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Existing Transformers for monocular 3D human shape and pose estimation typically have a quadratic computation and memory complexity with respect to the feature length, which hinders the exploitation of fine-grained information in…

计算机视觉与模式识别 · 计算机科学 2024-04-24 Xiangyu Xu , Lijuan Liu , Shuicheng Yan

Existing video-based 3D Human Mesh Recovery (HMR) methods often produce physically implausible results, stemming from their reliance on flawed intermediate 3D pose anchors and their inability to effectively model complex spatiotemporal…

计算机视觉与模式识别 · 计算机科学 2026-01-30 Hongjun Chen , Huan Zheng , Wencheng Han , Jianbing Shen

Retrieval-Augmented Generation (RAG) has emerged as a powerful paradigm for grounding large language models in external knowledge sources, improving the precision of agents responses. However, high-dimensional language model embeddings,…

机器学习 · 计算机科学 2025-04-14 Arman Khaledian , Amirreza Ghadiridehkordi , Nariman Khaledian

Accurate 3D human pose estimation from monocular videos requires effective modelling of complex spatial and temporal dependencies. However, existing methods often face challenges in efficiency and adaptability when modelling spatial and…

计算机视觉与模式识别 · 计算机科学 2026-04-07 Ruochen Li , Shuang Chen , Wenke E , Farshad Arvin , Amir Atapour-Abarghouei

Recent developments in Transformers have achieved notable strides in enhancing video comprehension. Nonetheless, the O($N^2$) computation complexity associated with attention mechanisms presents substantial computational hurdles when…

计算机视觉与模式识别 · 计算机科学 2024-03-01 Yukun Feng , Yangming Shi , Fengze Liu , Tan Yan

Learning based 6D object pose estimation methods rely on computing large intermediate pose representations and/or iteratively refining an initial estimation with a slow render-compare pipeline. This paper introduces a novel method we call…

计算机视觉与模式识别 · 计算机科学 2022-10-24 Pedro Castro , Tae-Kyun Kim

This paper proposes a probabilistic neural network developed on the basis of time-series discriminant component analysis (TSDCA) that can be used to classify high-dimensional time-series patterns. TSDCA involves the compression of…

机器学习 · 计算机科学 2019-11-15 Hideaki Hayashi , Taro Shibanoki , Keisuke Shima , Yuichi Kurita , Toshio Tsuji

Principal component analysis (PCA) is an unsupervised method for learning low-dimensional features with orthogonal projections. Multilinear PCA methods extend PCA to deal with multidimensional data (tensors) directly via tensor-to-tensor…

机器学习 · 统计学 2015-05-08 Qiquan Shi , Haiping Lu

Large-scale video-language pre-training has made remarkable strides in advancing video-language understanding tasks. However, the heavy computational burden of video encoding remains a formidable efficiency bottleneck, particularly for…

计算机视觉与模式识别 · 计算机科学 2023-10-31 Shuhuai Ren , Sishuo Chen , Shicheng Li , Xu Sun , Lu Hou

Representations that can compactly and effectively capture the temporal evolution of semantic content are important to computer vision and machine learning algorithms that operate on multi-variate time-series data. We investigate such…

计算机视觉与模式识别 · 计算机科学 2018-03-30 Anoop Cherian , Suvrit Sra , Stephen Gould , Richard Hartley

Current object detectors typically have a feature pyramid (FP) module for multi-level feature fusion (MFF) which aims to mitigate the gap between features from different levels and form a comprehensive object representation to achieve…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Zhe Chen , Jing Zhang , Yufei Xu , Dacheng Tao

Background subtraction has been a fundamental and widely studied task in video analysis, with a wide range of applications in video surveillance, teleconferencing and 3D modeling. Recently, motivated by compressive imaging, background…

计算机视觉与模式识别 · 计算机科学 2016-08-24 Wenfei Cao , Yao Wang , Jian Sun , Deyu Meng , Can Yang , Andrzej Cichocki , Zongben Xu

Transformer-based methods have recently achieved great advancement on 2D image-based vision tasks. For 3D video-based tasks such as action recognition, however, directly applying spatiotemporal transformers on video data will bring heavy…

计算机视觉与模式识别 · 计算机科学 2022-07-28 Wangmeng Xiang , Chao Li , Biao Wang , Xihan Wei , Xian-Sheng Hua , Lei Zhang

Tensor Robust Principal Component Analysis (TRPCA), which aims to recover a low-rank tensor corrupted by sparse noise, has attracted much attention in many real applications. This paper develops a new Global Weighted TRPCA method (GWTRPCA),…

机器学习 · 计算机科学 2023-01-06 Libin Wang , Yulong Wang , Shiyuan Wang , Youheng Liu , Yutao Hu , Longlong Chen , Hong Chen

Recently, flow-based methods have achieved promising success in video frame interpolation. However, electron microscopic (EM) images suffer from unstable image quality, low PSNR, and disorderly deformation. Existing flow-based interpolation…

计算机视觉与模式识别 · 计算机科学 2021-01-19 Zejin Wang , Guodong Sun , Lina Zhang , Guoqing Li , Hua Han

We extend the principal component analysis (PCA) to second-order stationary vector time series in the sense that we seek for a contemporaneous linear transformation for a $p$-variate time series such that the transformed series is segmented…

统计方法学 · 统计学 2018-12-21 Jinyuan Chang , Bin Guo , Qiwei Yao

Transformer-based 3D human pose estimation methods suffer from high computational costs due to the quadratic complexity of self-attention with respect to sequence length. Additionally, pose sequences often contain significant redundancy…

计算机视觉与模式识别 · 计算机科学 2025-10-10 Zenghao Zheng , Lianping Yang , Hegui Zhu , Mingrui Ye

One of the fundamental challenges associated with reinforcement learning (RL) is that collecting sufficient data can be both time-consuming and expensive. In this paper, we formalize a concept of time reversal symmetry in a Markov decision…

机器学习 · 计算机科学 2023-11-29 Brett Barkley , Amy Zhang , David Fridovich-Keil

Deep neural networks often degrade under distribution shifts. Although domain adaptation offers a solution, privacy constraints often prevent access to source data, making Test-Time Adaptation (TTA, which adapts using only unlabeled test…

机器学习 · 计算机科学 2025-06-10 Linjing You , Jiabao Lu , Xiayuan Huang

Recently, numerous approaches have achieved notable success in compressed video quality enhancement (VQE). However, these methods usually ignore the utilization of valuable coding priors inherently embedded in compressed videos, such as…

图像与视频处理 · 电气工程与系统科学 2024-11-21 Qiang Zhu , Jinhua Hao , Yukang Ding , Yu Liu , Qiao Mo , Ming Sun , Chao Zhou , Shuyuan Zhu