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Active learning is a paradigm aimed at reducing the annotation effort by training the model on actively selected informative and/or representative samples. Another paradigm to reduce the annotation effort is self-training that learns from a…

Computer Vision and Pattern Recognition · Computer Science 2021-08-27 Javad Zolfaghari Bengar , Joost van de Weijer , Bartlomiej Twardowski , Bogdan Raducanu

We propose a methodology for estimating human behaviors in psychotherapy sessions using mutli-label and multi-task learning paradigms. We discuss the problem of behavioral coding in which data of human interactions is the annotated with…

Computation and Language · Computer Science 2020-10-07 James Gibson , David C. Atkins , Torrey Creed , Zac Imel , Panayiotis Georgiou , Shrikanth Narayanan

In this work, we introduce LEAD, an approach to discover landmarks from an unannotated collection of category-specific images. Existing works in self-supervised landmark detection are based on learning dense (pixel-level) feature…

Computer Vision and Pattern Recognition · Computer Science 2022-04-07 Tejan Karmali , Abhinav Atrishi , Sai Sree Harsha , Susmit Agrawal , Varun Jampani , R. Venkatesh Babu

Pseudo-labeling is a key component in semi-supervised learning (SSL). It relies on iteratively using the model to generate artificial labels for the unlabeled data to train against. A common property among its various methods is that they…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Islam Nassar , Samitha Herath , Ehsan Abbasnejad , Wray Buntine , Gholamreza Haffari

We address the problem of extracting key steps from unlabeled procedural videos, motivated by the potential of Augmented Reality (AR) headsets to revolutionize job training and performance. We decompose the problem into two steps:…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Anshul Shah , Benjamin Lundell , Harpreet Sawhney , Rama Chellappa

We consider the problem of building high-level, class-specific feature detectors from only unlabeled data. For example, is it possible to learn a face detector using only unlabeled images? To answer this, we train a 9-layered locally…

Machine Learning · Computer Science 2017-04-17 Quoc V. Le , Marc'Aurelio Ranzato , Rajat Monga , Matthieu Devin , Kai Chen , Greg S. Corrado , Jeff Dean , Andrew Y. Ng

In video surveillance applications, person search is a challenging task consisting in detecting people and extracting features from their silhouette for re-identification (re-ID) purpose. We propose a new end-to-end model that jointly…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Angelique Loesch , Jaonary Rabarisoa , Romaric Audigier

Autonomous driving can benefit from motion behavior comprehension when interacting with diverse traffic participants in highly dynamic environments. Recently, there has been a growing interest in estimating class-agnostic motion directly…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Chenxu Luo , Xiaodong Yang , Alan Yuille

Human visual recognition system shows astonishing capability of compressing visual information into a set of tokens containing rich representations without label supervision. One critical driving principle behind it is perceptual grouping.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-26 Zhiwei Deng , Ting Chen , Yang Li

Enabling computational systems with the ability to localize actions in video-based content has manifold applications. Traditionally, such a problem is approached in a fully-supervised setting where video-clips with complete frame-by-frame…

Computer Vision and Pattern Recognition · Computer Science 2019-05-07 Kurt Degiorgio , Fabio Cuzzolin

Zero-shot human skeleton-based action recognition aims to construct a model that can recognize actions outside the categories seen during training. Previous research has focused on aligning sequences' visual and semantic spatial…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Haojun Xu , Yan Gao , Jie Li , Xinbo Gao

The unsupervised pretraining of object detectors has recently become a key component of object detector training, as it leads to improved performance and faster convergence during the supervised fine-tuning stage. Existing unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2024-07-09 Ioannis Maniadis Metaxas , Adrian Bulat , Ioannis Patras , Brais Martinez , Georgios Tzimiropoulos

The existing person search methods use the annotated labels of person identities to train deep networks in a supervised manner that requires a huge amount of time and effort for human labeling. In this paper, we first introduce a novel…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Byeong-Ju Han , Kuhyeun Ko , Jae-Young Sim

Enabling artificial agents to automatically learn complex, versatile and high-performing behaviors is a long-lasting challenge. This paper presents a step in this direction with hierarchical behavioral repertoires that stack several…

Robotics · Computer Science 2018-04-20 Antoine Cully , Yiannis Demiris

Significant attention is being paid to multi-person pose estimation methods recently, as there has been rapid progress in the field owing to convolutional neural networks. Especially, recent method which exploits part confidence maps and…

Computer Vision and Pattern Recognition · Computer Science 2018-11-09 Naoki Kato , Tianqi Li , Kohei Nishino , Yusuke Uchida

Rapid progress in deep reinforcement learning has made it increasingly feasible to train controllers for high-dimensional humanoid bodies. However, methods that use pure reinforcement learning with simple reward functions tend to produce…

Robotics · Computer Science 2017-07-11 Josh Merel , Yuval Tassa , Dhruva TB , Sriram Srinivasan , Jay Lemmon , Ziyu Wang , Greg Wayne , Nicolas Heess

Human activity recognition (HAR) will be an essential function of various emerging applications. However, HAR typically encounters challenges related to modality limitations and label scarcity, leading to an application gap between current…

Machine Learning · Computer Science 2024-04-03 Lilin Xu , Chaojie Gu , Rui Tan , Shibo He , Jiming Chen

Inferring step-wise actions to assemble 3D objects with primitive bricks from images is a challenging task due to complex constraints and the vast number of possible combinations. Recent studies have demonstrated promising results on…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Mengqi Guo , Chen Li , Yuyang Zhao , Gim Hee Lee

The use of supervised learning for Human Activity Recognition (HAR) on mobile devices leads to strong classification performances. Such an approach, however, requires large amounts of labeled data, both for the initial training of the…

Computer Vision and Pattern Recognition · Computer Science 2023-06-27 Riccardo Presotto , Sannara Ek , Gabriele Civitarese , François Portet , Philippe Lalanda , Claudio Bettini

Deep learning methods are successfully used in applications pertaining to ubiquitous computing, health, and well-being. Specifically, the area of human activity recognition (HAR) is primarily transformed by the convolutional and recurrent…

Machine Learning · Computer Science 2019-07-30 Aaqib Saeed , Tanir Ozcelebi , Johan Lukkien