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Static image action recognition, which aims to recognize action based on a single image, usually relies on expensive human labeling effort such as adequate labeled action images and large-scale labeled image dataset. In contrast, abundant…

Computer Vision and Pattern Recognition · Computer Science 2019-12-03 Yiyi Zhang , Li Niu , Ziqi Pan , Meichao Luo , Jianfu Zhang , Dawei Cheng , Liqing Zhang

While the shortage of explicit action data limits Vision-Language-Action (VLA) models, human action videos offer a scalable yet unlabeled data source. A critical challenge in utilizing large-scale human video datasets lies in transforming…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Dujun Nie , Fengjiao Chen , Qi Lv , Jun Kuang , Xiaoyu Li , Xuezhi Cao , Xunliang Cai

The use of self-supervised pre-training has emerged as a promising approach to enhance the performance of many different visual tasks. In this context, recent approaches have employed the Masked Image Modeling paradigm, which pre-trains a…

Computer Vision and Pattern Recognition · Computer Science 2025-01-23 Lorenzo Baraldi , Roberto Amoroso , Marcella Cornia , Lorenzo Baraldi , Andrea Pilzer , Rita Cucchiara

Recognizing human actions in video sequences, known as Human Action Recognition (HAR), is a challenging task in pattern recognition. While Convolutional Neural Networks (ConvNets) have shown remarkable success in image recognition, they are…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Nguyen Huu Phong , Bernardete Ribeiro

Understanding the workflow of surgical procedures in complex operating rooms requires a deep understanding of the interactions between clinicians and their environment. Surgical activity recognition (SAR) is a key computer vision task that…

Computer Vision and Pattern Recognition · Computer Science 2025-02-20 Idris Hamoud , Vinkle Srivastav , Muhammad Abdullah Jamal , Didier Mutter , Omid Mohareri , Nicolas Padoy

Temporal action detection (TAD) with end-to-end training often suffers from the pain of huge demand for computing resources due to long video duration. In this work, we propose an efficient temporal action detector (ETAD) that can train…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Shuming Liu , Mengmeng Xu , Chen Zhao , Xu Zhao , Bernard Ghanem

Video action recognition, which is topical in computer vision and video analysis, aims to allocate a short video clip to a pre-defined category such as brushing hair or climbing stairs. Recent works focus on action recognition with deep…

Computer Vision and Pattern Recognition · Computer Science 2019-08-28 Yuqi Huo , Xiaoli Xu , Yao Lu , Yulei Niu , Zhiwu Lu , Ji-Rong Wen

This work targets to merge various Vision Transformers (ViTs) trained on different tasks (i.e., datasets with different object categories) or domains (i.e., datasets with the same categories but different environments) into one unified…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Peng Ye , Chenyu Huang , Mingzhu Shen , Tao Chen , Yongqi Huang , Yuning Zhang , Wanli Ouyang

Adaptive sampling that exploits the spatiotemporal redundancy in videos is critical for always-on action recognition on wearable devices with limited computing and battery resources. The commonly used fixed sampling strategy is not…

Computer Vision and Pattern Recognition · Computer Science 2022-07-18 Khoi-Nguyen C. Mac , Minh N. Do , Minh P. Vo

In this paper, we present a comparative analysis of various self-supervised Vision Transformers (ViTs), focusing on their local representative power. Inspired by large language models, we examine the abilities of ViTs to perform various…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Ani Vanyan , Alvard Barseghyan , Hakob Tamazyan , Vahan Huroyan , Hrant Khachatrian , Martin Danelljan

Vision Transformers (ViTs) have emerged as state-of-the-art models for various vision tasks recently. However, their heavy computation costs remain daunting for resource-limited devices. To address this, researchers have dedicated…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Ao Wang , Hui Chen , Zijia Lin , Sicheng Zhao , Jungong Han , Guiguang Ding

Limited annotated data available for the recognition of facial expression and action units embarrasses the training of deep networks, which can learn disentangled invariant features. However, a linear model with just several parameters…

Computer Vision and Pattern Recognition · Computer Science 2017-01-16 Xiang Xiang , Trac D. Tran

In multimodal land cover classification (MLCC), a common challenge is the redundancy in data distribution, where irrelevant information from multiple modalities can hinder the effective integration of their unique features. To tackle this,…

Computer Vision and Pattern Recognition · Computer Science 2024-01-24 Jiaqing Zhang , Jie Lei , Weiying Xie , Geng Yang , Daixun Li , Yunsong Li

While Video Instance Segmentation (VIS) has seen rapid progress, current approaches struggle to predict high-quality masks with accurate boundary details. Moreover, the predicted segmentations often fluctuate over time, suggesting that…

Computer Vision and Pattern Recognition · Computer Science 2022-07-29 Lei Ke , Henghui Ding , Martin Danelljan , Yu-Wing Tai , Chi-Keung Tang , Fisher Yu

While many action recognition datasets consist of collections of brief, trimmed videos each containing a relevant action, videos in the real-world (e.g., on YouTube) exhibit very different properties: they are often several minutes long,…

Computer Vision and Pattern Recognition · Computer Science 2019-09-02 Bruno Korbar , Du Tran , Lorenzo Torresani

The use of transformers for vision tasks has challenged the traditional dominant role of convolutional neural networks (CNN) in computer vision (CV). For image classification tasks, Vision Transformer (ViT) effectively establishes spatial…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Shihua Sun , Kenechukwu Nwodo , Shridatt Sugrim , Angelos Stavrou , Haining Wang

This paper addresses temporal sentence grounding. Previous works typically solve this task by learning frame-level video features and align them with the textual information. A major limitation of these works is that they fail to…

Computer Vision and Pattern Recognition · Computer Science 2022-01-04 Daizong Liu , Xiaoye Qu , Pan Zhou , Yang Liu

We introduce a novel framework called RefineVIS for Video Instance Segmentation (VIS) that achieves good object association between frames and accurate segmentation masks by iteratively refining the representations using sequence context.…

Computer Vision and Pattern Recognition · Computer Science 2023-06-09 Andre Abrantes , Jiang Wang , Peng Chu , Quanzeng You , Zicheng Liu

We explore the capability of plain Vision Transformers (ViTs) for semantic segmentation and propose the SegVit. Previous ViT-based segmentation networks usually learn a pixel-level representation from the output of the ViT. Differently, we…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Bowen Zhang , Zhi Tian , Quan Tang , Xiangxiang Chu , Xiaolin Wei , Chunhua Shen , Yifan Liu

A key challenge with procedure planning in instructional videos lies in how to handle a large decision space consisting of a multitude of action types that belong to various tasks. To understand real-world video content, an AI agent must…

Computer Vision and Pattern Recognition · Computer Science 2023-09-15 Fen Fang , Yun Liu , Ali Koksal , Qianli Xu , Joo-Hwee Lim