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As applications using immersive media gained increased attention from both academia and industry, research in the field of point cloud compression has greatly intensified in recent years, leading to the development of the MPEG compression…

Image and Video Processing · Electrical Eng. & Systems 2024-11-01 Davi Lazzarotto , Michela Testolina , Touradj Ebrahimi

The performance of face analysis and recognition systems depends on the quality of the acquired face data, which is influenced by numerous factors. Automatically assessing the quality of face data in terms of biometric utility can thus be…

Computer Vision and Pattern Recognition · Computer Science 2022-01-14 Torsten Schlett , Christian Rathgeb , Olaf Henniger , Javier Galbally , Julian Fierrez , Christoph Busch

Aesthetics are often used to evaluate the quality of graph drawings. However, the existing aesthetic criteria are useful in judging the extents to which a drawing conforms to particular drawing rules. They have limitations in evaluating…

Human-Computer Interaction · Computer Science 2013-06-12 Weidong Huang

Fairness has been a critical issue that affects the adoption of deep learning models in real practice. To improve model fairness, many existing methods have been proposed and evaluated to be effective in their own contexts. However, there…

Machine Learning · Computer Science 2024-03-26 Junjie Yang , Jiajun Jiang , Zeyu Sun , Junjie Chen

Image classifiers should be used with caution in the real world. Performance evaluated on a validation set may not reflect performance in the real world. In particular, classifiers may perform well for conditions that are frequently…

Computer Vision and Pattern Recognition · Computer Science 2024-09-30 Adrien LeCoz , Houssem Ouertatani , Stéphane Herbin , Faouzi Adjed

Virtual Reality (VR) and its applications have attracted significant and increasing attention. However, the requirements of much larger file sizes, different storage formats, and immersive viewing conditions pose significant challenges to…

Image and Video Processing · Electrical Eng. & Systems 2022-04-06 Meixu Chen , Yize Jin , Todd Goodall , Xiangxu Yu , Alan C. Bovik

The growing number of dimensionality reduction methods available for data visualization has recently inspired the development of quality assessment measures, in order to evaluate the resulting low-dimensional representation independently…

Machine Learning · Computer Science 2011-10-19 Wouter Lueks , Bassam Mokbel , Michael Biehl , Barbara Hammer

Image quantization is used in several applications aiming in reducing the number of available colors in an image and therefore its size. De-quantization is the task of reversing the quantization effect and recovering the original…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Kalliopi Basioti , George V. Moustakides

Image quality assessment (IQA) forms a natural and often straightforward undertaking for humans, yet effective automation of the task remains highly challenging. Recent metrics from the deep learning community commonly compare image pairs…

Computer Vision and Pattern Recognition · Computer Science 2022-11-11 William Thong , Jose Costa Pereira , Sarah Parisot , Ales Leonardis , Steven McDonagh

Video quality assessment (VQA) is an important processing task, aiming at predicting the quality of videos in a manner highly consistent with human judgments of perceived quality. Traditional VQA models based on natural image and/or video…

Image and Video Processing · Electrical Eng. & Systems 2024-12-12 Qi Zheng , Yibo Fan , Leilei Huang , Tianyu Zhu , Jiaming Liu , Zhijian Hao , Shuo Xing , Chia-Ju Chen , Xiongkuo Min , Alan C. Bovik , Zhengzhong Tu

Finding optimal data for inpainting is a key problem in the context of partial differential equation based image compression. The data that yields the most accurate reconstruction is real-valued. Thus, quantisation models are mandatory to…

Computer Vision and Pattern Recognition · Computer Science 2017-06-21 Laurent Hoeltgen , Pascal Peter , Michael Breuß

Image composition involves extracting a foreground object from one image and pasting it into another image through Image harmonization algorithms (IHAs), which aim to adjust the appearance of the foreground object to better match the…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Zitong Xu , Huiyu Duan , Guangji Ma , Liu Yang , Jiarui Wang , Qingbo Wu , Xiongkuo Min , Guangtao Zhai , Patrick Le Callet

With the development of rendering techniques, computer graphics generated images (CGIs) have been widely used in practical application scenarios such as architecture design, video games, simulators, movies, etc. Different from natural scene…

Graphics · Computer Science 2022-06-13 Tao Wang , Zicheng Zhang , Wei Sun , Xiongkuo Min , Wei Lu , Guangtao Zhai

We investigate the perceived visual complexity (VC) in data visualizations using objective image-based metrics. We collected VC scores through a large-scale crowdsourcing experiment involving 349 participants and 1,800 visualization images.…

Human-Computer Interaction · Computer Science 2025-11-20 Mengdi Chu , Zefeng Qiu , Meng Ling , Shuning Jiang , Robert S. Laramee , Michael Sedlmair , Jian Chen

In machine learning, research has traditionally focused on model development, with relatively less attention paid to training data. As model architectures have matured and marginal gains from further refinements diminish, data quality has…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Pei-Han Chen , Szu-Chi Chung

Image captioning models are usually evaluated on their ability to describe a held-out set of images, not on their ability to generalize to unseen concepts. We study the problem of compositional generalization, which measures how well a…

Machine Learning · Computer Science 2019-11-12 Mitja Nikolaus , Mostafa Abdou , Matthew Lamm , Rahul Aralikatte , Desmond Elliott

Objective visual quality assessment of 3D models is a fundamental issue in computer graphics. Quality assessment metrics may allow a wide range of processes to be guided and evaluated, such as level of detail creation, compression,…

Computer Vision and Pattern Recognition · Computer Science 2021-02-09 Jinjiang Guo , Vincent Vidal , Irene Cheng , Anup Basu , Atilla Baskurt , Guillaume Lavoue

Benefiting from the advancement of computer vision, natural language processing and information retrieval techniques, visual question answering (VQA), which aims to answer questions about an image or a video, has received lots of attentions…

Computer Vision and Pattern Recognition · Computer Science 2019-05-14 Yangyang Guo , Zhiyong Cheng , Liqiang Nie , Yibing Liu , Yinglong Wang , Mohan Kankanhalli

This tutorial provides the audience with the basic theories, methodologies, and current progresses of image quality assessment (IQA). From an actionable perspective, we will first revisit several subjective quality assessment methodologies,…

Computer Vision and Pattern Recognition · Computer Science 2021-10-20 Kede Ma , Yuming Fang

Image colorization aims to add color information to a grayscale image in a realistic way. Recent methods mostly rely on deep learning strategies. While learning to automatically colorize an image, one can define well-suited objective…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Coloma Ballester , Aurélie Bugeau , Hernan Carrillo , Michaël Clément , Rémi Giraud , Lara Raad , Patricia Vitoria