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Detecting facial forgery images and videos is an increasingly important topic in multimedia forensics. As forgery images and videos are usually compressed into different formats such as JPEG and H264 when circulating on the Internet,…

计算机视觉与模式识别 · 计算机科学 2021-05-13 Shenhao Cao , Qin Zou , Xiuqing Mao , Zhongyuan Wang

All-in-Focus (AIF) photography is expected to be a commercial selling point for modern smartphones. Standard AIF synthesis requires manual, time-consuming operations such as focal stack compositing, which is unfriendly to ordinary people.…

计算机视觉与模式识别 · 计算机科学 2023-04-12 Xianrui Luo , Juewen Peng , Weiyue Zhao , Ke Xian , Hao Lu , Zhiguo Cao

Synthetic image generation has opened up new opportunities but has also created threats in regard to privacy, authenticity, and security. Detecting fake images is of paramount importance to prevent illegal activities, and previous research…

计算机视觉与模式识别 · 计算机科学 2023-02-27 Md Awsafur Rahman , Bishmoy Paul , Najibul Haque Sarker , Zaber Ibn Abdul Hakim , Shaikh Anowarul Fattah

Cameras in modern devices such as smartphones, satellites and medical equipment are capable of capturing very high resolution images and videos. Such high-resolution data often need to be processed by deep learning models for cancer…

计算机视觉与模式识别 · 计算机科学 2022-12-07 Arian Bakhtiarnia , Qi Zhang , Alexandros Iosifidis

The rapid evolution of generative adversarial networks (GANs) and diffusion models has made synthetic media increasingly realistic, raising societal concerns around misinformation, identity fraud, and digital trust. Existing deepfake…

计算机视觉与模式识别 · 计算机科学 2025-11-03 Sales Aribe

The proliferation of AI-generated imagery and sophisticated editing tools has rendered traditional forensic methods ineffective for cross-domain forgery detection. We present ForensicFormer, a hierarchical multi-scale framework that unifies…

计算机视觉与模式识别 · 计算机科学 2026-01-15 Hema Hariharan Samson

Fully homomorphic encryption (FHE) has experienced significant development and continuous breakthroughs in theory, enabling its widespread application in various fields, like outsourcing computation and secure multi-party computing, in…

密码学与安全 · 计算机科学 2023-03-21 Yanwei Gong , Xiaolin Chang , Jelena Mišić , Vojislav B. Mišić , Jianhua Wang , Haoran Zhu

Detection of high impedance faults (HIF) has been one of the biggest challenges in the power distribution network. The low current magnitude and diverse characteristics of HIFs make them difficult to be detected by over-current relays.…

机器学习 · 计算机科学 2024-02-06 Yingxiang Liu , Mohammad Razeghi-Jahromi , James Stoupis

A Previously traditional methods were sufficient to protect the information, since it is simplicity in the past does not need complicated methods but with the progress of information technology, it become easy to attack systems, and…

密码学与安全 · 计算机科学 2010-02-12 Rafiqul Islam , A. W. Naji , A. A. Zaidan , B. B. Zaidan

The FITS (Flexible Image Transport System) data format was developed in the late 1970s for storage and exchange of astronomy-related image data. Since then, it has become a standard file format not only for images, but also for radio…

天体物理仪器与方法 · 物理学 2014-11-04 Danny C. Price , Benjamin R. Barsdell , Lincoln J. Greenhill

Recent advances in camera design and imaging technology have enabled the capture of high-quality images using smartphones. However, due to the limited dynamic range of digital cameras, the quality of photographs captured in environments…

图像与视频处理 · 电气工程与系统科学 2024-10-02 Lucas Nedel Kirsten , Zhicheng Fu , Nikhil Ambha Madhusudhana

Due to the increasing security standards of modern smartphones, forensic data acquisition from such devices is a growing challenge. One rather generic way to access data on smartphones in practice is to use the local backup mechanism…

密码学与安全 · 计算机科学 2024-04-22 Julian Geus , Jenny Ottmann , Felix Freiling

The dissection of hyperspectral images into intrinsic components through hyperspectral intrinsic image decomposition (HIID) enhances the interpretability of hyperspectral data, providing a foundation for more accurate classification…

计算机视觉与模式识别 · 计算机科学 2023-11-28 Zhiqiang Gong , Xian Zhou , Wen Yao , Xiaohu Zheng , Ping Zhong

This study presents an iterative adaptive compression model for high-resolution DPX-derived TIFF files used in cinematographic workflows and digital preservation. The model employs SSIM and PSNR metrics to dynamically adjust compression…

计算机视觉与模式识别 · 计算机科学 2025-01-28 Leonardo Melo , Filipe Litaiff

The JPEG standard was vastly successful. Currently, the first AI-based compression method ``JPEG AI'' will be standardized. JPEG AI brings remarkable benefits. JPEG AI images exhibit impressive image quality at bitrates that are an order of…

计算机视觉与模式识别 · 计算机科学 2025-12-09 Sandra Bergmann , Fabian Brand , Christian Riess

Broad-band imaging and even imaging with a moderate bandpass (about 1 nm) provides a "photon-rich" environment, where frame selection ("lucky imaging") becomes a helpful tool in image restoration allowing us to perform a cost-benefit…

太阳与恒星天体物理 · 物理学 2018-02-28 C. Denker , E. Dineva , H. Balthasar , M. Verma , C. Kuckein , A. Diercke , S. J. González Manrique

This paper introduces QA-HFL, a quality-aware hierarchical federated learning framework that efficiently handles heterogeneous image quality across resource-constrained mobile devices. Our approach trains specialized local models for…

密码学与安全 · 计算机科学 2025-09-23 Sajid Hussain , Muhammad Sohail , Nauman Ali Khan

In contrast to the common habit of taking full bitwise copies of storage devices before analysis, selective imaging promises to alleviate the problems created by the increasing capacity of storage devices. Imaging is selective if only…

其他计算机科学 · 计算机科学 2020-12-07 Fabian Faust , Aurélien Thierry , Tilo Müller , Felix Freiling

High-impedance faults (HIF) are difficult to detect because of their low current amplitude and highly diverse characteristics. In recent years, machine learning (ML) has been gaining popularity in HIF detection because ML techniques learn…

机器学习 · 计算机科学 2021-06-28 Khushwant Rai , Farnam Hojatpanah , Firouz Badrkhani Ajaei , Katarina Grolinger

Deepfake detection has become a fundamental component of modern media forensics. Despite significant progress in detection accuracy, most existing methods remain computationally intensive and parameter-heavy, limiting their deployment on…

计算机视觉与模式识别 · 计算机科学 2026-04-13 Xiangyu Li , Yujing Sun , Yuhang Zheng , Yuexin Ma , Kwok-Yan Lam