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Learning based image quality assessment (IQA) models have obtained impressive performance with the help of reliable subjective quality labels, where mean opinion score (MOS) is the most popular choice. However, in view of the subjective…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Lei Wang , Qingbo Wu , Desen Yuan , King Ngi Ngan , Hongliang Li , Fanman Meng , Linfeng Xu

No-reference image quality assessment (NR-IQA) aims to measure the image quality without reference image. However, contrast distortion has been overlooked in the current research of NR-IQA. In this paper, we propose a very simple but…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Jia Yan , Jie Li , Xin Fu

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

Reliable image quality assessment is essential in applications where large volumes of images are acquired automatically and must be filtered before further analysis. In many practical scenarios, a pristine reference image is unavailable,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Koffi Titus Sergio Aglin , Anthony K. Muchiri , Celestin Nkundineza

The development of multimodal large language models (MLLMs) enables the evaluation of image quality through natural language descriptions. This advancement allows for more detailed assessments. However, these MLLM-based IQA methods…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Zheng Chen , Xun Zhang , Wenbo Li , Renjing Pei , Fenglong Song , Xiongkuo Min , Xiaohong Liu , Xin Yuan , Yong Guo , Yulun Zhang

Image quality assessment (IQA) continues to garner great interest in the research community, particularly given the tremendous rise in consumer video capture and streaming. Despite significant research effort in IQA in the past few decades,…

Multimedia · Computer Science 2016-09-26 Prajna Paramita Dash , Akshaya Mishra , Alexander Wong

Embodied AI has developed rapidly in recent years, but it is still mainly deployed in laboratories, with various distortions in the Real-world limiting its application. Traditionally, Image Quality Assessment (IQA) methods are applied to…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Chunyi Li , Jiaohao Xiao , Jianbo Zhang , Farong Wen , Zicheng Zhang , Yuan Tian , Xiangyang Zhu , Xiaohong Liu , Zhengxue Cheng , Weisi Lin , Guangtao Zhai

Due to the existence of quality degradations introduced in various stages of visual signal acquisition, compression, transmission and display, image quality assessment (IQA) plays a vital role in image-based applications. According to…

Image and Video Processing · Electrical Eng. & Systems 2022-04-14 Dongxu Wang

Recent learning-based video quality assessment (VQA) algorithms are expensive to implement due to the cost of data collection of human quality opinions, and are less robust across various scenarios due to the biases of these opinions. This…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Haoning Wu , Liang Liao , Jingwen Hou , Chaofeng Chen , Erli Zhang , Annan Wang , Wenxiu Sun , Qiong Yan , Weisi Lin

For full-reference image quality assessment (FR-IQA) using deep-learning approaches, the perceptual similarity score between a distorted image and a reference image is typically computed as a distance measure between features extracted from…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Abhijay Ghildyal , Nabajeet Barman , Saman Zadtootaghaj

Judging the similarity of visualizations is crucial to various applications, such as visualization-based search and visualization recommendation systems. Recent studies show deep-feature-based similarity metrics correlate well with…

Human-Computer Interaction · Computer Science 2025-03-04 Sheng Long , Angelos Chatzimparmpas , Emma Alexander , Matthew Kay , Jessica Hullman

This paper explores how the image quality assessment (IQA) task affects the cognitive processes of people from the perspective of pupil size and studies the relationship between pupil size and image quality. Specifically, we first invited…

Image and Video Processing · Electrical Eng. & Systems 2025-05-21 Yixuan Gao , Xiongkuo Min , Guangtao Zhai

One major problem of objective Image Quality Assessment (IQA) methods is the lack of linearity of their quality estimates with respect to scores expressed by human subjects. For this reason, usually IQA metrics undergo a calibration process…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Elio D. Di Claudio , Paolo Giannitrapani , Giovanni Jacovitti

Image similarity is a core concept in Image Analysis due to its extensive application in computer vision, image processing, and pattern recognition. The objective of our study is to evaluate Quasi-Euclidean metric as an image similarity…

Computer Vision and Pattern Recognition · Computer Science 2020-06-29 Vibhor Singh , Vishesh Devgan , Ishu Anand

To display low-quality broadcast content on high-resolution screens in full-screen format, the application of Super-Resolution (SR), a key consumer technology, is essential. Recently, SR methods have been developed that not only increase…

Image and Video Processing · Electrical Eng. & Systems 2025-11-19 Yongrok Kim , Junha Shin , Juhyun Lee , Hyunsuk Ko

Rapid advances in medical imaging technology underscore the critical need for precise and automated image quality assessment (IQA) to ensure diagnostic accuracy. Existing medical IQA methods, however, struggle to generalize across diverse…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Siyi Xun , Yue Sun , Jingkun Chen , Zitong Yu , Tong Tong , Xiaohong Liu , Mingxiang Wu , Tao Tan

This paper presents PointSSIM, a novel low-dimensional image-to-image comparison metric that is resolution invariant. Drawing inspiration from the structural similarity index measure and mathematical morphology, PointSSIM enables robust…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Oscar Ovanger , Ragnar Hauge , Jacob Skauvold , Michael J. Pyrcz , Jo Eidsvik

Image quality assessment (IQA) is an active research area in the field of image processing. Most prior works focus on visual quality of natural images captured by cameras. In this paper, we explore visual quality of scanned documents,…

Image and Video Processing · Electrical Eng. & Systems 2023-07-26 Justin Yang , Peter Bauer , Todd Harris , Changhyung Lee , Hyeon Seok Seo , Jan P Allebach , Fengqing Zhu

Modern science is dependent on imaging on the nanoscale, often achieved through processes that detect secondary electrons created by a highly focused incident charged particle beam. Multiple types of measurement noise limit the ultimate…

Currently, most image quality assessment (IQA) models are supervised by the MAE or MSE loss with empirically slow convergence. It is well-known that normalization can facilitate fast convergence. Therefore, we explore normalization in the…

Image and Video Processing · Electrical Eng. & Systems 2020-08-11 Dingquan Li , Tingting Jiang , Ming Jiang
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