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Among the various image quality assessment (IQA) tasks, blind IQA (BIQA) is particularly challenging due to the absence of knowledge about the reference image and distortion type. Features based on natural scene statistics (NSS) have been…

Computer Vision and Pattern Recognition · Computer Science 2015-10-13 Wufeng Xue , Xuanqin Mou , Lei Zhang

Traditional image quality assessment (IQA) methods rely on mean opinion scores (MOS), which are resource-intensive to collect and fail to provide interpretable, localized feedback on specific image distortions. We overcome these limitations…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Fadeel Sher Khan , Long N. Le , Abhinau K. Venkataramanan , Seok-Jun Lee , Hamid R. Sheikh

Subjective perceptual image quality can be assessed in lab studies by human observers. Objective image quality assessment (IQA) refers to algorithms for estimation of the mean subjective quality ratings. Many such methods have been…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Markus Wagner , Hanhe Lin , Shujun Li , Dietmar Saupe

In recent years, the rapid advancement of Artificial Intelligence Generated Content (AIGC) has attracted widespread attention. Among the AIGC, AI generated omnidirectional images hold significant potential for Virtual Reality (VR) and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Liu Yang , Huiyu Duan , Long Teng , Yucheng Zhu , Xiaohong Liu , Menghan Hu , Xiongkuo Min , Guangtao Zhai , Patrick Le Callet

Blind Image Quality Assessment (BIQA) is essential for automatically evaluating the perceptual quality of visual signals without access to the references. In this survey, we provide a comprehensive analysis and discussion of recent…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Miaohui Wang

Optical microscopy is one of the most widely used techniques in research studies for life sciences and biomedicine. These applications require reliable experimental pipelines to extract valuable knowledge from the measured samples and must…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Elena Corbetta , Thomas Bocklitz

The optimization objective of regression-based blind image quality assessment (IQA) models is to minimize the mean prediction error across the training dataset, which can lead to biased parameter estimation due to potential training data…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Xiaoqi Wang , Jian Xiong , Hao Gao , Weisi Lin

This paper presents a high-performance general-purpose no-reference (NR) image quality assessment (IQA) method based on image entropy. The image features are extracted from two domains. In the spatial domain, the mutual information between…

Computer Vision and Pattern Recognition · Computer Science 2018-12-31 Xiaoqiao Chen , Qingyi Zhang , Manhui Lin , Guangyi Yang , Chu He

No-reference image quality assessment (NR-IQA) aims to simulate the process of perceiving image quality aligned with subjective human perception. However, existing NR-IQA methods either focus on global representations that leads to limited…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Chenyue Song , Chen Hui , Haiqi Zhu , Feng Jiang , Yachun Mi , Wei Zhang , Shaohui Liu

Scientific images fundamentally differ from natural and AI-generated images in that they encode structured domain knowledge rather than merely depict visual scenes. Assessing their quality therefore requires evaluating not only perceptual…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Wenzhe Li , Liang Chen , Junying Wang , Yijing Guo , Ye Shen , Farong Wen , Chunyi Li , Zicheng Zhang , Guangtao Zhai

Blind Image Quality Assessment (BIQA) aims to develop methods that estimate the quality scores of images in the absence of a reference image. In this paper, we approach BIQA from a distortion identification perspective, where our primary…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Sepehr Kazemi Ranjbar , Emad Fatemizadeh

Omnidirectional videos (ODVs) play an increasingly important role in the application fields of medical, education, advertising, tourism, etc. Assessing the quality of ODVs is significant for service-providers to improve the user's Quality…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Xilei Zhu , Huiyu Duan , Yuqin Cao , Yuxin Zhu , Yucheng Zhu , Jing Liu , Li Chen , Xiongkuo Min , Guangtao Zhai

Image quality assessment(IQA) is of increasing importance for image-based applications. Its purpose is to establish a model that can replace humans for accurately evaluating image quality. According to whether the reference image is…

Image and Video Processing · Electrical Eng. & Systems 2022-01-12 Lanjiang Wang

Perceptual image quality assessment (IQA) is the task of predicting the visual quality of an image as perceived by a human observer. Current state-of-the-art techniques are based on deep representations trained in discriminative manner.…

Image and Video Processing · Electrical Eng. & Systems 2024-04-30 Simon Raviv , Gal Chechik

Blind image quality assessment (BIQA) aims at automatically and accurately forecasting objective scores for visual signals, which has been widely used to monitor product and service quality in low-light applications, covering smartphone…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Miaohui Wang , Zhuowei Xu , Mai Xu , Weisi Lin

With the rapid advancement of Artificial Intelligence Generated Content (AIGC) techniques, AI generated images (AIGIs) have attracted widespread attention, among which AI generated omnidirectional images (AIGODIs) hold significant potential…

Computer Vision and Pattern Recognition · Computer Science 2025-06-30 Liu Yang , Huiyu Duan , Jiarui Wang , Jing Liu , Menghan Hu , Xiongkuo Min , Guangtao Zhai , Patrick Le Callet

Image Quality Assessment (IQA) algorithms evaluate the perceptual quality of an image using evaluation scores that assess the similarity or difference between two images. We propose a new low-level feature based IQA technique, which applies…

Multimedia · Computer Science 2017-12-04 Navaneeth K. Kottayil , Irene Cheng , Frederic Dufaux , Anup Basu

No reference image quality assessment (NR-IQA) is a task to estimate the perceptual quality of an image without its corresponding original image. It is even more difficult to perform this task in a zero-shot manner, i.e., without…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Takamichi Miyata

Full-reference image quality assessment (FR-IQA) techniques compare a reference and a distorted/test image and predict the perceptual quality of the test image in terms of a scalar value representing an objective score. The evaluation of…

Computer Vision and Pattern Recognition · Computer Science 2014-12-18 Ashirbani Saha , Q. M. Jonathan Wu

Along with the development of virtual reality (VR), omnidirectional images play an important role in producing multimedia content with immersive experience. However, despite various existing approaches for omnidirectional image stitching,…

Computer Vision and Pattern Recognition · Computer Science 2019-04-24 Kaiwen Yu , Jia Li , Yu Zhang , Yifan Zhao , Long Xu