VSI: a visual saliency-induced index for perceptual image quality assessment.
Lin Zhang,Ying Shen,Hongyu Li +2 more
TLDR
Extensive experiments performed on four largescale benchmark databases demonstrate that the proposed IQA index VSI works better in terms of the prediction accuracy than all state-of-the-art IQA indices the authors can find while maintaining a moderate computational complexity.Abstract:
Perceptual image quality assessment (IQA) aims to use computational models to measure the image quality in consistent with subjective evaluations. Visual saliency (VS) has been widely studied by psychologists, neurobiologists, and computer scientists during the last decade to investigate, which areas of an image will attract the most attention of the human visual system. Intuitively, VS is closely related to IQA in that suprathreshold distortions can largely affect VS maps of images. With this consideration, we propose a simple but very effective full reference IQA method using VS. In our proposed IQA model, the role of VS is twofold. First, VS is used as a feature when computing the local quality map of the distorted image. Second, when pooling the quality score, VS is employed as a weighting function to reflect the importance of a local region. The proposed IQA index is called visual saliency-based index (VSI). Several prominent computational VS models have been investigated in the context of IQA and the best one is chosen for VSI. Extensive experiments performed on four large-scale benchmark databases demonstrate that the proposed IQA index VSI works better in terms of the prediction accuracy than all state-of-the-art IQA indices we can find while maintaining a moderate computational complexity. The MATLAB source code of VSI and the evaluation results are publicly available online at http://sse.tongji.edu.cn/linzhang/IQA/VSI/VSI.htm.read more
Citations
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Journal ArticleDOI
Perceptual Quality Assessment for Multi-Exposure Image Fusion
TL;DR: This paper proposes a novel objective image quality assessment (IQA) algorithm for MEF images based on the principle of the structural similarity approach and a novel measure of patch structural consistency and shows that the proposed model well correlates with subjective judgments and significantly outperforms the existing IQA models for general image fusion.
Journal ArticleDOI
Deep Neural Networks for No-Reference and Full-Reference Image Quality Assessment
TL;DR: A deep neural network-based approach to image quality assessment (IQA) that allows for joint learning of local quality and local weights in an unified framework and shows a high ability to generalize between different databases, indicating a high robustness of the learned features.
Journal ArticleDOI
Fully Deep Blind Image Quality Predictor
Jongyoo Kim,Sanghoon Lee +1 more
TL;DR: A blind image evaluator based on a convolutional neural network (BIECON) is proposed that follows the FR-IQA behavior using the local quality maps as intermediate targets for conventional neural networks, which leads to NR- IQA prediction accuracy that is comparable with that of state-of-the-art FR-iqA methods.
Journal ArticleDOI
The Analysis of Image Contrast: From Quality Assessment to Automatic Enhancement
TL;DR: A novel reduced-reference image quality metric for contrast change (RIQMC) is presented using phase congruency and statistics information of the image histogram and results justify the superiority and efficiency of RIQMC over a majority of classical and state-of-the-art IQA methods.
Journal ArticleDOI
Image Quality Assessment: Unifying Structure and Texture Similarity.
TL;DR: This work develops the first full-reference image quality model with explicit tolerance to texture resampling, using a convolutional neural network to construct an injective and differentiable function that transforms images to multi-scale overcomplete representations.
References
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