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Detecting meaningful events in an untrimmed video is essential for dense video captioning. In this work, we propose a novel and simple model for event sequence generation and explore temporal relationships of the event sequence in the…

Computer Vision and Pattern Recognition · Computer Science 2020-06-16 Yuqing Song , Shizhe Chen , Yida Zhao , Qin Jin

Since acquiring pixel-wise annotations for training convolutional neural networks for semantic image segmentation is time-consuming, weakly supervised approaches that only require class tags have been proposed. In this work, we propose…

Computer Vision and Pattern Recognition · Computer Science 2019-05-17 Johann Sawatzky , Debayan Banerjee , Juergen Gall

The Audio-Visual Video Parsing task aims to identify and temporally localize the events that occur in either or both the audio and visual streams of audible videos. It often performs in a weakly-supervised manner, where only video event…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Jinxing Zhou , Dan Guo , Yiran Zhong , Meng Wang

The objective of this paper is self-supervised learning of spatio-temporal embeddings from video, suitable for human action recognition. We make three contributions: First, we introduce the Dense Predictive Coding (DPC) framework for…

Computer Vision and Pattern Recognition · Computer Science 2019-09-30 Tengda Han , Weidi Xie , Andrew Zisserman

Dense video captioning involves detecting and describing events within video sequences. Traditional methods operate in an offline setting, assuming the entire video is available for analysis. In contrast, in this work we introduce a…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Eduardo Blanco-Fernández , Carlos Gutiérrez-Álvarez , Nadia Nasri , Saturnino Maldonado-Bascón , Roberto J. López-Sastre

Extracting dense representations for terms and phrases is a task of great importance for knowledge discovery platforms targeting highly-technical fields. Dense representations are used as features for downstream components and have multiple…

Computation and Language · Computer Science 2023-05-26 Francesco Fusco , Diego Antognini

Self-supervised learning has become increasingly important to leverage the abundance of unlabeled data available on platforms like YouTube. Whereas most existing approaches learn low-level representations, we propose a joint…

Computer Vision and Pattern Recognition · Computer Science 2019-09-13 Chen Sun , Austin Myers , Carl Vondrick , Kevin Murphy , Cordelia Schmid

One of the prevalent learning tasks involving images is content-based image classification. This is a difficult task especially because the low-level features used to digitally describe images usually capture little information about the…

Computer Vision and Pattern Recognition · Computer Science 2015-12-16 Marian-Andrei Rizoiu , Julien Velcin , Stéphane Lallich

Automatically generating a natural language sentence to describe the content of an input video is a very challenging problem. It is an essential multimodal task in which auditory and visual contents are equally important. Although audio…

Computer Vision and Pattern Recognition · Computer Science 2018-12-10 Yapeng Tian , Chenxiao Guan , Justin Goodman , Marc Moore , Chenliang Xu

Contextual reasoning is essential to understand events in long untrimmed videos. In this work, we systematically explore different captioning models with various contexts for the dense-captioning events in video task, which aims to generate…

Computer Vision and Pattern Recognition · Computer Science 2019-07-12 Shizhe Chen , Yuqing Song , Yida Zhao , Qin Jin , Zhaoyang Zeng , Bei Liu , Jianlong Fu , Alexander Hauptmann

Current approaches to learning semantic representations of sentences often use prior word-level knowledge. The current study aims to leverage visual information in order to capture sentence level semantics without the need for word…

Computation and Language · Computer Science 2019-09-25 Danny Merkx , Stefan Frank

Visual imagery does not consist of solitary objects, but instead reflects the composition of a multitude of fluid concepts. While there have been great advances in visual representation learning, such advances have focused on building…

Computer Vision and Pattern Recognition · Computer Science 2025-04-07 Austin Stone , Hagen Soltau , Robert Geirhos , Xi Yi , Ye Xia , Bingyi Cao , Kaifeng Chen , Abhijit Ogale , Jonathon Shlens

The immense success of deep learning based methods in computer vision heavily relies on large scale training datasets. These richly annotated datasets help the network learn discriminative visual features. Collecting and annotating such…

Computer Vision and Pattern Recognition · Computer Science 2018-07-09 Yash Patel , Lluis Gomez , Raul Gomez , Marçal Rusiñol , Dimosthenis Karatzas , C. V. Jawahar

This note describes the details of our solution to the dense-captioning events in videos task of ActivityNet Challenge 2018. Specifically, we solve this problem with a two-stage way, i.e., first temporal event proposal and then sentence…

Computer Vision and Pattern Recognition · Computer Science 2018-06-26 Yuan Liu , Moyini Yao

Event camera, a novel neuromorphic vision sensor, records data with high temporal resolution and wide dynamic range, offering new possibilities for accurate visual representation in challenging scenarios. However, event data is inherently…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Lin Zhu , Ruonan Liu , Xiao Wang , Lizhi Wang , Hua Huang

Human communication typically has an underlying structure. This is reflected in the fact that in many user generated videos, a starting point, ending, and certain objective steps between these two can be identified. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2016-01-28 Ozan Sener , Amir Zamir , Silvio Savarese , Ashutosh Saxena

Unsupervised video hashing usually optimizes binary codes by learning to reconstruct input videos. Such reconstruction constraint spends much effort on frame-level temporal context changes without focusing on video-level global semantics…

Computer Vision and Pattern Recognition · Computer Science 2023-10-13 Pandeng Li , Hongtao Xie , Jiannan Ge , Lei Zhang , Shaobo Min , Yongdong Zhang

This technical report presents a brief description of our submission to the dense video captioning task of ActivityNet Challenge 2020. Our approach follows a two-stage pipeline: first, we extract a set of temporal event proposals; then we…

Computer Vision and Pattern Recognition · Computer Science 2020-08-13 Teng Wang , Huicheng Zheng , Mingjing Yu

Visual concept discovery has long been deemed important to improve interpretability of neural networks, because a bank of semantically meaningful concepts would provide us with a starting point for building machine learning models that…

Computer Vision and Pattern Recognition · Computer Science 2022-04-26 Haiyang Huang , Zhi Chen , Cynthia Rudin

Traditionally, training neural networks to perform semantic segmentation required expensive human-made annotations. But more recently, advances in the field of unsupervised learning have made significant progress on this issue and towards…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Leon Sick , Dominik Engel , Pedro Hermosilla , Timo Ropinski