Perception-oriented Bidirectional Attention Network for Image Super-resolution Quality Assessment

• URL: http://arxiv.org/abs/2509.06442v1
• Date: Mon, 08 Sep 2025 08:39:45 GMT
• Title: Perception-oriented Bidirectional Attention Network for Image Super-resolution Quality Assessment
• Authors: Yixiao Li, Xiaoyuan Yang, Guanghui Yue, Jun Fu, Qiuping Jiang, Xu Jia, Paul L. Rosin, Hantao Liu, Wei Zhou,
• Abstract summary: We propose the Perception-oriented Bidirectional Attention Network (PBAN) for image SR FR-IQA.<n>PBAN is composed of three modules: an image encoder module, a perception-oriented bidirectional attention (PBA) module, and a quality prediction module.<n>Our proposed PBAN outperforms state-of-the-art quality assessment methods.
• Score: 61.27648290203618
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Many super-resolution (SR) algorithms have been proposed to increase image resolution. However, full-reference (FR) image quality assessment (IQA) metrics for comparing and evaluating different SR algorithms are limited. In this work, we propose the Perception-oriented Bidirectional Attention Network (PBAN) for image SR FR-IQA, which is composed of three modules: an image encoder module, a perception-oriented bidirectional attention (PBA) module, and a quality prediction module. First, we encode the input images for feature representations. Inspired by the characteristics of the human visual system, we then construct the perception-oriented PBA module. Specifically, different from existing attention-based SR IQA methods, we conceive a Bidirectional Attention to bidirectionally construct visual attention to distortion, which is consistent with the generation and evaluation processes of SR images. To further guide the quality assessment towards the perception of distorted information, we propose Grouped Multi-scale Deformable Convolution, enabling the proposed method to adaptively perceive distortion. Moreover, we design Sub-information Excitation Convolution to direct visual perception to both sub-pixel and sub-channel attention. Finally, the quality prediction module is exploited to integrate quality-aware features and regress quality scores. Extensive experiments demonstrate that our proposed PBAN outperforms state-of-the-art quality assessment methods.

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