hence, we propose an Attention Aggregation Module (AAM) to enhance multi-scale feature learning through attention-guided feature aggregation. Based on FPN and AAM, a novel framework named Attention Aggregation Feature Pyramid Network (A2-FPN) is developed for semantic segmentation of fine-resolution remotely sensed images. Extensive experiments conducted on three datasets demonstrate the effectiveness of our A2 -FPN in segmentation accuracy. Code is available at https://github.com/lironui/A2-FPN.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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