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Traditional video quality assessment (VQA) methods evaluate localized picture quality and video score is predicted by temporally aggregating frame scores. However, video quality exhibits different characteristics from static image quality…

Image and Video Processing · Electrical Eng. & Systems 2020-03-05 Munan Xu , Junming Chen , Haiqiang Wang , Shan Liu , Ge Li , Zhiqiang Bai

Dynamic Digital Humans (DDHs) are 3D digital models that are animated using predefined motions and are inevitably bothered by noise/shift during the generation process and compression distortion during the transmission process, which needs…

Computer Vision and Pattern Recognition · Computer Science 2023-10-25 Zicheng Zhang , Yingjie Zhou , Wei Sun , Xiongkuo Min , Guangtao Zhai

In video coding, compressed videos with certain and constant quality can ensure quality of experience (QoE). To this end, we propose in this paper a novel PID-based quality control (PQC) method for video coding. Specifically, a formulation…

Multimedia · Computer Science 2017-10-30 Yuhang Song , Mai Xu , Shengxi Li

The design of image and video quality assessment (QA) algorithms is extremely important to benchmark and calibrate user experience in modern visual systems. A major drawback of the state-of-the-art QA methods is their limited ability to…

Image and Video Processing · Electrical Eng. & Systems 2025-12-30 Shankhanil Mitra , Diptanu De , Shika Rao , Rajiv Soundararajan

The rapid advancement of AI-generated multimodal video-audio content has raised significant concerns regarding information security and content authenticity. Existing synthetic video datasets predominantly focus on the visual modality…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Mengxue Hu , Yunfeng Diao , Changtao Miao , Zhiqing Guo , Jianshu Li , Zhe Li , Joey Tianyi Zhou

Vector Quantized Variational Autoencoders (VQ-VAEs) are fundamental models that compress continuous visual data into discrete tokens. Existing methods have tried to improve the quantization strategy for better reconstruction quality,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Mingkai Jia , Wei Yin , Xiaotao Hu , Jiaxin Guo , Xiaoyang Guo , Qian Zhang , Xiao-Xiao Long , Ping Tan

This paper introduces LongViTU, a large-scale (~121k QA pairs, ~900h videos), automatically generated dataset for long-form video understanding. We propose a systematic approach that organizes videos into a hierarchical tree structure for…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Rujie Wu , Xiaojian Ma , Hai Ci , Yue Fan , Yuxuan Wang , Haozhe Zhao , Qing Li , Yizhou Wang

The rapid advancement of generative models has led to a growing volume of AI-generated videos, making the automatic quality assessment of such videos increasingly important. Existing AI-generated content video quality assessment (AIGC-VQA)…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Minghao Zou , Gen Liu , Guanghui Yue , Baoquan Zhao , Zhihua Wang , Paul L. Rosin , Hantao Liu , Wei Zhou

Vision Language Models (VLMs) are central to Visual Question Answering (VQA) systems and are typically deployed in the cloud due to their high computational demands. However, this cloud-only approach underutilizes edge computational…

Computer Vision and Pattern Recognition · Computer Science 2026-04-08 Xiao Liu , Lijun Zhang , Deepak Ganesan , Hui Guan

Visual encoding constitutes the basis of large multimodal models (LMMs) in understanding the visual world. Conventional LMMs process images in fixed sizes and limited resolutions, while recent explorations in this direction are limited in…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Ruyi Xu , Yuan Yao , Zonghao Guo , Junbo Cui , Zanlin Ni , Chunjiang Ge , Tat-Seng Chua , Zhiyuan Liu , Maosong Sun , Gao Huang

As research on neural volumetric video reconstruction and compression flourishes, there is a need for diverse and realistic datasets, which can be used to develop and validate reconstruction and compression models. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2026-04-23 Adrian Azzarelli , Ge Gao , Ho Man Kwan , Fan Zhang , Nantheera Anantrasirichai , Ollie Moolan-Feroze , David Bull

Gaussian Splatting (GS) has emerged as an efficient representation for high-quality 3D reconstruction and novel view synthesis. However, its large model size poses challenges for storage and transmission. While several GS compression…

Image and Video Processing · Electrical Eng. & Systems 2026-05-27 Pedro Martin , António Rodrigues , João Ascenso , Maria Paula Queluz

In recent years, large amounts of effort have been put into pushing forward the real-world application of dynamic digital human (DDH). However, most current quality assessment research focuses on evaluating static 3D models and usually…

Computer Vision and Pattern Recognition · Computer Science 2023-08-29 Zicheng Zhang , Yingjie Zhou , Wei Sun , Wei Lu , Xiongkuo Min , Yu Wang , Guangtao Zhai

Video quality assessment (VQA) aims to objectively quantify perceptual quality degradation in alignment with human visual perception. Despite recent advances, existing VQA models still suffer from two critical limitations: \textit{poor…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Linhan Cao , Wei Sun , Weixia Zhang , Xiangyang Zhu , Jun Jia , Kaiwei Zhang , Dandan Zhu , Guangtao Zhai , Xiongkuo Min

Video technology is advancing toward Ultra High Definition (UHD) and High Dynamic Range (HDR), which intensifies the need for higher compression efficiency for these high-specification videos. Beyond advances in traditional codecs, neural…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Jiayi Wang , Lichun Zhang , Xiaoqi Zhuang , Jiaqi Zhang , Lu Yu , Yin Zhao

Video question-answering (QA) is a core task in video understanding. Evaluating the quality of video QA and video caption data quality for training video large language models (VideoLLMs) is an essential challenge. Although various methods…

Computer Vision and Pattern Recognition · Computer Science 2025-02-07 Hao Liang , Zirong Chen , Hejun Dong , Wentao Zhang

The rapid development of diffusion models has greatly advanced AI-generated videos in terms of length and consistency recently, yet assessing AI-generated videos still remains challenging. Previous approaches have often focused on…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Jiaze Li , Haoran Xu , Shiding Zhu , Junwei He , Haozhao Wang

High Dynamic Range (HDR) videos are able to represent wider ranges of contrasts and colors than Standard Dynamic Range (SDR) videos, giving more vivid experiences. Due to this, HDR videos are expected to grow into the dominant video…

Image and Video Processing · Electrical Eng. & Systems 2024-03-25 Abhinau K. Venkataramanan , Alan C. Bovik

This paper presents a comprehensive review of the 1st Challenge on Video Quality Enhancement for Video Conferencing held at the NTIRE workshop at CVPR 2025, and highlights the problem statement, datasets, proposed solutions, and results.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Varun Jain , Zongwei Wu , Quan Zou , Louis Florentin , Henrik Turbell , Sandeep Siddhartha , Radu Timofte , others

Current deep video quality assessment (VQA) methods are usually with high computational costs when evaluating high-resolution videos. This cost hinders them from learning better video-quality-related representations via end-to-end training.…

Computer Vision and Pattern Recognition · Computer Science 2022-07-07 Haoning Wu , Chaofeng Chen , Jingwen Hou , Liang Liao , Annan Wang , Wenxiu Sun , Qiong Yan , Weisi Lin