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Three-dimensional (3D) point cloud, as an emerging visual media format, is increasingly favored by consumers as it can provide more realistic visual information than two-dimensional (2D) data. Similar to 2D plane images and videos, point…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Wu Chen , Qiuping Jiang , Wei Zhou , Feng Shao , Guangtao Zhai , Weisi Lin

Despite substantial efforts dedicated to the design of heuristic models for omnidirectional (i.e., 360$^\circ$) image quality assessment (OIQA), a conspicuous gap remains due to the lack of consideration for the diversity of viewing…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Xiangjie Sui , Hanwei Zhu , Xuelin Liu , Yuming Fang , Shiqi Wang , Zhou Wang

Image Quality Assessment (IQA) is of great value in the workflow of Magnetic Resonance Imaging (MRI)-based analysis. Blind IQA (BIQA) methods are especially required since high-quality reference MRI images are usually not available.…

Image and Video Processing · Electrical Eng. & Systems 2021-07-16 Kehan Qi , Haoran Li , Chuyu Rong , Yu Gong , Cheng Li , Hairong Zheng , Shanshan Wang

The 4K content can deliver a more immersive visual experience to consumers due to the huge improvement of spatial resolution. However, existing blind image quality assessment (BIQA) methods are not suitable for the original and upscaled 4K…

Multimedia · Computer Science 2022-06-10 Wei Lu , Wei Sun , Xiongkuo Min , Wenhan Zhu , Quan Zhou , Jun He , Qiyuan Wang , Zicheng Zhang , Tao Wang , Guangtao Zhai

Many super-resolution (SR) algorithms have been proposed to increase image resolution. However, full-reference (FR) image quality assessment (IQA) metrics for comparing and evaluating different SR algorithms are limited. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Yixiao Li , Xiaoyuan Yang , Guanghui Yue , Jun Fu , Qiuping Jiang , Xu Jia , Paul L. Rosin , Hantao Liu , Wei Zhou

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

We present a deep neural network-based approach to image quality assessment (IQA). The network is trained end-to-end and comprises ten convolutional layers and five pooling layers for feature extraction, and two fully connected layers for…

Computer Vision and Pattern Recognition · Computer Science 2017-12-11 Sebastian Bosse , Dominique Maniry , Klaus-Robert Müller , Thomas Wiegand , Wojciech Samek

Blind Omnidirectional Image Quality Assessment (BOIQA) aims to objectively assess the human perceptual quality of omnidirectional images (ODIs) without relying on pristine-quality image information. It is becoming more significant with the…

Computer Vision and Pattern Recognition · Computer Science 2023-10-11 Tianhe Wu , Shuwei Shi , Haoming Cai , Mingdeng Cao , Jing Xiao , Yinqiang Zheng , Yujiu Yang

Omnidirectional images (ODIs), also known as 360-degree images, enable viewers to explore all directions of a given 360-degree scene from a fixed point. Designing an immersive imaging system with ODI is challenging as such systems require…

Image and Video Processing · Electrical Eng. & Systems 2021-01-27 Cagri Ozcinar , Aakanksha Rana

Omnidirectional image quality assessment (OIQA) has been widely investigated in the past few years and achieved much success. However, most of existing studies are dedicated to solve the uniform distortion problem in OIQA, which has a…

Image and Video Processing · Electrical Eng. & Systems 2025-01-22 Jiebin Yan , Jiale Rao , Junjie Chen , Ziwen Tan , Weide Liu , Yuming Fang

The fast growing application of omnidirectional images calls for effective approaches for omnidirectional image quality assessment (OIQA). Existing OIQA methods have been developed and tested on homogeneously distorted omnidirectional…

Computer Vision and Pattern Recognition · Computer Science 2025-02-24 Jiebin Yan , Ziwen Tan , Yuming Fang , Junjie Chen , Wenhui Jiang , Zhou Wang

Due to its safety-critical property, the image-based diagnosis is desired to achieve robustness on out-of-distribution (OOD) samples. A natural way towards this goal is capturing only clinically disease-related features, which is composed…

Computer Vision and Pattern Recognition · Computer Science 2022-04-22 Churan Wang , Jing Li , Xinwei Sun , Fandong Zhang , Yizhou Yu , Yizhou Wang

The goal in a blind image quality assessment (BIQA) model is to simulate the process of evaluating images by human eyes and accurately assess the quality of the image. Although many approaches effectively identify degradation, they do not…

Computer Vision and Pattern Recognition · Computer Science 2021-10-14 Guangyi Yang , Yang Zhan. , Yuxuan Wang

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

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

Image quality assessment (IQA) aims to estimate human perception based image visual quality. Although existing deep neural networks (DNNs) have shown significant effectiveness for tackling the IQA problem, it still needs to improve the…

Image and Video Processing · Electrical Eng. & Systems 2020-12-04 Wei Zhou , Zhibo Chen

There has emerged a growing interest in exploring efficient quality assessment algorithms for image super-resolution (SR). However, employing deep learning techniques, especially dual-branch algorithms, to automatically evaluate the visual…

Multimedia · Computer Science 2024-03-22 Yixiao Li , Xiaoyuan Yang , Jun Fu , Guanghui Yue , Wei Zhou

Processing information on 3D objects requires methods stable to rigid-body transformations, in particular rotations, of the input data. In image processing tasks, convolutional neural networks achieve this property using…

Quantitative Methods · Quantitative Biology 2021-01-07 Ilia Igashov , Nikita Pavlichenko , Sergei Grudinin

Assessing the visual quality of High Dynamic Range (HDR) images is an unexplored and an interesting research topic that has become relevant with the current boom in HDR technology. We propose a new convolutional neural network based model…

Multimedia · Computer Science 2017-12-21 Navaneeth Kamballur Kottayil , Giuseppe Valenzise , Frederic Dufaux , Irene Cheng

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