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Image repurposing is a commonly used method for spreading misinformation on social media and online forums, which involves publishing untampered images with modified metadata to create rumors and further propaganda. While manual…

计算机视觉与模式识别 · 计算机科学 2019-04-11 Ayush Jaiswal , Yue Wu , Wael AbdAlmageed , Iacopo Masi , Premkumar Natarajan

In this paper, detection of deception attack on deep neural network (DNN) based image classification in autonomous and cyber-physical systems is considered. Several studies have shown the vulnerability of DNN to malicious deception attacks.…

图像与视频处理 · 电气工程与系统科学 2020-07-10 Darpan Kumar Yadav , Kartik Mundra , Rahul Modpur , Arpan Chattopadhyay , Indra Narayan Kar

Recent research has established the possibility of deducing soft-biometric attributes such as age, gender and race from an individual's face image with high accuracy. However, this raises privacy concerns, especially when face images…

计算机视觉与模式识别 · 计算机科学 2021-03-16 Vahid Mirjalili , Sebastian Raschka , Arun Ross

Image or object recognition is an important task in computer vision. With the hight-speed processing power on modern platforms and the availability of mobile phones everywhere, millions of photos are uploaded to the internet per minute, it…

计算机视觉与模式识别 · 计算机科学 2017-06-06 Yong Khoo , Seo-hyeon Keun

Image hallucination and super-resolution have been studied for decades, and many approaches have been proposed to upsample low-resolution images using information from the images themselves, multiple example images, or large image…

计算机视觉与模式识别 · 计算机科学 2018-06-05 Chieh-Chi Kao , Yuxiang Wang , Jonathan Waltman , Pradeep Sen

The model of camera that was used to capture a particular photographic image (model attribution) is typically inferred from high-frequency model-specific artifacts present within the image. Model anonymization is the process of transforming…

图像与视频处理 · 电气工程与系统科学 2021-01-05 Jerone T. A. Andrews , Yidan Zhang , Lewis D. Griffin

In this paper, an image denoising algorithm is proposed for salt and pepper noise. First, a generative model is built on a patch as a basic unit and then the algorithm locates the image noise within that patch in order to better describe…

计算机视觉与模式识别 · 计算机科学 2018-07-17 Bo Fu , Xiao-Yang Zhao , Yong-Gong Ren , Xi-Ming Li , Xiang-Hai Wang

We propose a reversible face de-identification method for low resolution video data, where landmark-based techniques cannot be reliably used. Our solution is able to generate a photo realistic de-identified stream that meets the data…

计算机视觉与模式识别 · 计算机科学 2020-07-10 Hugo Proença

The effectiveness of existing denoising algorithms typically relies on accurate pre-defined noise statistics or plenty of paired data, which limits their practicality. In this work, we focus on denoising in the more common case where noise…

图像与视频处理 · 电气工程与系统科学 2020-12-01 Huangxing Lin , Yihong Zhuang , Yue Huang , Xinghao Ding , Yizhou Yu , Xiaoqing Liu , John Paisley

Localized adversarial patches aim to induce misclassification in machine learning models by arbitrarily modifying pixels within a restricted region of an image. Such attacks can be realized in the physical world by attaching the adversarial…

计算机视觉与模式识别 · 计算机科学 2021-04-01 Chong Xiang , Arjun Nitin Bhagoji , Vikash Sehwag , Prateek Mittal

Data augmentation is a widely used technique for enhancing the generalization ability of convolutional neural networks (CNNs) in image classification tasks. Occlusion is a critical factor that affects on the generalization ability of image…

计算机视觉与模式识别 · 计算机科学 2022-11-30 Suorong Yang , Jinqiao Li , Jian Zhao , Furao Shen

Recent work on image anonymization has shown that generative adversarial networks (GANs) can generate near-photorealistic faces to anonymize individuals. However, scaling up these networks to the entire human body has remained a challenging…

计算机视觉与模式识别 · 计算机科学 2023-06-02 Håkon Hukkelås , Morten Smebye , Rudolf Mester , Frank Lindseth

Almost all existing methods for image restoration are based on optimizing the mean squared error (MSE), even though it is known that the best estimate in terms of MSE may yield a highly atypical image due to the fact that there are many…

计算机视觉与模式识别 · 计算机科学 2021-04-21 Roy Friedman , Yair Weiss

Most unsupervised domain adaptation (UDA) methods assume that labeled source images are available during model adaptation. However, this assumption is often infeasible owing to confidentiality issues or memory constraints on mobile devices.…

计算机视觉与模式识别 · 计算机科学 2023-03-17 JoonHo Lee , Gyemin Lee

Sensor pattern noise has been found to be a reliable tool for providing information relating to the provenance of an image. Conventionally sensor pattern noise is modelled as a mutual interaction of pixel non-uniformity noise and dark…

图像与视频处理 · 电气工程与系统科学 2019-01-09 Richard Matthews , Matthew Sorell , Nickolas Falkner

We assess the variability of PRNU-based camera fingerprints with mismatched imaging pipelines (e.g., different camera ISP or digital darkroom software). We show that camera fingerprints exhibit non-negligible variations in this setup, which…

图像与视频处理 · 电气工程与系统科学 2020-10-13 Sharad Joshi , Pawel Korus , Nitin Khanna , Nasir Memon

Spectral unmixing (SU) is a technique to characterize mixed pixels in hyperspectral images measured by remote sensors. Most of the spectral unmixing algorithms are developed using the linear mixing models. To estimate endmembers and…

计算机视觉与模式识别 · 计算机科学 2019-02-21 Sara Khoshsokhan , Roozbeh Rajabi , Hadi Zayyani

Unsupervised image transfer enables intra- and inter-modality image translation in applications where a large amount of paired training data is not abundant. To ensure a structure-preserving mapping from the input to the target domain,…

计算机视觉与模式识别 · 计算机科学 2022-09-05 Christoph Angermann , Markus Haltmeier , Ahsan Raza Siyal

The rapid development of deep learning techniques has created new challenges in identifying the origin of digital images because generative adversarial networks and variational autoencoders can create plausible digital images whose contents…

计算机视觉与模式识别 · 计算机科学 2019-11-05 Rong Huang , Fuming Fang , Huy H. Nguyen , Junichi Yamagishi , Isao Echizen

The non-local self-similarity property of natural images has been exploited extensively for solving various image processing problems. When it comes to video sequences, harnessing this force is even more beneficial due to the temporal…

计算机视觉与模式识别 · 计算机科学 2021-11-02 Gregory Vaksman , Michael Elad , Peyman Milanfar