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Action recognition is computationally expensive. In this paper, we address the problem of frame selection to improve the accuracy of action recognition. In particular, we show that selecting good frames helps in action recognition…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Shreyank N Gowda , Marcus Rohrbach , Laura Sevilla-Lara

Large multimodal models (LMMs) have recently demonstrated remarkable performance in video question answering (VideoQA), yet reasoning over video remains challenging due to high inference cost and diluted information. Keyframe selection…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Minchan Kwon , Hyounguk Shon , Junmo Kim

Fully finetuning foundation language models (LMs) with billions of parameters is often impractical due to high computational costs, memory requirements, and the risk of overfitting. Although methods like low-rank adapters help address these…

Machine Learning · Computer Science 2026-02-11 Jonathan Svirsky , Yehonathan Refael , Ofir Lindenbaum

This paper introduces a framework for super-resolution of scalable video based on compressive sensing and sparse representation of residual frames in reconnaissance and surveillance applications. We exploit efficient compressive sampling…

Computer Vision and Pattern Recognition · Computer Science 2017-08-01 Mohammad Hossein Moghaddam , Mohammad Javad Azizipour , Saeed Vahidian , Besma Smida

Video Question Answering is a challenging task, which requires the model to reason over multiple frames and understand the interaction between different objects to answer questions based on the context provided within the video, especially…

Artificial Intelligence · Computer Science 2024-07-31 Bhanu Prakash Reddy Guda , Tanmay Kulkarni , Adithya Sampath , Swarnashree Mysore Sathyendra

Video summarization remains a huge challenge in computer vision due to the size of the input videos to be summarized. We propose an efficient, language-only video summarizer that achieves competitive accuracy with high data efficiency.…

Artificial Intelligence · Computer Science 2023-09-19 Yoonsoo Nam , Adam Lehavi , Daniel Yang , Digbalay Bose , Swabha Swayamdipta , Shrikanth Narayanan

Conventional Transformer-based Video Question Answering (VideoQA) approaches generally encode frames independently through one or more image encoders followed by interaction between frames and question. However, such schema would incur…

Computer Vision and Pattern Recognition · Computer Science 2023-05-17 Chenyang Lyu , Tianbo Ji , Yvette Graham , Jennifer Foster

Training an effective video-and-language model intuitively requires multiple frames as model inputs. However, it is unclear whether using multiple frames is beneficial to downstream tasks, and if yes, whether the performance gain is worth…

Computer Vision and Pattern Recognition · Computer Science 2022-06-08 Jie Lei , Tamara L. Berg , Mohit Bansal

The proliferation of video content on platforms like YouTube and Vimeo presents significant challenges in efficiently locating relevant information. Automatic video summarization aims to address this by extracting and presenting key content…

Computer Vision and Pattern Recognition · Computer Science 2024-08-28 Jia-Hong Huang

Humans share a strong tendency to memorize/forget some of the visual information they encounter. This paper focuses on providing computational models for the prediction of the intrinsic memorability of visual content. To address this new…

Computer Vision and Pattern Recognition · Computer Science 2024-02-28 Romain Cohendet , Claire-Hélène Demarty , Ngoc Q. K. Duong , Martin Engilberge

Multimodal large language models have recently achieved remarkable progress in video question answering (VideoQA) by jointly processing visual, textual, and audio information. However, it remains unclear which video representations are most…

Information Retrieval · Computer Science 2025-10-15 Zhi Li , Yanan Wang , Hao Niu , Julio Vizcarra , Masato Taya

Training an effective video action recognition model poses significant computational challenges, particularly under limited resource budgets. Current methods primarily aim to either reduce model size or utilize pre-trained models, limiting…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Harry Cheng , Yangyang Guo , Liqiang Nie , Zhiyong Cheng , Mohan Kankanhalli

Video question answering is a challenging task that requires understanding jointly the language input, the visual information in individual video frames, as well as the temporal information about the events occurring in the video. In this…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 AJ Piergiovanni , Kairo Morton , Weicheng Kuo , Michael S. Ryoo , Anelia Angelova

Processing long-form videos with Video Large Language Models (Video-LLMs) is computationally prohibitive. Current efficiency methods often compromise fine-grained perception through irreversible information disposal or inhibit long-range…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Handong Li , Zikang Liu , Longteng Guo , Tongtian Yue , Yepeng Tang , Xinxin Zhu , Chuanyang Zheng , Ziming Wang , Zhibin Wang , Jun Song , Cheng Yu , Bo Zheng , Jing Liu

The assignment of importance scores to particular frames or (short) segments in a video is crucial for summarization, but also a difficult task. Previous work utilizes only one source of visual features. In this paper, we suggest a novel…

Computer Vision and Pattern Recognition · Computer Science 2021-05-14 Junaid Ahmed Ghauri , Sherzod Hakimov , Ralph Ewerth

Physical computing infrastructure, data gathering, and algorithms have recently had significant advances to extract information from images and videos. The growth has been especially outstanding in image captioning and video captioning.…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Soheyla Amirian , Thiab R. Taha , Khaled Rasheed , Hamid R. Arabnia

Large vision--language models (VLMs) are increasingly applied to long-video question answering, yet inference is often bottlenecked by the number of input frames and resulting visual tokens. Naive sparse sampling can miss decisive moments,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Yuning Huang , Xiaoyu Ji , Joseph Huang , Yichi Zhang , Fengqing Zhu

Recently, SimCSE has shown the feasibility of contrastive learning in training sentence embeddings and illustrates its expressiveness in spanning an aligned and uniform embedding space. However, prior studies have shown that dense models…

Computation and Language · Computer Science 2023-11-08 Ruize An , Chen Zhang , Dawei Song

Thanks to the advances in the technology of low-cost digital cameras and the popularity of the self-recording culture, the amount of visual data on the Internet is going to the opposite side of the available time and patience of the users.…

Action recognition in videos has attracted a lot of attention in the past decade. In order to learn robust models, previous methods usually assume videos are trimmed as short sequences and require ground-truth annotations of each video…

Computer Vision and Pattern Recognition · Computer Science 2019-02-21 Xiao-Yu Zhang , Haichao Shi , Changsheng Li , Kai Zheng , Xiaobin Zhu , Lixin Duan