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We introduce the Lecture Video Visual Objects (LVVO) dataset, a new benchmark for visual object detection in educational video content. The dataset consists of 4,000 frames extracted from 245 lecture videos spanning biology, computer…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Dipayan Biswas , Shishir Shah , Jaspal Subhlok

Supervised learning models often make systematic errors on rare subsets of the data. When these subsets correspond to explicit labels in the data (e.g., gender, race) such poor performance can be identified straightforwardly. This paper…

Machine Learning · Computer Science 2021-10-19 Greg d'Eon , Jason d'Eon , James R. Wright , Kevin Leyton-Brown

Facial expression recognition from videos in the wild is a challenging task due to the lack of abundant labelled training data. Large DNN (deep neural network) architectures and ensemble methods have resulted in better performance, but soon…

Computer Vision and Pattern Recognition · Computer Science 2021-02-26 Vikas Kumar , Shivansh Rao , Li Yu

Object detection is a fundamental visual recognition problem in computer vision and has been widely studied in the past decades. Visual object detection aims to find objects of certain target classes with precise localization in a given…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Xiongwei Wu , Doyen Sahoo , Steven C. H. Hoi

Though current CV models have been able to achieve high levels of accuracy on small-scale images classification dataset with hundreds or thousands of categories, many models become infeasible in computational or space consumption when it…

Computer Vision and Pattern Recognition · Computer Science 2024-07-10 Wanhong Huang , Rui Geng

In recent years, indoor human presence detection based on supervised learning (SL) and channel state information (CSI) has attracted much attention. However, existing studies that rely on spatial information of CSI are susceptible to…

Artificial Intelligence · Computer Science 2024-11-26 Li-Hsiang Shen , An-Hung Hsiao , Kai-Jui Chen , Tsung-Ting Tsai , Kai-Ten Feng

Multiple datasets and open challenges for object detection have been introduced in recent years. To build more general and powerful object detection systems, in this paper, we construct a new large-scale benchmark termed BigDetection. Our…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Likun Cai , Zhi Zhang , Yi Zhu , Li Zhang , Mu Li , Xiangyang Xue

While multi-class 3D detectors are needed in many robotics applications, training them with fully labeled datasets can be expensive in labeling cost. An alternative approach is to have targeted single-class labels on disjoint data samples.…

Computer Vision and Pattern Recognition · Computer Science 2022-05-13 Mao Ye , Chenxi Liu , Maoqing Yao , Weiyue Wang , Zhaoqi Leng , Charles R. Qi , Dragomir Anguelov

The application of activity recognition in the ``AI + Education" field is gaining increasing attention. However, current work mainly focuses on the recognition of activities in manually captured videos and a limited number of activity…

The detection of object states in images (State Detection - SD) is a problem of both theoretical and practical importance and it is tightly interwoven with other important computer vision problems, such as action recognition and affordance…

Computer Vision and Pattern Recognition · Computer Science 2022-08-22 Filippos Gouidis , Theodore Patkos , Antonis Argyros , Dimitris Plexousakis

Active learning as a paradigm in deep learning is especially important in applications involving intricate perception tasks such as object detection where labels are difficult and expensive to acquire. Development of active learning methods…

Computer Vision and Pattern Recognition · Computer Science 2022-12-22 Tobias Riedlinger , Marius Schubert , Karsten Kahl , Hanno Gottschalk , Matthias Rottmann

Deep learning methods for computer vision tasks show promise for automating the data analysis of camera trap images. Ecological camera traps are a common approach for monitoring an ecosystem's animal population, as they provide continual…

Computer Vision and Pattern Recognition · Computer Science 2018-03-30 Stefan Schneider , Graham W. Taylor , Stefan C. Kremer

Recent semi-supervised object detection (SSOD) has achieved remarkable progress by leveraging unlabeled data for training. Mainstream SSOD methods rely on Consistency Regularization methods and Exponential Moving Average (EMA), which form a…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Liyu Chen , Huaao Tang , Yi Wen , Hanting Chen , Wei Li , Junchao Liu , Jie Hu

Object detection is the identification of an object in the image along with its localisation and classification. It has wide spread applications and is a critical component for vision based software systems. This paper seeks to perform a…

Computer Vision and Pattern Recognition · Computer Science 2018-08-23 Karanbir Singh Chahal , Kuntal Dey

When it comes to classifying child sexual abuse images, managing similar inter-class correlations and diverse intra-class correlations poses a significant challenge. Vision transformer models, unlike conventional deep convolutional network…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Hanxian He , Campbell Wilson , Thanh Thi Nguyen , Janis Dalins

In this paper, we provide a comprehensive study on a new task called collaborative camouflaged object detection (CoCOD), which aims to simultaneously detect camouflaged objects with the same properties from a group of relevant images. To…

Computer Vision and Pattern Recognition · Computer Science 2023-10-09 Cong Zhang , Hongbo Bi , Tian-Zhu Xiang , Ranwan Wu , Jinghui Tong , Xiufang Wang

This full paper in the research track evaluates the usage of data logged from cybersecurity exercises in order to predict students who are potentially at risk of performing poorly. Hands-on exercises are essential for learning since they…

Affective Behavior Analysis is an important part in human-computer interaction. Existing multi-task affective behavior recognition methods suffer from the problem of incomplete labeled datasets. To tackle this problem, this paper presents a…

Computer Vision and Pattern Recognition · Computer Science 2021-08-16 Lingfeng Wang , Shisen Wang , Jin Qi , Kenji Suzuki

I present the Lower Biased Teacher model, an enhancement of the Unbiased Teacher model, specifically tailored for semi-supervised object detection tasks. The primary innovation of this model is the integration of a localization loss into…

Computer Vision and Pattern Recognition · Computer Science 2024-10-07 Shuang Wang

Whilst contrastive learning has recently brought notable benefits to deep clustering of unlabelled images by learning sample-specific discriminative visual features, its potential for explicitly inferring class decision boundaries is less…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Jiabo Huang , Shaogang Gong