Real-time deep image super-resolution via global context aggregation and local queue jumping

Deep learning-based image super-resolution has provided very impressive reconstruction quality. However, their running time still sets barriers for real-time applications. In this paper, we propose a Global context aggregation and Local queue jumping Network (GLNet) which provides the more effective image SR given a certain number of model parameters. In our GLNet, we reconsider the model design of the real-time image SR paradigm. Then, we construct a deep network with fewer channels but a deeper structure to effectively aggregate the global context. The dilated convolutions are used as parts of basic units of our GLNet, which further enlarges the receptive field. Besides, an additional local queue jumping path is employed to connect the first-layer feature map and the last-layer feature map to better model the local signal structure. Extensive experiments demonstrate the superiority of our GLNet which offers new state-of-the-art performance considering both reconstruction quality and time consumption.