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Evaluating image captions requires cohesive assessment of both visual semantics and language pragmatics, which is often not entirely captured by most metrics. We introduce Redemption Score(RS), a novel hybrid framework that ranks image…

Computer Vision and Pattern Recognition · Computer Science 2025-09-25 Ashim Dahal , Ankit Ghimire , Saydul Akbar Murad , Nick Rahimi

Image quality assessment (IQA) is standard practice in the development stage of novel machine learning algorithms that operate on images. The most commonly used IQA measures have been developed and tested for natural images, but not in the…

In recent years, there has been widespread attention drawn to convolutional neural network (CNN) based blind image quality assessment (IQA). A large number of works start by extracting deep features from CNN. Then, those features are…

Computer Vision and Pattern Recognition · Computer Science 2022-09-30 Tongda Xu , Yifan Shao , Yan Wang , Hongwei Qin

Estimation by Analogy (EBA) is an increasingly active research method in the area of software engineering. The fundamental assumption of this method is that the similar projects in terms of attribute values will also be similar in terms of…

Software Engineering · Computer Science 2017-03-21 Mohammad Azzeh

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

Although recent efforts in image quality assessment (IQA) have achieved promising performance, there still exists a considerable gap compared to the human visual system (HVS). One significant disparity lies in humans' seamless transition…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Yi Ke Yun , Weisi Lin

Year after year, the demand for ever-better smartphone photos continues to grow, in particular in the domain of portrait photography. Manufacturers thus use perceptual quality criteria throughout the development of smartphone cameras. This…

Computer Vision and Pattern Recognition · Computer Science 2023-04-13 Nicolas Chahine , Ana-Stefania Calarasanu , Davide Garcia-Civiero , Theo Cayla , Sira Ferradans , Jean Ponce

Full-reference (FR) image quality assessment (IQA) models assume a high quality "pristine" image as a reference against which to measure perceptual image quality. In many applications, however, the assumption that the reference image is of…

Image and Video Processing · Electrical Eng. & Systems 2018-02-12 Xiangxu Yu , Christos G. Bampis , Praful Gupta , Alan C. Bovik

By computing the rank correlation between attention weights and feature-additive explanation methods, previous analyses either invalidate or support the role of attention-based explanations as a faithful and plausible measure of salience.…

Machine Learning · Computer Science 2021-07-07 Michael Neely , Stefan F. Schouten , Maurits J. R. Bleeker , Ana Lucic

This study investigates the evaluation of multimedia quality models, focusing on the inherent uncertainties in subjective Mean Opinion Score (MOS) ratings due to factors like rater inconsistency and bias. Traditional statistical measures…

Multimedia · Computer Science 2024-11-12 Alessandro Ragano , Helard Becerra Martinez , Andrew Hines

Image Quality Assessment (IQA) predicts perceptual quality scores consistent with human judgments. Recent RL-based IQA methods built on MLLMs focus on generating visual quality descriptions and scores, ignoring two key reliability…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Wulin Xie , Rui Dai , Ruidong Ding , Kaikui Liu , Xiangxiang Chu , Xinwen Hou , Jie Wen

Reasoning-based image quality assessment (IQA) models trained through reinforcement learning (RL) exhibit exceptional generalization, yet the underlying mechanisms and critical factors driving this capability remain underexplored in current…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Shijie Zhao , Xuanyu Zhang , Weiqi Li , Junlin Li , Li Zhang , Tianfan Xue , Jian Zhang

Image quality assessment that aims at estimating the subject quality of images, builds models to evaluate the perceptual quality of the image in different applications. Based on the fact that the human visual system (HVS) is highly…

Image and Video Processing · Electrical Eng. & Systems 2020-12-22 Congmin Chen , Xuanqin Mou

We compare measures of concordance that arise as Pearson's linear correlation coefficient between two random variables transformed so that they follow the so-called concordance-inducing distributions. The class of such transformed rank…

Statistics Theory · Mathematics 2023-03-07 Takaaki Koike , Marius Hofert

Kendall rank correlation coefficient is used to measure the ordinal association between two measurements. In this paper, we introduce the Concordance coefficient as a generalization of the Kendall rank correlation, and illustrate its use to…

Methodology · Statistics 2020-11-13 Juan Francisco Monge

Image quality assessment (IQA) algorithm aims to quantify the human perception of image quality. Unfortunately, there is a performance drop when assessing the distortion images generated by generative adversarial network (GAN) with…

Computer Vision and Pattern Recognition · Computer Science 2022-04-25 Shanshan Lao , Yuan Gong , Shuwei Shi , Sidi Yang , Tianhe Wu , Jiahao Wang , Weihao Xia , Yujiu Yang

The task of image captioning has recently been gaining popularity, and with it the complex task of evaluating the quality of image captioning models. In this work, we present the first survey and taxonomy of over 70 different image…

Computation and Language · Computer Science 2025-09-16 Uri Berger , Gabriel Stanovsky , Omri Abend , Lea Frermann

Image compression has raised widespread interest recently due to its significant importance for multimedia storage and transmission. Meanwhile, a reliable image quality assessment (IQA) for compressed images can not only help to verify the…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Jianzhao Liu , Xin Li , Yanding Peng , Tao Yu , Zhibo Chen

Image Quality Assessment (IQA) and Image Aesthetic Assessment (IAA) aim to simulate human subjective perception of image visual quality and aesthetic appeal. Despite distinct learning objectives, they have underlying interconnectedness due…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Hantao Zhou , Longxiang Tang , Rui Yang , Guanyi Qin , Yan Zhang , Yutao Li , Xiu Li , Runze Hu , Guangtao Zhai

BIQA (Blind Image Quality Assessment) is an important field of study that evaluates images automatically. Although significant progress has been made, blind image quality assessment remains a difficult task since images vary in content and…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Muhammad Azeem Aslam , Xu Wei , Hassan Khalid , Nisar Ahmed , Zhu Shuangtong , Xin Liu , Yimei Xu