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As ultra-realistic face forgery techniques emerge, deepfake detection has attracted increasing attention due to security concerns. Many detectors cannot achieve accurate results when detecting unseen manipulations despite excellent…

Computer Vision and Pattern Recognition · Computer Science 2022-11-08 Zihan Liu , Hanyi Wang , Shilin Wang

Facial expression recognition (FER) is a key research area in computer vision and human-computer interaction. Despite recent advances in deep learning, challenges persist, especially in generalizing to new scenarios. In fact, zero-shot FER…

Computer Vision and Pattern Recognition · Computer Science 2025-05-01 Modesto Castrillón-Santana , Oliverio J Santana , David Freire-Obregón , Daniel Hernández-Sosa , Javier Lorenzo-Navarro

Large vision-language models (VLMs) have advanced multimodal tasks such as video question answering (QA). However, VLMs face the challenge of selecting frames effectively and efficiently, as standard uniform sampling is expensive and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Martin Q. Ma , Willis Guo , Aditya Agrawal , Ankit Gupta , Paul Pu Liang , Ruslan Salakhutdinov , Louis-Philippe Morency

Video activity recognition by deep neural networks is impressive for many classes. However, it falls short of human performance, especially for challenging to discriminate activities. Humans differentiate these complex activities by…

Computer Vision and Pattern Recognition · Computer Science 2022-01-12 Joseph Chrol-Cannon , Andrew Gilbert , Ranko Lazic , Adithya Madhusoodanan , Frank Guerin

Large Vision-Language Models (LVLMs) demonstrate remarkable performance in short-video tasks such as video question answering, but struggle in long-video understanding. The linear frame sampling strategy, conventionally used by LVLMs, fails…

Computer Vision and Pattern Recognition · Computer Science 2025-06-30 Joao Pereira , Vasco Lopes , David Semedo , Joao Neves

Video summarization techniques have been proven to improve the overall user experience when it comes to accessing and comprehending video content. If the user's preference is known, video summarization can identify significant information…

Computer Vision and Pattern Recognition · Computer Science 2024-11-07 Brian Chen , Xiangyuan Zhao , Yingnan Zhu

Disciplines such as business process management and process mining aid organizations by discovering insights about processes on the basis of recorded event data. However, an obstacle to process analysis is data multi-modality: for instance,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-27 Marco Pegoraro , Jonas Seng , Dustin Heller , Wil M. P. van der Aalst , Kristian Kersting

The emerging large language model role-playing agents (LLM RPAs) aim to simulate individual human behaviors, but the persona fidelity is often undermined by manually-created profiles (e.g., cherry-picked information and personality…

Computation and Language · Computer Science 2025-10-30 Bingsheng Yao , Bo Sun , Yuanzhe Dong , Yuxuan Lu , Dakuo Wang

Human actions in videos are 3D signals. However, there are a few methods available for multiple human action recognition. For long videos, it's difficult to search within a video for a specific action and/or person. For that, this paper…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Noor Almaadeed , Omar Elharrouss , Somaya Al-Maadeed , Ahmed Bouridane , Azeddine Beghdadi

Deep neural network is an effective choice to automatically recognize human actions utilizing data from various wearable sensors. These networks automate the process of feature extraction relying completely on data. However, various noises…

Signal Processing · Electrical Eng. & Systems 2021-01-05 Tanvir Mahmud , A. Q. M. Sazzad Sayyed , Shaikh Anowarul Fattah , Sun-Yuan Kung

Human action recognition is an important application domain in computer vision. Its primary aim is to accurately describe human actions and their interactions from a previously unseen data sequence acquired by sensors. The ability to…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Hieu H. Pham , Louahdi Khoudour , Alain Crouzil , Pablo Zegers , Sergio A. Velastin

Scene flow describes the motion of 3D objects in real world and potentially could be the basis of a good feature for 3D action recognition. However, its use for action recognition, especially in the context of convolutional neural networks…

Computer Vision and Pattern Recognition · Computer Science 2017-03-28 Pichao Wang , Wanqing Li , Zhimin Gao , Yuyao Zhang , Chang Tang , Philip Ogunbona

Vision Language Models (VLMs) have been successful at many chart comprehension tasks that require attending to both the images of charts and their accompanying textual descriptions. However, it is not well established how VLM performance…

Artificial Intelligence · Computer Science 2024-11-04 Grace Guo , Jenna Jiayi Kang , Raj Sanjay Shah , Hanspeter Pfister , Sashank Varma

Human personality decides various aspects of their daily life and working behaviors. Since personality traits are relatively stable over time and unique for each subject, previous approaches frequently infer personality from a single frame…

Computer Vision and Pattern Recognition · Computer Science 2022-09-12 Fang Li

As generative AI continues to evolve, Vision Language Models (VLMs) have emerged as promising tools in various healthcare applications. One area that remains relatively underexplored is their use in human activity recognition (HAR) for…

Computation and Language · Computer Science 2025-11-18 Abderrazek Abid , Thanh-Cong Ho , Fakhri Karray

Long-form video processing fundamentally challenges vision-language models (VLMs) due to the high computational costs of handling extended temporal sequences. Existing token pruning and feature merging methods often sacrifice critical…

Computation and Language · Computer Science 2025-09-11 Chuanqi Cheng , Jian Guan , Wei Wu , Rui Yan

Detecting video moments and highlights from natural-language queries have been unified by transformer-based methods. Other works use generative Multimodal LLM (MLLM) to predict moments and/or highlights as text timestamps, utilizing its…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 I Putu Andika Bagas Jiwanta , Ayu Purwarianti

Video segmentation -- partitioning video frames into multiple segments or objects -- plays a critical role in a broad range of practical applications, from enhancing visual effects in movie, to understanding scenes in autonomous driving, to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-30 Tianfei Zhou , Fatih Porikli , David Crandall , Luc Van Gool , Wenguan Wang

The rapid advancement of Visual Language Models (VLMs) has enabled sophisticated analysis of visual content, leading to concerns about the inference of sensitive user attributes and subsequent privacy risks. While technical capabilities of…

Human-Computer Interaction · Computer Science 2025-08-12 Shuning Zhang , Gengrui Zhang , Yibo Meng , Ziyi Zhang , Hantao Zhao , Xin Yi , Hewu Li

Changes in facial expression, head movement, body movement and gesture movement are remarkable cues in sign language recognition, and most of the current continuous sign language recognition(CSLR) research methods mainly focus on static…

Computer Vision and Pattern Recognition · Computer Science 2024-03-01 Qidan Zhu , Jing Li , Fei Yuan , Quan Gan