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Despite the success of deep learning in video understanding tasks, processing every frame in a video is computationally expensive and often unnecessary in real-time applications. Frame selection aims to extract the most informative and…

Computer Vision and Pattern Recognition · Computer Science 2023-04-21 Mingjun Zhao , Yakun Yu , Xiaoli Wang , Lei Yang , Di Niu

A number of computer vision tasks exploit a succinct representation of the visual content in the form of sets of local features. Given an input image, feature extraction algorithms identify a set of keypoints and assign to each of them a…

Computer Vision and Pattern Recognition · Computer Science 2016-11-18 Luca Baroffio , Matteo Cesana , Alessandro Redondi , Marco Tagliasacchi

The amount of audio-visual information has increased dramatically with the advent of High Speed Internet. Furthermore, technological advances in recent years in the field of information technology, have simplified the use of video data in…

Multimedia · Computer Science 2019-04-25 Mohamed Hamroun , Mohamed Salim Bouhlel

This paper gives a summary of the content-based Image Retrieval and Content-based Audio Retrieval, which are two parts of the Content-based Retrieval. Content-based Retrieval is the retrieval based on the features of the content. Generally,…

Multimedia · Computer Science 2012-09-11 Yi Wang

Hashing is an efficient method for nearest neighbor search in large-scale data space by embedding high-dimensional feature descriptors into a similarity preserving Hamming space with a low dimension. However, large-scale high-speed…

Computer Vision and Pattern Recognition · Computer Science 2020-06-17 Chenggang Yan , Biao Gong , Yuxuan Wei , Yue Gao

This paper presents a procedure to retrieve subsets of relevant documents from large text collections for Content Analysis, e.g. in social sciences. Document retrieval for this purpose needs to take account of the fact that analysts often…

Information Retrieval · Computer Science 2017-07-12 Gregor Wiedemann , Andreas Niekler

Every hour, huge amounts of visual contents are posted on social media and user-generated content platforms. To find relevant videos by means of a natural language query, text-video retrieval methods have received increased attention over…

Computer Vision and Pattern Recognition · Computer Science 2022-08-04 Alex Falcon , Giuseppe Serra , Oswald Lanz

Intra-operative anticipation of instrument usage is a necessary component for context-aware assistance in surgery, e.g. for instrument preparation or semi-automation of robotic tasks. However, the sparsity of instrument occurrences in long…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Dominik Rivoir , Sebastian Bodenstedt , Isabel Funke , Felix von Bechtolsheim , Marius Distler , Jürgen Weitz , Stefanie Speidel

In this paper, we describe in details VISIONE, a video search system that allows users to search for videos using textual keywords, occurrence of objects and their spatial relationships, occurrence of colors and their spatial relationships,…

Computer Vision and Pattern Recognition · Computer Science 2021-03-19 Giuseppe Amato , Paolo Bolettieri , Fabio Carrara , Franca Debole , Fabrizio Falchi , Claudio Gennaro , Lucia Vadicamo , Claudio Vairo

Analyzing laparoscopic surgery videos presents a complex and multifaceted challenge, with applications including surgical training, intra-operative surgical complication prediction, and post-operative surgical assessment. Identifying…

Computer Vision and Pattern Recognition · Computer Science 2023-12-04 Sahar Nasirihaghighi , Negin Ghamsarian , Heinrich Husslein , Klaus Schoeffmann

In cataract surgery, the operation is performed with the help of a microscope. Since the microscope enables watching real-time surgery by up to two people only, a major part of surgical training is conducted using the recorded videos. To…

Computer Vision and Pattern Recognition · Computer Science 2021-09-28 Negin Ghamsarian , Mario Taschwer , Doris Putzgruber-Adamitsch , Stephanie Sarny , Klaus Schoeffmann

The demand for compact cameras capable of recording high-speed scenes with high resolution is steadily increasing. However, achieving such capabilities often entails high bandwidth requirements, resulting in bulky, heavy systems unsuitable…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Zhihong Zhang , Runzhao Yang , Jinli Suo , Yuxiao Cheng , Qionghai Dai

Videos are prominent learning materials to prepare surgical trainees before they enter the operating room (OR). In this work, we explore techniques to enrich the video-based surgery learning experience. We propose Surgment, a system that…

Human-Computer Interaction · Computer Science 2024-06-27 Jingying Wang , Haoran Tang , Taylor Kantor , Tandis Soltani , Vitaliy Popov , Xu Wang

Dataset distillation has demonstrated remarkable effectiveness in high-compression scenarios for image datasets. While video datasets inherently contain greater redundancy, existing video dataset distillation methods primarily focus on…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Ning Li , Antai Andy Liu , Jingran Zhang , Justin Cui

The rapid expansion of video content across a variety of industries, including social media, education, entertainment, and surveillance, has made video summarization an essential field of study. The current work is a survey that explores…

Computer Vision and Pattern Recognition · Computer Science 2024-10-08 Toqa Alaa , Ahmad Mongy , Assem Bakr , Mariam Diab , Walid Gomaa

Searching is an important tool of information gathering, if information is in the form of picture than it play a major role to take quick action and easy to memorize. This is a human tendency to retain more picture than text. The complexity…

Information Retrieval · Computer Science 2011-12-12 Anamika Sharma

We propose a cross-media lecture-on-demand system, in which users can selectively view specific segments of lecture videos by submitting text queries. Users can easily formulate queries by using the textbook associated with a target…

Computation and Language · Computer Science 2007-05-23 Atsushi Fujii , Katunobu Itou , Tomoyosi Akiba , Tetsuya Ishikawa

Partially Relevant Video Retrieval (PRVR) aims to retrieve untrimmed videos partially relevant to a given query. The core challenge lies in learning robust query-video alignment against spurious semantic correlations arising from inherent…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Long Zhang , Peipei Song , Jianfeng Dong , Kun Li , Xun Yang

Recent advances in video super-resolution have shown that convolutional neural networks combined with motion compensation are able to merge information from multiple low-resolution (LR) frames to generate high-quality images. Current…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Mehdi S. M. Sajjadi , Raviteja Vemulapalli , Matthew Brown

Video large language models (Video-LLMs) face high computational costs due to large volumes of visual tokens. Existing token compression methods typically adopt a two-stage spatiotemporal compression strategy, relying on stage-specific…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Junhao Du , Jialong Xue , Anqi Li , Jincheng Dai , Guo Lu