Abstract: Highlights•A network-based but pre-training-free blind SISR method, DDSR, is firstly proposed.•DDSR adopts a sampling-based network to replace the pre-training-based networks.•A meta-learning optimization is proposed to prevent trapping into bad local modes.•Extensive simulations validate the superior performance of DDSR compared with SOTAs.
External IDs:doi:10.1016/j.neunet.2024.106429
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