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In this paper, a new video classification methodology is proposed which can be applied in both first and third person videos. The main idea behind the proposed strategy is to capture complementary information of appearance and motion…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Ali Javidani , Ahmad Mahmoudi-Aznaveh

We introduce Pixie, a novel, camera based two factor authentication solution for mobile and wearable devices. A quick and familiar user action of snapping a photo is sufficient for Pixie to simultaneously perform a graphical password…

Cryptography and Security · Computer Science 2017-10-24 Mozhgan Azimpourkivi , Umut Topkara , Bogdan Carbunar

Recent advances in large pretrained text-to-image models have shown unprecedented capabilities for high-quality human-centric generation, however, customizing face identity is still an intractable problem. Existing methods cannot ensure…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 Qinghe Wang , Xu Jia , Xiaomin Li , Taiqing Li , Liqian Ma , Yunzhi Zhuge , Huchuan Lu

Recent advancements in computer vision have led to a renewed interest in developing assistive technologies for individuals with visual impairments. Although extensive research has been conducted in the field of computer vision-based…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Inpyo Song , Sanghyeon Lee , Minjun Joo , Jangwon Lee

This paper studies a novel privacy-preserving anonymization problem for pedestrian images, which preserves personal identity information (PII) for authorized models and prevents PII from being recognized by third parties. Conventional…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Junwu Zhang , Mang Ye , Yao Yang

Image captioning bridges the gap between vision and language by automatically generating natural language descriptions for images. Traditional image captioning methods often overlook the preferences and characteristics of users.…

Computer Vision and Pattern Recognition · Computer Science 2024-12-23 Xuan Wang , Guanhong Wang , Wenhao Chai , Jiayu Zhou , Gaoang Wang

Nowadays, mobile smart devices are widely used in daily life. It is increasingly important to prevent malicious users from accessing private data, thus a secure and convenient authentication method is urgently needed. Compared with common…

Cryptography and Security · Computer Science 2025-04-02 Yadong Xie , Fan Li , Yu Wang

Wearable cameras are becoming more and more popular in several applications, increasing the interest of the research community in developing approaches for recognizing actions from the first-person point of view. An open challenge in…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Mirco Planamente , Andrea Bottino , Barbara Caputo

The design of authentication protocols, for online banking services in particular and any service that is of sensitive nature in general, is quite challenging. Indeed, enforcing security guarantees has overhead thus imposing additional…

Cryptography and Security · Computer Science 2011-12-13 DaeHun Nyang , Abedelaziz Mohaisen , Taekyoung Kwon , Brent Kang , Angelos Stavrou

Lensless cameras replace traditional optics with thin masks, leading to highly multiplexed measurements akin to encryption. However, static masks in conventional designs leave systems vulnerable to simple attacks. This work explores the use…

Image and Video Processing · Electrical Eng. & Systems 2025-07-15 Eric Bezzam , Martin Vetterli

Face recognition presents a challenging problem in the field of image analysis and computer vision. The security of information is becoming very significant and difficult. Security cameras are presently common in airports, Offices,…

Computer Vision and Pattern Recognition · Computer Science 2014-03-04 Divyarajsinh N. Parmar , Brijesh B. Mehta

A highly secure, foolproof, user authentication system is still a primary focus of research in the field of User Privacy and Security. Shoulder-surfing is an act of spying when an authorized user is logging into a system, and is promoted by…

Human-Computer Interaction · Computer Science 2018-03-22 Vijay Rajanna , Tracy Hammond

Personalized fashion recommendation is a difficult task because 1) the decisions are highly correlated with users' aesthetic appetite, which previous work frequently overlooks, and 2) many new items are constantly rolling out that cause…

Information Retrieval · Computer Science 2025-01-07 Chongxian Chen , Fan Mo , Xin Fan , Hayato Yamana

We present the first purely event-based method for face detection using the high temporal resolution of an event-based camera. We will rely on a new feature that has never been used for such a task that relies on detecting eye blinks. Eye…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Gregor Lenz , Sio-Hoi Ieng , Ryad Benosman

Photorealistic talking-head avatars are becoming increasingly common in virtual meetings, gaming, and social platforms. These avatars allow for more immersive communication, but they also introduce serious security risks. One emerging…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Laura Pedrouzo-Rodriguez , Pedro Delgado-DeRobles , Luis F. Gomez , Ruben Tolosana , Ruben Vera-Rodriguez , Aythami Morales , Julian Fierrez

Different users find different images generated for the same prompt desirable. This gives rise to personalized image generation which involves creating images aligned with an individual's visual preference. Current generative models are,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Sogand Salehi , Mahdi Shafiei , Teresa Yeo , Roman Bachmann , Amir Zamir

This study proposes a few-shot personalized saliency prediction method that leverages interpersonal gaze patterns. Unlike general saliency maps, personalized saliency maps (PSMs) capture individual visual attention and provide insights into…

Image and Video Processing · Electrical Eng. & Systems 2025-09-30 Yuya Moroto , Keisuke Maeda , Takahiro Ogawa , Miki Haseyama

Classical techniques for protecting facial image privacy typically fall into two categories: data-poisoning methods, exemplified by Fawkes, which introduce subtle perturbations to images, or anonymization methods that generate images…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Mariia Zameshina , Marlene Careil , Olivier Teytaud , Laurent Najman

Current automatic vision systems face two major challenges: scalability and extreme variability of appearance. First, the computational time required to process an image typically scales linearly with the number of pixels in the image,…

Computer Vision and Pattern Recognition · Computer Science 2014-05-22 Marc'Aurelio Ranzato

AI-based face recognition, i.e., the re-identification of individuals within images, is an already well established technology for video surveillance, for user authentication, for tagging photos of friends, etc. This paper demonstrates that…

Cryptography and Security · Computer Science 2022-01-26 Stefan Vamosi , Michael Platzer , Thomas Reutterer