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Biometric identification is a reliable method to verify individuals based on their unique physical or behavioral traits, offering a secure alternative to traditional methods like passwords or PINs. This study focuses on ear biometric…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Youssef Mohamed , Zeyad Youssef , Ahmed Heakl , Ahmed Zaky

This paper proposes a non-computational method of counteracting the effect of image degradation introduced by the diffraction phenomenon in lensless microscopy. All the optical images (whether focused by lenses or not) are diffraction…

Optics · Physics 2021-04-08 Sanjeev Kumar , Manjunatha Mahadevappa , Pranab Kumar Dutta

We report a light-field based method that allows the optical encryption of three-dimensional (3D) volumetric information at the microscopic scale in a single 2D light-field image. The system consists of a microlens array and an array of…

Cryptography and Security · Computer Science 2016-10-28 Haoyu Li , Changliang Guo , Inbarasan Muniraj , Bryce C. Schroeder , John T. Sheridan , Shu Jia

In this paper, we propose a lensless compressive sensing imaging architecture. The architecture consists of two components, an aperture assembly and a sensor. No lens is used. The aperture assembly consists of a two dimensional array of…

Computer Vision and Pattern Recognition · Computer Science 2013-02-08 Gang Huang , Hong Jiang , Kim Matthews , Paul Wilford

The development of signal unmixing algorithms is essential for leveraging multimodal datasets acquired through a wide array of scientific imaging technologies, including hyperspectral or time-resolved acquisitions. In experimental physics,…

The protection of confidential image data from unauthorized access is an important area of research in network communication. This paper presents a high-level security encryption scheme for gray scale images. The gray level image is first…

Multimedia · Computer Science 2012-03-12 G. Sudheer , B. V. S. Renuka Devi

Ensuring end-to-end security in image sensors has become essential as visual data can be exposed through multiple stages of the imaging pipeline. Advanced protection requires encryption to occur before pixel values appear on any readout…

Computer Vision and Pattern Recognition · Computer Science 2026-04-08 Md Rahatul Islam Udoy , Diego Ferrer , Wantong Li , Kai Ni , Sumeet Kumar Gupta , Ahmedullah Aziz

We introduce a conceptual framework for a lensless imaging system which employs an active metasurface as a high-frequency, continuously tunable amplitude and phase modulation aperture, coupled to a discrete single-pixel detector. Using an…

Optics · Physics 2024-11-14 Julie Belleville , Prachi Thureja , Harry A. Atwater

To secure the digital images over insecure transmission channels, a new image encryption algorithm Noise-Crypt is proposed in this paper. Noise-Crypt integrates non-linear random noise, hybrid chaotic maps, and SHA-256 hashing algorithm.…

Cryptography and Security · Computer Science 2023-09-21 Laiba Asghar , Fawad Ahmed , Muhammad Shahbaz Khan , Arshad Arshad , Jawad Ahmad

Usage of the fast development of real-life digital applications in modern technology should guarantee novel and efficient way-outs of their protection. Encryption facilitates the data hiding. With the express development of technology,…

Cryptography and Security · Computer Science 2025-02-26 Sachith Dassanayaka

Future quantum computers are likely to be expensive and affordable outright by few, motivating client/server models for outsourced computation. However, the applications for quantum computing will often involve sensitive data, and the…

Quantum Physics · Physics 2020-03-25 Yingkai Ouyang , Si-Hui Tan , Joseph Fitzsimons , Peter P. Rohde

Privacy concerns in healthcare have gained interest recently via GDPR, with a rising need for privacy-preserving data collection methods that keep personal information hidden in otherwise usable data. Sometimes data needs to be encrypted…

Cryptography and Security · Computer Science 2021-04-13 Mikko Impiö , Mehmet Yamaç , Jenni Raitoharju

Supervised learning methods can solve the given problem in the presence of a large set of labeled data. However, the acquisition of a dataset covering all the target classes typically requires manual labeling which is expensive and…

Sound · Computer Science 2022-06-13 Duygu Dogan , Huang Xie , Toni Heittola , Tuomas Virtanen

This paper proposes an improved steganography approach for hiding text messages in lossless RGB images. The objective of this work is to increase the security level and to improve the storage capacity with compression techniques. The…

Cryptography and Security · Computer Science 2013-04-18 Ankit Chaudhary , J. Vasavada , J. L. Raheja , S. Kumar , M. Sharma

Due to the widespread of advanced digital imaging devices, forgery of digital images became more serious attack patterns. In this attack scenario, the attacker tries to manipulate the digital image to conceal some meaningful information of…

Cryptography and Security · Computer Science 2021-10-20 Ahmed M. Nagm , Mohamed Torky , Mohammed Mahmoud Abo Ghazala , Hosam Eldin Fawzan Sayed

The use of Machine Learning (ML) for data-driven decision-making often relies on access to sensitive datasets, which introduces privacy challenges. Traditional encryption methods protect data at rest or in transit but fail to secure it…

Cryptography and Security · Computer Science 2026-04-28 Alexandre Marques , Beatriz Sá , Rui Botelho , Pedro Pinto

Embedded camera systems are ubiquitous, representing the most widely deployed example of a wireless embedded system. They capture a representation of the world - the surroundings illuminated by visible or infrared light. Despite their…

Image and Video Processing · Electrical Eng. & Systems 2024-02-07 Kunjun Li , Manoj Gulati , Steven Waskito , Dhairya Shah , Shantanu Chakrabarty , Ambuj Varshney

Data privacy and data security are always on highest priority in the world. We need a reliable method to encrypt the data so that it reaches the destination safely. Encryption is a simple yet effective way to protect our data while…

Multimedia · Computer Science 2020-02-07 Hanisha Chowdary N , Karan K , Bharath K P , Rajesh Kumar M

The digital image manipulation and advancements in Generative AI, such as Deepfake, has raised significant concerns regarding the authenticity of images shared on social media. Traditional image forensic techniques, while helpful, are often…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Chen-Hsiu Huang , Ja-Ling Wu

Neuromorphic systems, inspired by the complexity and functionality of the human brain, have gained interest in academic and industrial attention due to their unparalleled potential across a wide range of applications. While their…

Cryptography and Security · Computer Science 2024-01-23 Murat Isik , Hiruna Vishwamith , Yusuf Sur , Kayode Inadagbo , I. Can Dikmen