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Universal lesion detection has great value for clinical practice as it aims to detect various types of lesions in multiple organs on medical images. Deep learning methods have shown promising results, but demanding large volumes of…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Xiaoyu Bai , Benteng Ma , Changyang Li , Yong Xia

With the advantage of high mobility, Unmanned Aerial Vehicles (UAVs) are used to fuel numerous important applications in computer vision, delivering more efficiency and convenience than surveillance cameras with fixed camera angle, scale…

Computer Vision and Pattern Recognition · Computer Science 2018-04-03 Dawei Du , Yuankai Qi , Hongyang Yu , Yifan Yang , Kaiwen Duan , Guorong Li , Weigang Zhang , Qingming Huang , Qi Tian

Unsupervised (US) video anomaly detection (VAD) in surveillance applications is gaining more popularity recently due to its practical real-world applications. As surveillance videos are privacy sensitive and the availability of large-scale…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Anas Al-lahham , Muhammad Zaigham Zaheer , Nurbek Tastan , Karthik Nandakumar

Weakly Supervised Video Anomaly Detection (WSVAD) has achieved notable advancements, yet existing models remain vulnerable to adversarial attacks, limiting their reliability. Due to the inherent constraints of weak supervision, where only…

Classification and segmentation are crucial in medical image analysis as they enable accurate diagnosis and disease monitoring. However, current methods often prioritize the mutual learning features and shared model parameters, while…

Computer Vision and Pattern Recognition · Computer Science 2023-08-03 Kai Ren , Ke Zou , Xianjie Liu , Yidi Chen , Xuedong Yuan , Xiaojing Shen , Meng Wang , Huazhu Fu

Detection of anomalous events in videos is an important problem in applications such as surveillance. Video anomaly detection (VAD) is well-studied in the one-class classification (OCC) and weakly supervised (WS) settings. However, fully…

Computer Vision and Pattern Recognition · Computer Science 2023-10-27 Anas Al-lahham , Nurbek Tastan , Zaigham Zaheer , Karthik Nandakumar

Automated pavement distresses detection using road images remains a challenging topic in the computer vision research community. Recent developments in deep learning has led to considerable research activity directed towards improving the…

Computer Vision and Pattern Recognition · Computer Science 2020-04-29 Hamed Majidifard , Peng Jin , Yaw Adu-Gyamfi , William G. Buttlar

Traversability estimation in rugged, unstructured environments remains a challenging problem in field robotics. Often, the need for precise, accurate traversability estimation is in direct opposition to the limited sensing and compute…

Robotics · Computer Science 2024-07-12 Samuel Triest , David D. Fan , Sebastian Scherer , Ali-Akbar Agha-Mohammadi

Dealing with atypical traffic scenarios remains a challenging task in autonomous driving. However, most anomaly detection approaches cannot be trained on raw sensor data but require exposure to outlier data and powerful semantic…

Computer Vision and Pattern Recognition · Computer Science 2024-10-02 Daniel Bogdoll , Noël Ollick , Tim Joseph , Svetlana Pavlitska , J. Marius Zöllner

Video anomaly detection (VAD) with weak supervision has achieved remarkable performance in utilizing video-level labels to discriminate whether a video frame is normal or abnormal. However, current approaches are inherently limited to a…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Peng Wu , Xuerong Zhou , Guansong Pang , Yujia Sun , Jing Liu , Peng Wang , Yanning Zhang

Video anomaly detection (VAD) has been paid increasing attention due to its potential applications, its current dominant tasks focus on online detecting anomalies% at the frame level, which can be roughly interpreted as the binary or…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Peng Wu , Jing Liu , Xiangteng He , Yuxin Peng , Peng Wang , Yanning Zhang

The evolving algorithms for 2D facial landmark detection empower people to recognize faces, analyze facial expressions, etc. However, existing methods still encounter problems of unstable facial landmarks when applied to videos. Because…

Computer Vision and Pattern Recognition · Computer Science 2020-07-31 Xiaoyu Xiang , Yang Cheng , Shaoyuan Xu , Qian Lin , Jan Allebach

Movie highlights stand out of the screenplay for efficient browsing and play a crucial role on social media platforms. Based on existing efforts, this work has two observations: (1) For different annotators, labeling highlight has…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Bei Gan , Xiujun Shu , Ruizhi Qiao , Haoqian Wu , Keyu Chen , Hanjun Li , Bo Ren

Label noise is a critical factor that degrades the generalization performance of deep neural networks, thus leading to severe issues in real-world problems. Existing studies have employed strategies based on either loss or uncertainty to…

Machine Learning · Computer Science 2020-08-17 Wonyoung Shin , Jung-Woo Ha , Shengzhe Li , Yongwoo Cho , Hoyean Song , Sunyoung Kwon

We propose a novel deep-learning framework for super-resolution ultrasound images and videos in terms of spatial resolution and line reconstruction. We up-sample the acquired low-resolution image through a vision-based interpolation method;…

Computer Vision and Pattern Recognition · Computer Science 2023-05-03 Simone Cammarasana , Paolo Nicolardi , Giuseppe Patanè

We present a meta-learning framework for weakly supervised anomaly detection in videos, where the detector learns to adapt to unseen types of abnormal activities effectively when only video-level annotations of binary labels are available.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-28 Jaeyoo Park , Junha Kim , Bohyung Han

Weakly-supervised temporal action localization aims to learn detecting temporal intervals of action classes with only video-level labels. To this end, it is crucial to separate frames of action classes from the background frames (i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2020-12-18 Pilhyeon Lee , Jinglu Wang , Yan Lu , Hyeran Byun

As unmanned aerial vehicles (UAVs) become more accessible with a growing range of applications, the potential risk of UAV disruption increases. Recent development in deep learning allows vision-based counter-UAV systems to detect and track…

Computer Vision and Pattern Recognition · Computer Science 2021-12-03 Daniel Organisciak , Matthew Poyser , Aishah Alsehaim , Shanfeng Hu , Brian K. S. Isaac-Medina , Toby P. Breckon , Hubert P. H. Shum

Anomaly detection or more generally outliers detection is one of the most popular and challenging subject in theoretical and applied machine learning. The main challenge is that in general we have access to very few labeled data or no…

Machine Learning · Computer Science 2023-05-31 Mansour Zoubeirou A Mayaki , Michel Riveill

Convolutional neural networks (CNNs) based approaches for semantic alignment and object landmark detection have improved their performance significantly. Current efforts for the two tasks focus on addressing the lack of massive training…

Computer Vision and Pattern Recognition · Computer Science 2019-10-03 Sangryul Jeon , Dongbo Min , Seungryong Kim , Kwanghoon Sohn