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Accurate monocular depth estimation is a fundamental component of vision-based perception systems in intelligent transportation applications. Despite recent progress, unsupervised monocular approaches still suffer from significant…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Yufan Zhu , Chongzhi Ran , Mingtao Feng , Le Dong , Weisheng Dong , Antonio M. López

Deep learning based fall detection is one of the crucial tasks for intelligent video surveillance systems, which aims to detect unintentional falls of humans and alarm dangerous situations. In this work, we propose a simple and efficient…

Computer Vision and Pattern Recognition · Computer Science 2022-02-23 Sunhee Hwang , Minsong Ki , Seung-Hyun Lee , Sanghoon Park , Byoung-Ki Jeon

In this paper we propose mmFall - a novel fall detection system, which comprises of (i) the emerging millimeter-wave (mmWave) radar sensor to collect the human body's point cloud along with the body centroid, and (ii) a variational…

Machine Learning · Computer Science 2020-07-29 Feng Jin , Arindam Sengupta , Siyang Cao

Face signatures, including size, shape, texture, skin tone, eye color, appearance, and scars/marks, are widely used as discriminative, biometric information for access control. Despite recent advancements in facial recognition systems,…

Computer Vision and Pattern Recognition · Computer Science 2021-11-05 Jennifer Hamblin , Kshitij Nikhal , Benjamin S. Riggan

Falls among the elderly are a major health concern, frequently resulting in serious injuries and a reduced quality of life. In this paper, we propose "BlockTheFall," a wearable device-based fall detection framework which detects falls in…

Computers and Society · Computer Science 2023-06-14 Bilash Saha , Md Saiful Islam , Abm Kamrul Riad , Sharaban Tahora , Hossain Shahriar , Sweta Sneha

Growing interests in RGB-D salient object detection (RGB-D SOD) have been witnessed in recent years, owing partly to the popularity of depth sensors and the rapid progress of deep learning techniques. Unfortunately, existing RGB-D SOD…

Computer Vision and Pattern Recognition · Computer Science 2022-05-17 Wei Ji , Jingjing Li , Qi Bi , Chuan Guo , Jie Liu , Li Cheng

Object detection is an essential task for autonomous robots operating in dynamic and changing environments. A robot should be able to detect objects in the presence of sensor noise that can be induced by changing lighting conditions for…

Robotics · Computer Science 2019-11-20 Oier Mees , Andreas Eitel , Wolfram Burgard

Privacy-preserving training on sensitive data commonly relies on differentially private stochastic optimization with gradient clipping and Gaussian noise. The clipping threshold is a critical control knob: if set too small, systematic…

Machine Learning · Computer Science 2026-02-12 Mohammad Partohaghighi , Roummel Marcia , Bruce J. West , YangQuan Chen

Fall detection for elderly care using non-invasive vision-based systems remains an important yet unsolved problem. Driven by strict privacy requirements, inference must run at the edge of the vision sensor, demanding robust, real-time, and…

Falls in wet bathroom environments are a major safety risk for seniors living alone. Recent work has shown that mmWave-only, vibration-only, and existing multimodal schemes, such as vibration-triggered radar activation, early feature…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Haitian Wang , Yiren Wang , Xinyu Wang , Sheldon Fung , Atif Mansoor

RGB-Infrared (IR) person re-identification aims to retrieve person-of-interest from heterogeneous cameras, easily suffering from large image modality discrepancy caused by different sensing wavelength ranges. Existing work usually minimizes…

Computer Vision and Pattern Recognition · Computer Science 2021-07-27 Lin Wan , Zongyuan Sun , Qianyan Jing , Yehansen Chen , Lijing Lu , Zhihang Li

Semantic segmentation of crops and weeds is crucial for site-specific farm management; however, most existing methods depend on labor intensive pixel-level annotations. A further challenge arises when models trained on one field (source…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Numair Nadeem , Muhammad Hamza Asad , Saeed Anwar , Abdul Bais

In recent years, object detection has shown impressive results using supervised deep learning, but it remains challenging in a cross-domain environment. The variations of illumination, style, scale, and appearance in different domains can…

Computer Vision and Pattern Recognition · Computer Science 2019-08-12 Rongchang Xie , Fei Yu , Jiachao Wang , Yizhou Wang , Li Zhang

Video privacy leakage is becoming an increasingly severe public problem, especially in cloud-based video surveillance systems. It leads to the new need for secure cloud-based video applications, where the video is encrypted for privacy…

Image and Video Processing · Electrical Eng. & Systems 2021-08-31 Xianhao Tian , Peijia Zheng , Jiwu Huang

The widespread deployment of high-resolution visual sensing systems, coupled with the rise of foundation models, has amplified privacy risks in video-based applications. Differentially private pixelization offers mathematically guaranteed…

Cryptography and Security · Computer Science 2025-11-07 Ming Liu

Personalized fall detection models can significantly improve accuracy by adapting to individual motion patterns, yet their effectiveness is often limited by the scarcity of real-world fall data and the dominance of non-fall feedback…

Machine Learning · Computer Science 2026-03-19 Awatif Yasmin , Tarek Mahmud , Sana Alamgeer , Anne H. H. Ngu

Unsupervised domain adaptive object detection (UDAOD) from the visible domain to the infrared (RGB-IR) domain is challenging. Existing methods regard the RGB domain as a unified domain and neglect the multiple subdomains within it, such as…

Computer Vision and Pattern Recognition · Computer Science 2025-07-17 Xiwei Zhang , Chunjin Yang , Yiming Xiao , Runtong Zhang , Fanman Meng

This paper presents an innovative approach to address the pressing concern of fall incidents among the elderly by developing an accurate fall detection system. Our proposed system combines state-of-the-art technologies, including…

Signal Processing · Electrical Eng. & Systems 2023-09-15 Rishabh Mondal , Prasun Ghosal

Integrating an RGB camera into a ToF imaging system has become a significant technique for perceiving the real world. The RGB guided ToF imaging system is crucial to several applications, including face anti-spoofing, saliency detection,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-20 Xin Qiao , Matteo Poggi , Pengchao Deng , Hao Wei , Chenyang Ge , Stefano Mattoccia

Timely and reliable detection of falls is a large and rapidly growing field of research due to the medical and financial demand of caring for a constantly growing elderly population. Within the past 2 decades, the availability of…

Human-Computer Interaction · Computer Science 2023-01-11 Harry Wixley