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  1. No Access

    Article

    Reversible robust fragile multi-watermarking scheme for color images

    This research introduced a reversible multi-watermarking scheme for color images with robustness and fragility. The robust watermarking can be used for copyright protection while the fragile watermarking is us...

    Shaohua Duan, Yuhan Qian, Junjie Liu, Hanwen Wang… in Multimedia Tools and Applications (2023)

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    Chapter and Conference Paper

    A Problem-Driven Discussion Teaching Method Based on Progressive Cycle

    The problem-driven discussion teaching method is that in the process of teaching, according to the objective law of the learning process, teachers adopt the methods of asking questions, inspiration and guidanc...

    **aoyi Zhou, Shaohua Duan, Wei Li in Cyberspace Safety and Security (2021)