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author:

Huang, Feng (Huang, Feng.) [1] | Liu, Hongwei (Liu, Hongwei.) [2] | Chen, Liqiong (Chen, Liqiong.) [3] (Scholars:陈丽琼) | Shen, Ying (Shen, Ying.) [4] (Scholars:沈英) | Yu, Min (Yu, Min.) [5]

Indexed by:

Scopus SCIE

Abstract:

Attention mechanisms have been introduced to exploit deep-level information for image restoration by capturing feature dependencies. However, existing attention mechanisms often have limited perceptual capabilities and are incompatible with low-power devices due to computational resource constraints. Therefore, we propose a feature enhanced cascading attention network (FECAN) that introduces a novel feature enhanced cascading attention (FECA) mechanism, consisting of enhanced shuffle attention (ESA) and multi-scale large separable kernel attention (MLSKA). Specifically, ESA enhances high-frequency texture features in the feature maps, and MLSKA executes the further extraction. The rich and fine-grained high-frequency information are extracted and fused from multiple perceptual layers, thus improving super-resolution (SR) performance. To validate FECAN's effectiveness, we evaluate it with different complexities by stacking different numbers of high-frequency enhancement modules (HFEM) that contain FECA. Extensive experiments on benchmark datasets demonstrate that FECAN outperforms state-of-the-art lightweight SR networks in terms of objective evaluation metrics and subjective visual quality. Specifically, at a x 4 scale with a 121 K model size, compared to the second-ranked MAN-tiny, FECAN achieves a 0.07 dB improvement in average peak signal-to-noise ratio (PSNR), while reducing network parameters by approximately 19% and FLOPs by 20%. This demonstrates a better trade-off between SR performance and model complexity.

Keyword:

Convolution neural network Enhanced shuffle attention Lightweight image super-resolution Multi-scale large separable kernel attention

Community:

  • [ 1 ] [Huang, Feng]Fuzhou Univ, Coll Mech Engn & Automat, Fuzhou 350108, Peoples R China
  • [ 2 ] [Liu, Hongwei]Fuzhou Univ, Coll Mech Engn & Automat, Fuzhou 350108, Peoples R China
  • [ 3 ] [Chen, Liqiong]Fuzhou Univ, Coll Mech Engn & Automat, Fuzhou 350108, Peoples R China
  • [ 4 ] [Shen, Ying]Fuzhou Univ, Coll Mech Engn & Automat, Fuzhou 350108, Peoples R China
  • [ 5 ] [Yu, Min]Zhongyu Fujian Digital Technol Co Ltd, Fuzhou 350108, Peoples R China

Reprint 's Address:

  • [Shen, Ying]Fuzhou Univ, Coll Mech Engn & Automat, Fuzhou 350108, Peoples R China;;[Yu, Min]Zhongyu Fujian Digital Technol Co Ltd, Fuzhou 350108, Peoples R China;;

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Source :

SCIENTIFIC REPORTS

ISSN: 2045-2322

Year: 2025

Issue: 1

Volume: 15

3 . 8 0 0

JCR@2023

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 3

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