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Convolutional Neural Networks have achieved significant success across multiple computer vision tasks. However, they are vulnerable to carefully crafted, human-imperceptible adversarial noise patterns which constrain their deployment in…

Computer Vision and Pattern Recognition · Computer Science 2020-01-08 Aamir Mustafa , Salman H. Khan , Munawar Hayat , Jianbing Shen , Ling Shao

Self-supervised representation learning techniques have been developing rapidly to make full use of unlabeled images. They encode images into rich features that are oblivious to downstream tasks. Behind their revolutionary representation…

Cryptography and Security · Computer Science 2023-03-28 Zeyang Sha , Xinlei He , Ning Yu , Michael Backes , Yang Zhang

Protection of faces in pictures and videos of people in connection with sensitive information, activism, abused cases and others on public broadcasting media and social net- works is very important. On social networks like YouTube,facebook,…

Cryptography and Security · Computer Science 2013-07-25 Quist-Aphetsi Kester

Recently, the vulnerability of deep image classification models to adversarial attacks has been investigated. However, such an issue has not been thoroughly studied for image-to-image tasks that take an input image and generate an output…

Computer Vision and Pattern Recognition · Computer Science 2022-06-29 Jun-Ho Choi , Huan Zhang , Jun-Hyuk Kim , Cho-Jui Hsieh , Jong-Seok Lee

In recent work, various fractal image coding methods are reported, which adopt the self-similarity of images to compress the size of images. However, till now, no solutions for the security of fractal encoded images have been provided. In…

Multimedia · Computer Science 2007-11-26 Shiguo Lian

As collaborative learning allows joint training of a model using multiple sources of data, the security problem has been a central concern. Malicious users can upload poisoned data to prevent the model's convergence or inject hidden…

Cryptography and Security · Computer Science 2021-01-21 Ximing Qiao , Yuhua Bai , Siping Hu , Ang Li , Yiran Chen , Hai Li

Cybersecurity practices require effort to be maintained, and one weakness is a lack of awareness regarding potential attacks not only in the usage of machine learning models, but also in their development process. Previous studies have…

Human-Computer Interaction · Computer Science 2024-08-15 Devon A. Kelly , Sarah A. Flanery , Christiana Chamon

In the recent world, security is a prime important issue, and encryption is one of the best alternative way to ensure security. More over, there are many image encryption schemes have been proposed, each one of them has its own strength and…

Cryptography and Security · Computer Science 2011-03-22 G. A. Sathishkumar , Dr. K. Bhoopathy bagan , Dr. N. Sriraam

The security of Fridrich Image Encryption Algorithm against brute-force attack, statistical attack, known-plaintext attack and select-plaintext attack is analyzed by investigating the properties of the involved chaotic maps and diffusion…

Multimedia · Computer Science 2007-05-23 Shiguo Lian , Jinsheng Sun , Zhiquan Wang

Medical image encryption could aid in preserving patient privacy. In this article, we provide a chaotic system-based medical picture encryption method. The diffusion and permutation architecture was used. The permutation based on plain…

Cryptography and Security · Computer Science 2024-06-13 Dr Chandra Sekhar Sanaboina , Tejaswini Yadla

We propose a novel method for securely training the vision transformer (ViT) with sensitive data shared from multiple clients similar to privacy-preserving federated learning. In the proposed method, training images are independently…

Cryptography and Security · Computer Science 2024-08-13 Rei Aso , Sayaka Shiota , Hitoshi Kiya

Discrete image tokenizers encode visual inputs as sequences of tokens from a finite vocabulary and are gaining popularity in multimodal systems, including encoder-only, encoder-decoder, and decoder-only models. However, unlike CLIP…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Rishika Bhagwatkar , Irina Rish , Nicolas Flammarion , Francesco Croce

Within the realm of computer vision, self-supervised learning (SSL) pertains to training pre-trained image encoders utilizing a substantial quantity of unlabeled images. Pre-trained image encoders can serve as feature extractors,…

Computer Vision and Pattern Recognition · Computer Science 2023-10-03 Qiannan Wang , Changchun Yin , Zhe Liu , Liming Fang , Run Wang , Chenhao Lin

Contrastive learning (CL) pre-trains general-purpose encoders using an unlabeled pre-training dataset, which consists of images or image-text pairs. CL is vulnerable to data poisoning based backdoor attacks (DPBAs), in which an attacker…

Cryptography and Security · Computer Science 2024-03-04 Jinghuai Zhang , Hongbin Liu , Jinyuan Jia , Neil Zhenqiang Gong

This work proposes a high-capacity scheme for separable reversible data hiding in encrypted images. At the sender side, the original uncompressed image is encrypted using an encryption key. One or several data hiders use the MSB of some…

Cryptography and Security · Computer Science 2016-12-14 M. Hassan Najafi , David J. Lilja

In this paper, a simple and robust color image encryption algorithm based on high-dimensional chaotic maps is proposed. The algorithm employs a 3D Arnold transform to perform inter-component shuffling of plain-image, while a 2D…

Cryptography and Security · Computer Science 2014-03-20 Musheer Ahmad , Hamed D Al-Sharari

The recently introduced approach for Encrypted Image Folding is generalized to make it Self Contained. The goal is achieved by enlarging the folded image so as to embed all the necessary information for the image recovery. The need for…

Mathematical Physics · Physics 2012-09-13 Laura Rebollo-Neira , James Bowley , Anthony Constantinides , Angel Plastino

This paper proposed several methods to transplant the compound chaotic image encryption scheme with permutation based on 3D baker into image formats as Joint Photographic Experts Group (JPEG) and Graphics Interchange Format (GIF). The new…

Cryptography and Security · Computer Science 2012-08-07 Shiyu Ji , Xiaojun Tong , Miao Zhang

Recently, a chaos-based image encryption algorithm called MCKBA (Modified Chaotic-Key Based Algorithm) was proposed. This paper analyzes the security of MCKBA and finds that it can be broken with a differential attack, which requires only…

Cryptography and Security · Computer Science 2016-10-04 Chengqing Li , Michael Z. Q. Chen , Kwok-Tung Lo

Conventional covert image communication is assumed to transmit the message, in the securest way possible for a given payload, over lossless channels, and the associated steganographic schemes are generally vulnerable to active attacks,…

Multimedia · Computer Science 2022-12-07 Qingliang Liu , Jiangqun Ni , Weizhe Zhang , Xiangyang Luo , Jiwu Huang
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