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We demonstrate that modern image recognition methods based on artificial neural networks can recover hidden information from images protected by various forms of obfuscation. The obfuscation techniques considered in this paper are mosaicing…

密码学与安全 · 计算机科学 2016-09-08 Richard McPherson , Reza Shokri , Vitaly Shmatikov

Personal photos of individuals when shared online, apart from exhibiting a myriad of memorable details, also reveals a wide range of private information and potentially entails privacy risks (e.g., online harassment, tracking). To mitigate…

计算机视觉与模式识别 · 计算机科学 2021-06-02 Hui-Po Wang , Tribhuvanesh Orekondy , Mario Fritz

Crowdsourced data used in machine learning services might carry sensitive information about attributes that users do not want to share. Various methods have been proposed to minimize the potential information leakage of sensitive attributes…

机器学习 · 计算机科学 2020-10-27 Han Zhao , Jianfeng Chi , Yuan Tian , Geoffrey J. Gordon

Identifying features that leak information about sensitive attributes is a key challenge in the design of information obfuscation mechanisms. In this paper, we propose a framework to identify information-leaking features via information…

信息论 · 计算机科学 2019-10-21 Hsiang Hsu , Shahab Asoodeh , Flavio du Pin Calmon

This work presents a comparison of machine learning algorithms that are implemented to segment the characters of text presented as an image. The algorithms are designed to work on degraded documents with text that is not aligned in an…

计算机视觉与模式识别 · 计算机科学 2021-07-29 P Preethi , Hrishikesh Viswanath

Watermarking plays a key role in the provenance and detection of AI-generated content. While existing methods prioritize robustness against real-world distortions (e.g., JPEG compression and noise addition), we reveal a fundamental…

计算机视觉与模式识别 · 计算机科学 2025-02-11 Zhongjie Ba , Yitao Zhang , Peng Cheng , Bin Gong , Xinyu Zhang , Qinglong Wang , Kui Ren

A novel algorithm for face obfuscation, called Forbes, which aims to obfuscate facial appearance recognizable by humans but preserve the identity and attributes decipherable by machines, is proposed in this paper. Forbes first applies…

计算机视觉与模式识别 · 计算机科学 2024-07-22 Jintae Kim , Seungwon yang , Seong-Gyun Jeong , Chang-Su Kim

We demonstrate that state-of-the-art optical character recognition (OCR) based on deep learning is vulnerable to adversarial images. Minor modifications to images of printed text, which do not change the meaning of the text to a human…

机器学习 · 计算机科学 2018-02-16 Congzheng Song , Vitaly Shmatikov

Face obfuscation (blurring, mosaicing, etc.) has been shown to be effective for privacy protection; nevertheless, object recognition research typically assumes access to complete, unobfuscated images. In this paper, we explore the effects…

计算机视觉与模式识别 · 计算机科学 2022-06-10 Kaiyu Yang , Jacqueline Yau , Li Fei-Fei , Jia Deng , Olga Russakovsky

Authorship attribution aims to identify the author of a text based on the stylometric analysis. Authorship obfuscation, on the other hand, aims to protect against authorship attribution by modifying a text's style. In this paper, we…

计算与语言 · 计算机科学 2020-05-05 Asad Mahmood , Zubair Shafiq , Padmini Srinivasan

We propose adversarial embedding, a new steganography and watermarking technique that embeds secret information within images. The key idea of our method is to use deep neural networks for image classification and adversarial attacks to…

密码学与安全 · 计算机科学 2019-12-04 Salah Ghamizi , Maxime Cordy , Mike Papadakis , Yves Le Traon

Face recognition systems are robust against environmental changes and noise, and thus may be vulnerable to illegal authentication attempts using user face photos, such as spoofing attacks. To prevent such spoofing attacks, it is crucial to…

计算机视觉与模式识别 · 计算机科学 2025-09-15 Shota Iwamatsu , Koichi Ito , Takafumi Aoki

High-performance visual recognition systems generally require a large collection of labeled images to train. The expensive data curation can be an obstacle for improving recognition performance. Sharing more data allows training for better…

计算机视觉与模式识别 · 计算机科学 2019-06-24 Tae-hoon Kim , Dongmin Kang , Kari Pulli , Jonghyun Choi

There are many difficulties facing a handwritten Arabic recognition system such as unlimited variation in human handwriting, similarities of distinct character shapes, interconnections of neighbouring characters and their position in the…

计算机视觉与模式识别 · 计算机科学 2014-02-27 Ahmed Sahlol , Cheng Suen

Optical Character Recognition (OCR) is a widely used tool to extract text from scanned documents. Today, the state-of-the-art is achieved by exploiting deep neural networks. However, the cost of this performance is paid at the price of…

密码学与安全 · 计算机科学 2023-10-13 Mauro Conti , Nicola Farronato , Stefanos Koffas , Luca Pajola , Stjepan Picek

In a world of digitization, optical character recognition holds the automation to written history. Optical character recognition system basically converts printed images into editable texts for better storage and usability. To be completely…

计算机视觉与模式识别 · 计算机科学 2021-01-06 Abu Saleh Md. Abir , Sanjana Rahman , Samia Ellin , Maisha Farzana , Md Hridoy Manik , Chowdhury Rafeed Rahman

Human pose information is a critical component in many downstream image processing tasks, such as activity recognition and motion tracking. Likewise, a pose estimator for the illustrated character domain would provide a valuable prior for…

计算机视觉与模式识别 · 计算机科学 2021-12-02 Shuhong Chen , Matthias Zwicker

To avoid detection, adversaries often use command-line obfuscation. There are numerous techniques of the command-line obfuscation, all designed to alter the command-line syntax without affecting its original functionality. This variability…

密码学与安全 · 计算机科学 2024-08-06 Vojtech Outrata , Michael Adam Polak , Martin Kopp

The widespread adoption of face recognition has led to increasing privacy concerns, as unauthorized access to face images can expose sensitive personal information. This paper explores face image protection against viewing and recovery…

计算机视觉与模式识别 · 计算机科学 2024-03-20 Yuxi Mi , Zhizhou Zhong , Yuge Huang , Jiazhen Ji , Jianqing Xu , Jun Wang , Shaoming Wang , Shouhong Ding , Shuigeng Zhou

Traditional permutation schemes mostly focus on random scrambling of pixels, often neglecting the intrinsic image information that could enhance diffusion in image encryption algorithms. This paper introduces PermutEx, a…

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