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Visual quality assessment of screen content images (SCIs) has emerged as a significant research field in digital image processing. Current methods based on convolutional neural networks (CNN) and Transformer have exhibited promising performance. However, most of the existing methods only extract local features or global contextual features from distorted images for quality perception, lacking the information interaction between local and global features. Furthermore, due to the limited training data, most methods use image chunking for data enhancement, ignoring the visual quality differences among different image patches. Aiming at the above problems, our paper proposes an effective no-reference image quality assessment model for SCIs based on hybrid CNN-transformer and multi-region selective features. Firstly, we extract the local and global contextual features of multiple regions separately. Then, we use the bilateral feature interaction module proposed to enhance the information exchange between local and global features, thereby refining the image features with different granularities. Secondly, to fully consider the visual quality differences among different regional image patches, we propose a regional feature selection module to adaptively learn the correlation between them, assigning higher learning weights to important regional features. The experimental results show that the model proposed in this paper outperforms the state-of-the-art no-reference and full-reference SCI quality assessment methods, and achieves higher consistency with the subjective visual perception. © 2023 IEEE.
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Year: 2023
Page: 947-951
Language: English
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 2
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