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Video question answering (VideoQA) is challenging given its multimodal combination of visual understanding and natural language understanding. While existing approaches seldom leverage the appearance-motion information in the video at…

计算机视觉与模式识别 · 计算机科学 2021-09-13 Min Peng , Chongyang Wang , Yuan Gao , Yu Shi , Xiang-Dong Zhou

In learning vision-language representations from web-scale data, the contrastive language-image pre-training (CLIP) mechanism has demonstrated a remarkable performance in many vision tasks. However, its application to the widely studied…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Fengchuang Xing , Mingjie Li , Yuan-Gen Wang , Guopu Zhu , Xiaochun Cao

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…

图像与视频处理 · 电气工程与系统科学 2020-03-05 Munan Xu , Junming Chen , Haiqiang Wang , Shan Liu , Ge Li , Zhiqiang Bai

Spatio-Temporal video grounding (STVG) focuses on retrieving the spatio-temporal tube of a specific object depicted by a free-form textual expression. Existing approaches mainly treat this complicated task as a parallel frame-grounding…

计算机视觉与模式识别 · 计算机科学 2022-12-02 Yang Jin , Yongzhi Li , Zehuan Yuan , Yadong Mu

We consider the problem of capturing distortions arising from changes in frame rate as part of Video Quality Assessment (VQA). Variable frame rate (VFR) videos have become much more common, and streamed videos commonly range from 30 frames…

图像与视频处理 · 电气工程与系统科学 2022-05-24 Pavan C. Madhusudana , Neil Birkbeck , Yilin Wang , Balu Adsumilli , Alan C. Bovik

Large-scale text-to-image (T2I) diffusion models have been extended for text-guided video editing, yielding impressive zero-shot video editing performance. Nonetheless, the generated videos usually show spatial irregularities and temporal…

计算机视觉与模式识别 · 计算机科学 2024-08-29 Yuanzhi Wang , Yong Li , Xiaoya Zhang , Xin Liu , Anbo Dai , Antoni B. Chan , Zhen Cui

Video quality assessment (VQA) aims to simulate the human perception of video quality, which is influenced by factors ranging from low-level color and texture details to high-level semantic content. To effectively model these complicated…

计算机视觉与模式识别 · 计算机科学 2023-04-14 Kai Zhao , Kun Yuan , Ming Sun , Xing Wen

The explosion of user-generated videos stimulates a great demand for no-reference video quality assessment (NR-VQA). Inspired by our observation on the actions of human annotation, we put forward a Divide and Conquer Video Quality Estimator…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Zutong Li , Lei Yang

We propose a new prototype model for no-reference video quality assessment (VQA) based on the natural statistics of space-time chips of videos. Space-time chips (ST-chips) are a new, quality-aware feature space which we define as space-time…

图像与视频处理 · 电气工程与系统科学 2020-08-25 Joshua P. Ebenezer , Zaixi Shang , Yongjun Wu , Hai Wei , Alan C. Bovik

The objective of non-reference video quality assessment is to evaluate the quality of distorted video without access to reference high-definition references. In this study, we introduce an enhanced spatial perception module, pre-trained on…

计算机视觉与模式识别 · 计算机科学 2024-01-17 Zihao Yu , Fengbin Guan , Yiting Lu , Xin Li , Zhibo Chen

Visual (image, video) quality assessments can be modelled by visual features in different domains, e.g., spatial, frequency, and temporal domains. Perceptual mechanisms in the human visual system (HVS) play a crucial role in generation of…

图像与视频处理 · 电气工程与系统科学 2022-08-23 Junyong You , Zheng Zhang

Video inpainting aims to fill the given spatiotemporal holes with realistic appearance but is still a challenging task even with prosperous deep learning approaches. Recent works introduce the promising Transformer architecture into deep…

计算机视觉与模式识别 · 计算机科学 2021-04-15 Rui Liu , Hanming Deng , Yangyi Huang , Xiaoyu Shi , Lewei Lu , Wenxiu Sun , Xiaogang Wang , Jifeng Dai , Hongsheng Li

Videos convey rich information. Dynamic spatio-temporal relationships between people/objects, and diverse multimodal events are present in a video clip. Hence, it is important to develop automated models that can accurately extract such…

计算与语言 · 计算机科学 2020-05-14 Hyounghun Kim , Zineng Tang , Mohit Bansal

Video restoration (e.g., video super-resolution) aims to restore high-quality frames from low-quality frames. Different from single image restoration, video restoration generally requires to utilize temporal information from multiple…

计算机视觉与模式识别 · 计算机科学 2022-06-16 Jingyun Liang , Jiezhang Cao , Yuchen Fan , Kai Zhang , Rakesh Ranjan , Yawei Li , Radu Timofte , Luc Van Gool

Video quality assessment (VQA) is a challenging problem due to the numerous factors that can affect the perceptual quality of a video, \eg, content attractiveness, distortion type, motion pattern, and level. However, annotating the Mean…

计算机视觉与模式识别 · 计算机科学 2024-05-29 Kun Yuan , Hongbo Liu , Mading Li , Muyi Sun , Ming Sun , Jiachao Gong , Jinhua Hao , Chao Zhou , Yansong Tang

The rapid growth of user-generated (video) content (UGC) has driven increased demand for research on no-reference (NR) perceptual video quality assessment (VQA). NR-VQA is a key component for large-scale video quality monitoring in social…

图像与视频处理 · 电气工程与系统科学 2025-08-15 Xinyi Wang , Angeliki Katsenou , David Bull

Video face restoration faces a critical challenge in maintaining temporal consistency while recovering fine facial details from degraded inputs. This paper presents a novel approach that extends Vector-Quantized Variational Autoencoders…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Yan Chen , Hanlin Shang , Ce Liu , Yuxuan Chen , Hui Li , Weihao Yuan , Hao Zhu , Zilong Dong , Siyu Zhu

Applying single image Monocular Depth Estimation (MDE) models to video sequences introduces significant temporal instability and flickering artifacts. We propose a novel approach that adapts any state-of-the-art image-based (depth)…

计算机视觉与模式识别 · 计算机科学 2026-01-07 Ivan Sobko , Hayko Riemenschneider , Markus Gross , Christopher Schroers

To build Video Question Answering (VideoQA) systems capable of assisting humans in daily activities, seeking answers from long-form videos with diverse and complex events is a must. Existing multi-modal VQA models achieve promising…

计算机视觉与模式识别 · 计算机科学 2022-12-20 Difei Gao , Luowei Zhou , Lei Ji , Linchao Zhu , Yi Yang , Mike Zheng Shou

Audio-visual quality assessment (AVQA) is essential for streaming, teleconferencing, and immersive media. In realistic streaming scenarios, distortions are often asymmetric, where one modality may be severely degraded while the other…

多媒体 · 计算机科学 2026-05-05 Mayesha Maliha R. Mithila , Mylene C. Q. Farias