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We consider the problem of detecting anomalies among a given set of processes using their noisy binary sensor measurements. The noiseless sensor measurement corresponding to a normal process is 0, and the measurement is 1 if the process is…

信号处理 · 电气工程与系统科学 2020-06-02 Geethu Joseph , M. Cenk Gursoy , Pramod K. Varshney

This paper considers the problem of error correction in multi-class classification of face images on unbalanced samples. The study is based on the analysis of a data frame containing images labeled by seven different emotional states of…

计算机视觉与模式识别 · 计算机科学 2025-10-07 Andrey A. Lebedev , Victor B. Kazantsev , Sergey V. Stasenko

We explore means to advance source camera identification based on sensor noise in a data-driven framework. Our focus is on improving the sensor pattern noise (SPN) extraction from a single image at test time. Where existing works suppress…

计算机视觉与模式识别 · 计算机科学 2020-02-10 Matthias Kirchner , Cameron Johnson

Image manipulation detection is different from traditional semantic object detection because it pays more attention to tampering artifacts than to image content, which suggests that richer features need to be learned. We propose a…

计算机视觉与模式识别 · 计算机科学 2018-05-15 Peng Zhou , Xintong Han , Vlad I. Morariu , Larry S. Davis

Automated medical image segmentation is an important step in many medical procedures. Recently, deep learning networks have been widely used for various medical image segmentation tasks, with U-Net and generative adversarial nets (GANs)…

图像与视频处理 · 电气工程与系统科学 2020-01-09 Balamurali Murugesan , Kaushik Sarveswaran , Vijaya Raghavan S , Sharath M Shankaranarayana , Keerthi Ram , Mohanasankar Sivaprakasam

This paper considers the problem of image set-based face verification and identification. Unlike traditional single sample (an image or a video) setting, this situation assumes the availability of a set of heterogeneous collection of…

计算机视觉与模式识别 · 计算机科学 2019-08-07 Xiaofeng Liu , Zhenhua Guo , Jane You , B. V. K Vijaya Kumar

While deep learning has led to huge progress in complex image classification tasks like ImageNet, unexpected failure modes, e.g. via spurious features, call into question how reliably these classifiers work in the wild. Furthermore, for…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Maximilian Augustin , Yannic Neuhaus , Matthias Hein

We propose a method to improve steganography by increasing the resilience of stego-media to discovery through steganalysis. Our approach enhances a class of steganographic approaches through the inclusion of a steganographic assistant…

密码学与安全 · 计算机科学 2023-04-26 Andrew Havard , Theodore Manikas , Eric C. Larson , Mitchell A. Thornton

Image stabilization performed during imaging and/or post-processing poses one of the most significant challenges to photo-response non-uniformity based source camera attribution from videos. When performed digitally, stabilization involves…

图像与视频处理 · 电气工程与系统科学 2020-11-25 Enes Altinisik , Husrev Taha Sencar

3D steganalysis aims to identify subtle invisible changes produced in graphical objects through digital watermarking or steganography. Sets of statistical representations of 3D features, extracted from both cover and stego 3D mesh objects,…

密码学与安全 · 计算机科学 2017-06-21 Zhenyu Li , Adrian G. Bors

Nowadays a steganography has to face challenges of both feature based staganalysis and convolutional neural network (CNN) based steganalysis. In this paper, we present a novel steganography scheme denoted as ITE-SYN (based on ITEratively…

计算机视觉与模式识别 · 计算机科学 2021-01-14 Xinghong Qin , Shunquan Tan , Bin Li , Weixuan Tang , Jiwu Huang

Diffusion models achieve remarkable quality in image generation, but at a cost. Iterative denoising requires many time steps to produce high fidelity images. We argue that the denoising process is crucially limited by an accumulation of the…

计算机视觉与模式识别 · 计算机科学 2023-12-12 Hui Lu , Albert ali Salah , Ronald Poppe

An autonomous driving system requires a 3D object detector, which must perceive all present road agents reliably to navigate an environment safely. However, real-world driving datasets often suffer from the problem of data imbalance, which…

计算机视觉与模式识别 · 计算机科学 2022-10-10 Daeun Lee , Jongwon Park , Jinkyu Kim

Video steganography has the potential to be used to convey illegal information, and video steganalysis is a vital tool to detect the presence of this illicit act. Currently, all the motion vector (MV)-based video steganalysis algorithms…

多媒体 · 计算机科学 2023-10-12 Jun Li , Minqing Zhang , Ke Niu , Yingnan Zhang , Xiaoyuan Yang

Quality control (QC) of medical images is essential to ensure that downstream analyses such as segmentation can be performed successfully. Currently, QC is predominantly performed visually at significant time and operator cost. We aim to…

图像与视频处理 · 电气工程与系统科学 2020-02-03 Richard Shaw , Carole H. Sudre , Sebastien Ourselin , M. Jorge Cardoso

Convolutional Neural Networks (CNN) based methods have significantly improved the performance of image steganalysis compared with conventional ones based on hand-crafted features. However, many existing literatures on computer vision have…

多媒体 · 计算机科学 2019-10-03 Huaxiao Mo , Tingting Song , Bolin Chen , Weiqi Luo , Jiwu Huang

With the rapid advancement of generative AI, AI-generated images have become increasingly realistic, raising concerns about creativity, misinformation, and content authenticity. Detecting such images and identifying their source models has…

计算机视觉与模式识别 · 计算机科学 2025-03-17 Tsan-Tsung Yang , I-Wei Chen , Kuan-Ting Chen , Shang-Hsuan Chiang , Wen-Chih Peng

We study the problem of detecting change points (CPs) that are characterized by a subset of dimensions in a multi-dimensional sequence. A method for detecting those CPs can be formulated as a two-stage method: one for selecting relevant…

机器学习 · 统计学 2018-03-05 Yuta Umezu , Ichiro Takeuchi

Despite the rapid progress, existing works on action understanding focus strictly on one type of action agent, which we call actor---a human adult, ignoring the diversity of actions performed by other actors. To overcome this narrow…

计算机视觉与模式识别 · 计算机科学 2017-05-01 Chenliang Xu , Caiming Xiong , Jason J. Corso

Visual anomaly detection, an important problem in computer vision, is usually formulated as a one-class classification and segmentation task. The student-teacher (S-T) framework has proved to be effective in solving this challenge. However,…

计算机视觉与模式识别 · 计算机科学 2023-03-22 Xuan Zhang , Shiyu Li , Xi Li , Ping Huang , Jiulong Shan , Ting Chen