Add ICCV 2023 paper: High-Resolution Document Shadow Removal via A Large-Scale Real-World Dataset and A Frequency-Aware Shadow Erasing Net.

[zinuoli]

Paper name: High-Resolution Document Shadow Removal via A Large-Scale Real-World Dataset and A Frequency-Aware Shadow Erasing Net.
Paper link: https://arxiv.org/abs/2308.14221
Code link: https://github.com/CXH-Research/DocShadow-SD7K
Related area: Shadow removal, Low-level Computer Vision

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