Lightweight Multi-Scale Asymmetric Attention Network for Image Super-Resolution

Min Zhang, Huibin Wang, Zhen Zhang, Zhe Chen, Jie Shen
2021 Micromachines  
Recently, with the development of convolutional neural networks, single-image super-resolution (SISR) has achieved better performance. However, the practical application of image super-resolution is limited by a large number of parameters and calculations. In this work, we present a lightweight multi-scale asymmetric attention network (MAAN), which consists of a coarse-grained feature block (CFB), fine-grained feature blocks (FFBs), and a reconstruction block (RB). MAAN adopts multiple paths to
more » ... facilitate information flow and accomplish a better balance of performance and parameters. Specifically, the FFB applies a multi-scale attention residual block (MARB) to capture richer features by exploiting the pixel-to-pixel correlation feature. The asymmetric multi-weights attention blocks (AMABs) in MARB are designed to obtain the attention maps for improving SISR efficiency and readiness. Extensive experimental results show that our method has comparable performance with fewer parameters than the current advanced lightweight SISR.
doi:10.3390/mi13010054 pmid:35056219 pmcid:PMC8778112 fatcat:pkmz2jh57fg27bsg5v5e3ebndy