The DL framework consists of a generator and a discriminator. To address these issues, a general deep learning (DL) framework is proposed for UGS mapping in the large scale, and fine-grained UGS maps of 31 major cities in mainland China are generated (UGS-1m). Moreover, the domain shift between images from different regions is also a problem that must be solved. ![]() Although the development of remote sensing platforms and deep learning technologies have provided opportunities for UGS mapping from high-resolution images (HRIs), challenges still exist in its large-scale and fine-grained application due to insufficient annotated datasets and specially designed methods for UGS. Urban green space (UGS) is an important component in the urban ecosystem and has great significance to the urban ecological environment.
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