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This paper proposes a new optical camouflage system that uses RGB-D cameras, for acquiring point cloud of background scene, and tracking observers eyes. This system enables a user to conceal an object located behind a display that…

Computer Vision and Pattern Recognition · Computer Science 2017-09-26 Ahmed M. Siddek , Mohsen A. Rashwan , Islam A. Eshrah

Nowadays smartphones come embedded with multiple motion sensors, such as an accelerometer, a gyroscope and an orientation sensor. With these sensors, apps can gather more information and therefore provide end users with more functionality.…

Cryptography and Security · Computer Science 2014-10-29 Yihang Song , Madhur Kukreti , Rahul Rawat , Urs Hengartner

Using our voices to access, and interact with, online services raises concerns about the trade-offs between convenience, privacy, and security. The conflict between maintaining privacy and ensuring input authenticity has often been hindered…

Computers and Society · Computer Science 2023-02-28 Ranya Aloufi , Hamed Haddadi , David Boyle

Object recognition technologies hold the potential to support blind and low-vision people in navigating the world around them. However, the gap between benchmark performances and practical usability remains a significant challenge. This…

Human-Computer Interaction · Computer Science 2024-08-07 Jonggi Hong , Hernisa Kacorri

Maintaining social distancing norms between humans has become an indispensable precaution to slow down the transmission of COVID-19. We present a novel method to automatically detect pairs of humans in a crowded scenario who are not…

Robotics · Computer Science 2020-08-25 Adarsh Jagan Sathyamoorthy , Utsav Patel , Yash Ajay Savle , Moumita Paul , Dinesh Manocha

Our work is motivated by environmental monitoring tasks, where finding the global maxima (i.e., hotspot) of a spatially varying field is crucial. We investigate the problem of identifying the hotspot for fields that can be sensed using an…

Robotics · Computer Science 2021-03-24 Yoonchang Sung , Deeksha Dixit , Pratap Tokekar

The growing market for smart home IoT devices promises new conveniences for consumers while presenting novel challenges for preserving privacy within the home. Specifically, Internet service providers or neighborhood WiFi eavesdroppers can…

Cryptography and Security · Computer Science 2017-05-22 Noah Apthorpe , Dillon Reisman , Nick Feamster

Large indoor spaces have complex layouts making them difficult to navigate. Indoor spaces in hospitals, universities, shopping complexes, etc., carry multi-modal information in the form of text and symbols. Hence, it is difficult for Blind…

Robotics · Computer Science 2024-10-17 Dharmateja Adapa , Virendra Singh Shekhawat , Avinash Gautam , Sudeept Mohan

Image-based localization is a core component of many augmented/mixed reality (AR/MR) and autonomous robotic systems. Current localization systems rely on the persistent storage of 3D point clouds of the scene to enable camera pose…

Computer Vision and Pattern Recognition · Computer Science 2019-03-14 Pablo Speciale , Johannes L. Schönberger , Sing Bing Kang , Sudipta N. Sinha , Marc Pollefeys

In today's world the art of sending & displaying the hidden information especially in public places, has received more attention and faced many challenges. Therefore, different methods have been proposed so far for hiding information in…

Cryptography and Security · Computer Science 2009-12-14 Shashikala Channalli , Ajay Jadhav

Curbs -- the edge of a raised sidewalk at the point where it meets a street -- crucial in urban environments where they help delineate safe pedestrian zones, from dangerous vehicular lanes. However, curbs themselves are significant…

Human-Computer Interaction · Computer Science 2025-03-03 Ligao Ruan , Giles Hamilton-Fletcher , Mahya Beheshti , Todd E Hudson , Maurizio Porfiri , JR Rizzo

In recent years, the widespread of mobile devices equipped with GPS and communication chips has led to the growing use of location-based services (LBS) in which a user receives a service based on his current location. The disclosure of…

Cryptography and Security · Computer Science 2020-02-25 Alireza Partovi , Wei Zheng , Taeho Jung , Hai Lin

This paper addresses the daily challenges encountered by visually impaired individuals, such as limited access to information, navigation difficulties, and barriers to social interaction. To alleviate these challenges, we introduce a novel…

Computer Vision and Pattern Recognition · Computer Science 2024-05-31 Inpyo Song , Minjun Joo , Joonhyung Kwon , Jangwon Lee

Securely exchanging contact information is essential for establishing trustworthy communication channels that facilitate effective online collaboration. However, current methods are neither user-friendly nor scalable for large groups of…

Cryptography and Security · Computer Science 2024-11-22 Florentin Putz , Steffen Haesler , Thomas Völkl , Maximilian Gehring , Nils Rollshausen , Matthias Hollick

Despite our growing reliance on mobile phones for a wide range of daily tasks, their operation remains largely opaque. A number of previous studies have addressed elements of this problem in a partial fashion, trading off analytic…

Networking and Internet Architecture · Computer Science 2016-11-01 Abbas Razaghpanah , Narseo Vallina-Rodriguez , Srikanth Sundaresan , Christian Kreibich , Phillipa Gill , Mark Allman , Vern Paxson

Attendance Management System (AMS) can be made into smarter way by using face recognition technique, where we use a CCTV camera to be fixed at the entry point of a classroom, which automatically captures the image of the person and checks…

Computers and Society · Computer Science 2014-01-24 MuthuKalyani. K , VeeraMuthu. A

Trilateration is one of the well-known threat models to the user's location privacy in location-based apps, especially those contain highly sensitive information such as dating apps. The threat model mainly bases on the publicly shown…

Computers and Society · Computer Science 2016-04-29 Nguyen Phong Hoang , Yasuhito Asano , Masatoshi Yoshikawa

In pervasive computing environments, Location- Based Services (LBSs) are becoming increasingly important due to continuous advances in mobile networks and positioning technologies. Nevertheless, the wide deployment of LBSs can jeopardize…

Cryptography and Security · Computer Science 2016-11-17 Lin Yao , Chi Lin , Xiangwei Kong , Feng Xia , Guowei Wu

Many critical applications rely on cameras to capture video footage for analytical purposes. This has led to concerns about these cameras accidentally capturing more information than is necessary. In this paper, we propose a deep learning…

Computer Vision and Pattern Recognition · Computer Science 2021-10-06 Gautham Ramajayam , Tao Sun , Chiu C. Tan , Lannan Luo , Haibin Ling

Augmented Reality (AR) headsets continuously sense their surroundings, capturing nearby bystanders and raising privacy risks. Visual bystander privacy-enhancing technologies (PETs) mitigate this risk by detecting bystanders in egocentric…

Cryptography and Security · Computer Science 2026-05-29 Syed Ibrahim Mustafa Shah Bukhari , Matthew Corbett , Bo Ji , Brendan David-John