Generating continuous fine-scale land cover mapping by edge-guided maximum a posteriori based spatiotemporal sub-pixel mapping

He, Da; Zhong, Yanfei; Shi, Qian; Li, Xiaoping; Zhang, Liangpei

doi:10.1016/j.srs.2022.100041

Cited by 1 publication

(1 citation statement)

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“…The two-step SRM is commonly used to reduce spectralspatial errors, in which land cover fraction images are first produced, and then input to super-resolution analysis to generate a fine-resolution land cover map [24][25][26]. This kind of SRM can be interpreted as fraction-based, as its input is the fraction image generated by spectral unmixing [27].…”

Section: Introductionmentioning

confidence: 99%

Spectral–Spatial Generative Adversarial Network for Super-Resolution Land Cover Mapping With Multispectral Remotely Sensed Imagery

Shang

Jiang

Ling

et al. 2023

IEEE J. Sel. Top. Appl. Earth Observations Remote Sensing

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Super-resolution mapping (SRM) can effectively predict the spatial distribution of land cover classes within mixed pixels at a higher spatial resolution than the original remotely sensed imagery. The uncertainty of land cover fraction errors within mixed pixels is one of the most important factors affecting SRM accuracy. Studies have shown that SRM methods using deep learning techniques have significantly improved land cover mapping accuracy but have not coped well with spectral-spatial errors. This study proposes an end-to-end SRM model using a spectral-spatial generative adversarial network (SGS) with the direct input of multispectral remotely sensed imagery, which deals with spectral-spatial error. The proposed SGS comprises three parts: (1) Cube-based convolution for spectral unmixing is adopted to generate land cover fraction images. (2) A residual-inresidual dense block fully and jointly considers spectral and spatial information and reduces spectral errors. (3) A relativistic average GAN is designed as a backbone to further improve super-resolution performance and reduce spectral-spatial errors. SGS was tested in one synthetic and two realistic experiments with multi-/hyper-spectral remotely sensed imagery as the input, comparing the results with those of hard classification and several classic SRM methods. The results showed that SGS performed well at reducing land cover fraction errors, reconstructing spatial details, removing unpleasant and unrealistic land cover artifacts, and eliminating false recognition.

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