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Video tokenizers are essential for latent video diffusion models, converting raw video data into spatiotemporally compressed latent spaces for efficient training. However, extending state-of-the-art video tokenizers to achieve a temporal…

计算机视觉与模式识别 · 计算机科学 2025-08-05 Aniruddha Mahapatra , Long Mai , David Bourgin , Yitian Zhang , Feng Liu

While image-text representation learning has become very popular in recent years, existing models tend to lack spatial awareness and have limited direct applicability for dense understanding tasks. For this reason, self-supervised…

Existing pedestrian attribute recognition (PAR) algorithms are mainly developed based on a static image, however, the performance is unreliable in challenging scenarios, such as heavy occlusion, motion blur, etc. In this work, we propose to…

计算机视觉与模式识别 · 计算机科学 2024-04-30 Xiao Wang , Qian Zhu , Jiandong Jin , Jun Zhu , Futian Wang , Bo Jiang , Yaowei Wang , Yonghong Tian

Understanding temporal dynamics of video is an essential aspect of learning better video representations. Recently, transformer-based architectural designs have been extensively explored for video tasks due to their capability to capture…

计算机视觉与模式识别 · 计算机科学 2022-07-20 Sukmin Yun , Jaehyung Kim , Dongyoon Han , Hwanjun Song , Jung-Woo Ha , Jinwoo Shin

In low-visibility marine environments characterized by turbidity and darkness, acoustic cameras serve as visual sensors capable of generating high-resolution 2D sonar images. However, acoustic camera images are interfered with by complex…

计算机视觉与模式识别 · 计算机科学 2024-06-06 Xiaoteng Zhou , Katsunori Mizuno , Yilong Zhang

In this paper, we propose to learn temporal embeddings of video frames for complex video analysis. Large quantities of unlabeled video data can be easily obtained from the Internet. These videos possess the implicit weak label that they are…

计算机视觉与模式识别 · 计算机科学 2015-05-05 Vignesh Ramanathan , Kevin Tang , Greg Mori , Li Fei-Fei

Though significant progress in human pose and shape recovery from monocular RGB images has been made in recent years, obtaining 3D human motion with high accuracy and temporal consistency from videos remains challenging. Existing…

计算机视觉与模式识别 · 计算机科学 2023-11-17 Ming Chen , Yan Zhou , Weihua Jian , Pengfei Wan , Zhongyuan Wang

Recently, temporal action localization (TAL) has garnered significant interest in information retrieval community. However, existing supervised/weakly supervised methods are heavily dependent on extensive labeled temporal boundaries and…

计算机视觉与模式识别 · 计算机科学 2025-04-01 Yupeng Hu , Han Jiang , Hao Liu , Kun Wang , Haoyu Tang , Liqiang Nie

Obtaining pairs of low/normal-light videos, with motions, is more challenging than still images, which raises technical issues and poses the technical route of unpaired learning as a critical role. This paper makes endeavors in the…

计算机视觉与模式识别 · 计算机科学 2024-08-23 Lingyu Zhu , Wenhan Yang , Baoliang Chen , Hanwei Zhu , Zhangkai Ni , Qi Mao , Shiqi Wang

We propose a new formulation of temporal action detection (TAD) with denoising diffusion, DiffTAD in short. Taking as input random temporal proposals, it can yield action proposals accurately given an untrimmed long video. This presents a…

计算机视觉与模式识别 · 计算机科学 2023-07-17 Sauradip Nag , Xiatian Zhu , Jiankang Deng , Yi-Zhe Song , Tao Xiang

Deep learning approaches in image processing predominantly resort to supervised learning. A majority of methods for image denoising are no exception to this rule and hence demand pairs of noisy and corresponding clean images. Only recently…

图像与视频处理 · 电气工程与系统科学 2020-10-02 Priyatham Kattakinda , A. N. Rajagopalan

Deep image prior (DIP) serves as a good inductive bias for diverse inverse problems. Among them, denoising is known to be particularly challenging for the DIP due to noise fitting with the requirement of an early stopping. To address the…

图像与视频处理 · 电气工程与系统科学 2021-08-31 Yeonsik Jo , Se Young Chun , Jonghyun Choi

In this paper, we propose an unsupervised video object co-segmentation framework based on the primary object proposals to extract the common foreground object(s) from a given video set. In addition to the objectness attributes and motion…

计算机视觉与模式识别 · 计算机科学 2018-02-12 Michael Ying Yang , Matthias Reso , Jun Tang , Wentong Liao , Bodo Rosenhahn

Many video analysis tasks require temporal localization thus detection of content changes. However, most existing models developed for these tasks are pre-trained on general video action classification tasks. This is because large scale…

计算机视觉与模式识别 · 计算机科学 2021-03-29 Mengmeng Xu , Juan-Manuel Perez-Rua , Victor Escorcia , Brais Martinez , Xiatian Zhu , Li Zhang , Bernard Ghanem , Tao Xiang

Temporal action segmentation in untrimmed videos has gained increased attention recently. However, annotating action classes and frame-wise boundaries is extremely time consuming and cost intensive, especially on large-scale datasets. To…

计算机视觉与模式识别 · 计算机科学 2023-03-10 Wei Lin , Anna Kukleva , Horst Possegger , Hilde Kuehne , Horst Bischof

Current state-of-the-art classification and detection algorithms rely on supervised training. In this work we study unsupervised feature learning in the context of temporally coherent video data. We focus on feature learning from unlabeled…

计算机视觉与模式识别 · 计算机科学 2015-09-09 Ross Goroshin , Joan Bruna , Jonathan Tompson , David Eigen , Yann LeCun

While recent large-scale video-language pre-training made great progress in video question answering, the design of spatial modeling of video-language models is less fine-grained than that of image-language models; existing practices of…

计算机视觉与模式识别 · 计算机科学 2022-10-11 Hsin-Ying Lee , Hung-Ting Su , Bing-Chen Tsai , Tsung-Han Wu , Jia-Fong Yeh , Winston H. Hsu

Applying an image processing algorithm independently to each video frame often leads to temporal inconsistency in the resulting video. To address this issue, we present a novel and general approach for blind video temporal consistency. Our…

计算机视觉与模式识别 · 计算机科学 2022-01-28 Chenyang Lei , Yazhou Xing , Hao Ouyang , Qifeng Chen

Recent works demonstrated the usefulness of temporal coherence to regularize supervised training or to learn invariant features with deep architectures. In particular, enforcing smooth output changes while presenting temporally-closed…

机器学习 · 计算机科学 2016-01-05 Davide Maltoni , Vincenzo Lomonaco

Video action recognition has made significant strides, but challenges remain in effectively using both spatial and temporal information. While existing methods often focus on either spatial features (e.g., object appearance) or temporal…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Huilin Chen , Lei Wang , Yifan Chen , Tom Gedeon , Piotr Koniusz