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We propose AdapTok, an adaptive temporal causal video tokenizer that can flexibly allocate tokens for different frames based on video content. AdapTok is equipped with a block-wise masking strategy that randomly drops tail tokens of each…

计算机视觉与模式识别 · 计算机科学 2025-10-15 Yan Li , Changyao Tian , Renqiu Xia , Ning Liao , Weiwei Guo , Junchi Yan , Hongsheng Li , Jifeng Dai , Hao Li , Xue Yang

Recent advances in computing, communication, and data storage have led to an increasing number of large digital libraries publicly available on the Internet. Main problem of content-based video retrieval is inferring semantics from raw…

多媒体 · 计算机科学 2014-04-18 Hadi Restgou Haghi , Mohammadreza Kangavari , Behrang QasemiZadeh

Modern video data management systems store videos as a single encoded file, which significantly limits possible storage level optimizations. We design, implement, and evaluate TASM, a new tile-based storage manager for video data. TASM uses…

数据库 · 计算机科学 2021-03-02 Maureen Daum , Brandon Haynes , Dong He , Amrita Mazumdar , Magdalena Balazinska

We study video reconstruction from ultra-low-bitrate representations, where the primary challenge shifts from encoding to decoding. In this regime, reconstruction with classical and neural codecs introduces blur, while generative and…

计算机视觉与模式识别 · 计算机科学 2026-05-11 Cem Eteke , Batuhan Tosun , Martin Piccolrovazzi , Alexander Griessel , Wolfgang Kellerer , Eckehard Steinbach

Multi-view video reconstruction plays a vital role in computer vision, enabling applications in film production, virtual reality, and motion analysis. While recent advances such as 4D Gaussian Splatting (4DGS) have demonstrated impressive…

计算机视觉与模式识别 · 计算机科学 2025-11-17 Zhixin Xu , Hengyu Zhou , Yuan Liu , Wenhan Xue , Hao Pan , Wenping Wang , Bin Wang

To fit diverse display and bandwidth constraints, high-frame-rate videos are temporally downscaled to low-frame-rate (LFR) and later upscaled, requiring joint optimization for effective frame-rate rescaling. However, existing methods…

图像与视频处理 · 电气工程与系统科学 2026-05-18 Xinmin Feng , Li Li , Dong Liu , Feng Wu

Recent advances in Large Language Models (LLMs) have led to significant breakthroughs in video understanding. However, existing models still struggle with long video processing due to the context length constraint of LLMs and the vast…

计算机视觉与模式识别 · 计算机科学 2025-04-15 Haoran Hao , Jiaming Han , Yiyuan Zhang , Xiangyu Yue

We propose a novel method for real-time face alignment in videos based on a recurrent encoder-decoder network model. Our proposed model predicts 2D facial point heat maps regularized by both detection and regression loss, while uniquely…

计算机视觉与模式识别 · 计算机科学 2018-01-19 Xi Peng , Rogerio S. Feris , Xiaoyu Wang , Dimitris N. Metaxas

Semi-Supervised Learning can be more beneficial for the video domain compared to images because of its higher annotation cost and dimensionality. Besides, any video understanding task requires reasoning over both spatial and temporal…

计算机视觉与模式识别 · 计算机科学 2023-03-30 Ishan Rajendrakumar Dave , Mamshad Nayeem Rizve , Chen Chen , Mubarak Shah

The strong demand of autonomous driving in the industry has lead to strong interest in 3D object detection and resulted in many excellent 3D object detection algorithms. However, the vast majority of algorithms only model single-frame data,…

计算机视觉与模式识别 · 计算机科学 2020-11-30 Zhenxun Yuan , Xiao Song , Lei Bai , Wengang Zhou , Zhe Wang , Wanli Ouyang

Video copy localization aims to precisely localize all the copied segments within a pair of untrimmed videos in video retrieval applications. Previous methods typically start from frame-to-frame similarity matrix generated by cosine…

计算机视觉与模式识别 · 计算机科学 2022-11-28 Sifeng He , Yue He , Minlong Lu , Chen Jiang , Xudong Yang , Feng Qian , Xiaobo Zhang , Lei Yang , Jiandong Zhang

Computer-assisted surgery (CAS) aims to provide the surgeon with the right type of assistance at the right moment. Such assistance systems are especially relevant in laparoscopic surgery, where CAS can alleviate some of the drawbacks that…

The current research focus on Content-Based Video Retrieval requires higher-level video representation describing the long-range semantic dependencies of relevant incidents, events, etc. However, existing methods commonly process the frames…

计算机视觉与模式识别 · 计算机科学 2020-10-01 Jie Shao , Xin Wen , Bingchen Zhao , Xiangyang Xue

Accurate and efficient discrete video tokenization is essential for long video sequences processing. Yet, the inherent complexity and variable information density of videos present a significant bottleneck for current tokenizers, which…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Haotian Ye , Qiyuan He , Jiaqi Han , Puheng Li , Jiaojiao Fan , Zekun Hao , Fitsum Reda , Yogesh Balaji , Huayu Chen , Sheng Liu , Angela Yao , James Zou , Stefano Ermon , Haoxiang Wang , Ming-Yu Liu

Two-stream convolutional networks have shown strong performance in video action recognition tasks. The key idea is to learn spatiotemporal features by fusing convolutional networks spatially and temporally. However, it remains unclear how…

计算机视觉与模式识别 · 计算机科学 2019-03-05 Yunbo Wang , Mingsheng Long , Jianmin Wang , Philip S. Yu

In recent years, video streaming applications have proliferated the demand for Video Quality Assessment VQA). Reduced reference video quality assessment (RR-VQA) is a category of VQA where certain features (e.g., texture, edges) of the…

In this paper, we introduce a novel unsupervised network to denoise microscopy videos featured by image sequences captured by a fixed location microscopy camera. Specifically, we propose a DeepTemporal Interpolation method, leveraging a…

图像与视频处理 · 电气工程与系统科学 2024-04-19 Mary Aiyetigbo , Alexander Korte , Ethan Anderson , Reda Chalhoub , Peter Kalivas , Feng Luo , Nianyi Li

Text-to-video generation poses significant challenges due to the inherent complexity of video data, which spans both temporal and spatial dimensions. It introduces additional redundancy, abrupt variations, and a domain gap between language…

计算机视觉与模式识别 · 计算机科学 2025-03-17 Ziqin Zhou , Yifan Yang , Yuqing Yang , Tianyu He , Houwen Peng , Kai Qiu , Qi Dai , Lili Qiu , Chong Luo , Lingqiao Liu

Due to a variety of motions across different frames, it is highly challenging to learn an effective spatiotemporal representation for accurate video saliency prediction (VSP). To address this issue, we develop an effective spatiotemporal…

计算机视觉与模式识别 · 计算机科学 2020-01-03 Jin Chen , Huihui Song , Kaihua Zhang , Bo Liu , Qingshan Liu

Existing video super-resolution (VSR) methods generally adopt a recurrent propagation network to extract spatio-temporal information from the entire video sequences, exhibiting impressive performance. However, the key components in…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Hao Li , Jiangxin Dong , Jinshan Pan