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Progress in lighting estimation is tracked by computing existing image quality assessment (IQA) metrics on images from standard datasets. While this may appear to be a reasonable approach, we demonstrate that doing so does not correlate to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Justine Giroux , Mohammad Reza Karimi Dastjerdi , Yannick Hold-Geoffroy , Javier Vazquez-Corral , Jean-François Lalonde

We propose a novel method for unsupervised semantic image segmentation based on mutual information maximization between local and global high-level image features. The core idea of our work is to leverage recent progress in self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2021-10-08 Robert Harb , Patrick Knöbelreiter

We introduce a Parametric Information Maximization (PIM) model for the Generalized Category Discovery (GCD) problem. Specifically, we propose a bi-level optimization formulation, which explores a parameterized family of objective functions,…

Computer Vision and Pattern Recognition · Computer Science 2023-07-17 Florent Chiaroni , Jose Dolz , Ziko Imtiaz Masud , Amar Mitiche , Ismail Ben Ayed

Generative adversarial models that capture salient low-level features which convey visual information in correlation with the human visual system (HVS) still suffer from perceptible image degradations. The inability to convey such highly…

Computer Vision and Pattern Recognition · Computer Science 2021-10-26 Uche Osahor , Nasser M. Nasrabadi

It is now generally accepted that Euclidean-based metrics may not always adequately represent the subjective judgement of a human observer. As a result, many image processing methodologies have been recently extended to take advantage of…

Optimization and Control · Mathematics 2020-02-10 D. Otero , D. La Torre , O. Michailovich , E. R. Vrscay

Performance of trimap-free image matting methods is limited when trying to decouple the deterministic and undetermined regions, especially in the scenes where foregrounds are semantically ambiguous, chromaless, or high transmittance. In…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Cheng Lyu , Jiake Xie , Bo Xu , Cheng Lu , Han Huang , Xin Huang , Ming Wu , Chuang Zhang , Yong Tang

Mutual information (MI) is a fundamental measure of statistical dependence between two variables, yet accurate estimation from finite data remains notoriously difficult. No estimator is universally reliable, and common approaches fail in…

Data Analysis, Statistics and Probability · Physics 2025-10-02 Eslam Abdelaleem , K. Michael Martini , Ilya Nemenman

Image Quality Assessment (IQA) aims to evaluate the perceptual quality of images based on human subjective perception. Existing methods generally combine multiscale features to achieve high performance, but most rely on straightforward…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Chenyue Song , Chen Hui , Wei Zhang , Haiqi Zhu , Shaohui Liu , Hong Huang , Feng Jiang

With the evolution of storage and communication protocols, ultra-low bitrate image compression has become a highly demanding topic. However, existing compression algorithms must sacrifice either consistency with the ground truth or…

Computer Vision and Pattern Recognition · Computer Science 2024-04-18 Chunyi Li , Guo Lu , Donghui Feng , Haoning Wu , Zicheng Zhang , Xiaohong Liu , Guangtao Zhai , Weisi Lin , Wenjun Zhang

The rapid advancement of generative AI models necessitates novel methods for evaluating image quality that extend beyond human perception. A critical concern for these models is the preservation of an image's underlying Scene Composition…

Computer Vision and Pattern Recognition · Computer Science 2025-09-10 Md Redwanul Haque , Manzur Murshed , Manoranjan Paul , Tsz-Kwan Lee

The importance of Image quality assessment (IQA) is ever increasing due to the fast paced advances in imaging technology and computer vision. Among the numerous IQA methods, Structural SIMilarity (SSIM) index and its variants are better…

Image and Video Processing · Electrical Eng. & Systems 2022-12-06 X. Li , W. Armour

Image pyramids are widely adopted in top-performing methods to obtain multi-scale features for precise visual perception and understanding. However, current image pyramids use the same large-scale model to process multiple resolutions of…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Zhaokai Wang , Xizhou Zhu , Xue Yang , Gen Luo , Hao Li , Changyao Tian , Wenhan Dou , Junqi Ge , Lewei Lu , Yu Qiao , Jifeng Dai

In this work, we survey recent studies on masked image modeling (MIM), an approach that emerged as a powerful self-supervised learning technique in computer vision. The MIM task involves masking some information, e.g. pixels, patches, or…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Vlad Hondru , Florinel Alin Croitoru , Shervin Minaee , Radu Tudor Ionescu , Nicu Sebe

Developers of text generation models rely on automated evaluation metrics as a stand-in for slow and expensive manual evaluations. However, image captioning metrics have struggled to give accurate learned estimates of the semantic and…

Computation and Language · Computer Science 2022-03-21 Mert İnan , Piyush Sharma , Baber Khalid , Radu Soricut , Matthew Stone , Malihe Alikhani

Traditional image quality assessment metrics like Mean Squared Error and Structural Similarity Index often fail to reflect perceptual quality under complex distortions. We propose the Hybrid Image Resolution Quality Metric (HIRQM),…

Image and Video Processing · Electrical Eng. & Systems 2025-05-06 Vineesh Kumar Reddy Mondem

Learning representations that transfer well to diverse downstream tasks remains a central challenge in representation learning. Existing paradigms -- contrastive learning, self-supervised masking, and denoising auto-encoders -- balance this…

Machine Learning · Computer Science 2025-09-29 Micha Livne

When performing data classification over a stream of continuously occurring instances, a key challenge is to develop an open-world classifier that anticipates instances from an unknown class. Studies addressing this problem, typically…

Computer Vision and Pattern Recognition · Computer Science 2018-10-10 Yang Gao , Swarup Chandra , Zhuoyi Wang , Latifur Khan

Unsupervised large-scale vision-language pre-training has shown promising advances on various downstream tasks. Existing methods often model the cross-modal interaction either via the similarity of the global feature of each modality which…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 Lewei Yao , Runhui Huang , Lu Hou , Guansong Lu , Minzhe Niu , Hang Xu , Xiaodan Liang , Zhenguo Li , Xin Jiang , Chunjing Xu

Recent deep learning-based methods for lossy image compression achieve competitive rate-distortion performance through extensive end-to-end training and advanced architectures. However, emerging applications increasingly prioritize semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Ruiqi Shen , Haotian Wu , Wenjing Zhang , Jiangjing Hu , Deniz Gunduz

Evaluating and comparing text-to-image models is a challenging problem. Significant advances in the field have recently been made, piquing interest of various industrial sectors. As a consequence, a gold standard in the field should cover a…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Federico A. Galatolo , Mario G. C. A. Cimino , Edoardo Cogotti