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This paper presents a reversible data hiding in encrypted image that employs based notions of the RDH in plain-image schemes including histogram modification and prediction-error computation. In the proposed method, original image may be…

Image and Video Processing · Electrical Eng. & Systems 2023-06-06 Ammar Mohammadi

In artificial intelligence, any model that wants to achieve a good result is inseparable from a large number of high-quality data. It is especially true in the field of tamper detection. This paper proposes a modified total variation noise…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Xinyu Yang , Jizhe Zhou

Computationally efficient, accurate, and privacy-preserving data storage and retrieval are among the key challenges faced by practical deployments of biometric identification systems worldwide. In this work, a method of protected indexing…

Computer Vision and Pattern Recognition · Computer Science 2021-07-28 Pawel Drozdowski , Fabian Stockhardt , Christian Rathgeb , Dailé Osorio-Roig , Christoph Busch

We present a novel discrete optimization-based approach to generate downsampled versions of binary images that are guaranteed to have the same topology as the original, measured by the zeroth and first Betti numbers of the black regions,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-26 Chia-Chia Chen , Chi-Han Peng

Nowadays, facial recognition systems are still vulnerable to adversarial attacks. These attacks vary from simple perturbations of the input image to modifying the parameters of the recognition model to impersonate an authorised subject.…

Computer Vision and Pattern Recognition · Computer Science 2023-10-05 Daile Osorio-Roig , Mahdi Ghafourian , Christian Rathgeb , Ruben Vera-Rodriguez , Christoph Busch , Julian Fierrez

The traditional reversible data hiding technique is based on cover image modification which inevitably leaves some traces of rewriting that can be more easily analyzed and attacked by the warder. Inspired by the cover synthesis…

Image and Video Processing · Electrical Eng. & Systems 2019-07-31 Zhuo Zhang , Guangyuan Fu , Fuqiang Di , Changlong Li , Jia Liu

Preserving privacy is a growing concern in our society where sensors and cameras are ubiquitous. In this work, for the first time, we propose a trainable image acquisition method that removes the sensitive identity revealing information in…

Computer Vision and Pattern Recognition · Computer Science 2021-06-29 Yamin Sepehri , Pedram Pad , Pascal Frossard , L. Andrea Dunbar

In recent decades, 3D morphable model (3DMM) has been commonly used in image-based photorealistic 3D face reconstruction. However, face images are often corrupted by serious occlusion by non-face objects including eyeglasses, masks, and…

Computer Vision and Pattern Recognition · Computer Science 2019-09-09 Xiaowei Yuan , In Kyu Park

The science of hiding secret information in another message is known as Steganography; hence the presence of secret information is concealed. It is the method of hiding cognitive content in same or another media to avoid recognition by the…

Multimedia · Computer Science 2014-10-14 Soumendu Chakraborty , Anand Singh Jalal , Charul Bhatnagar

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

We propose a variational regularisation approach for the problem of template-based image reconstruction from indirect, noisy measurements as given, for instance, in X-ray computed tomography. An image is reconstructed from such measurements…

Optimization and Control · Mathematics 2019-04-02 Lukas F. Lang , Sebastian Neumayer , Ozan Öktem , Carola-Bibiane Schönlieb

Blind face restoration (BFR) has attracted increasing attention with the rise of generative methods. Most existing approaches integrate generative priors into the restoration pro- cess, aiming to jointly address facial detail generation and…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Venkata Bharath Reddy Reddem , Akshay P Sarashetti , Ranjith Merugu , Amit Satish Unde

This work proposes an improved reversible data hiding scheme in encrypted images using parametric binary tree labeling(IPBTL-RDHEI), which takes advantage of the spatial correlation in the entire original image but not in small image blocks…

Multimedia · Computer Science 2021-10-19 Youqing Wu , Youzhi Xiang , Yutang Guo , Jin Tang , Zhaoxia Yin

One-shot face re-enactment is a challenging task due to the identity mismatch between source and driving faces. Specifically, the suboptimally disentangled identity information of driving subjects would inevitably interfere with the…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Yunfan Liu , Qi Li , Zhenan Sun , Tieniu Tan

We propose contrastive coding to learn shared, dense image representations, referred to as CoMIRs (Contrastive Multimodal Image Representations). CoMIRs enable the registration of multimodal images where existing registration methods often…

Computer Vision and Pattern Recognition · Computer Science 2021-01-14 Nicolas Pielawski , Elisabeth Wetzer , Johan Öfverstedt , Jiahao Lu , Carolina Wählby , Joakim Lindblad , Nataša Sladoje

Recent advancements in text-to-image generation have enabled significant progress in zero-shot 3D shape generation. This is achieved by score distillation, a methodology that uses pre-trained text-to-image diffusion models to optimize the…

Computer Vision and Pattern Recognition · Computer Science 2023-05-29 Zhenzhen Weng , Zeyu Wang , Serena Yeung

Invisible watermarks safeguard images' copyrights by embedding hidden messages only detectable by owners. They also prevent people from misusing images, especially those generated by AI models. We propose a family of regeneration attacks to…

Cryptography and Security · Computer Science 2024-11-01 Xuandong Zhao , Kexun Zhang , Zihao Su , Saastha Vasan , Ilya Grishchenko , Christopher Kruegel , Giovanni Vigna , Yu-Xiang Wang , Lei Li

Nerf-based Generative models have shown impressive capacity in generating high-quality images with consistent 3D geometry. Despite successful synthesis of fake identity images randomly sampled from latent space, adopting these models for…

Computer Vision and Pattern Recognition · Computer Science 2022-12-01 Yu Yin , Kamran Ghasedi , HsiangTao Wu , Jiaolong Yang , Xin Tong , Yun Fu

The success of deep learning is partly attributed to the availability of massive data downloaded freely from the Internet. However, it also means that users' private data may be collected by commercial organizations without consent and used…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Qi Tian , Kun Kuang , Kelu Jiang , Furui Liu , Zhihua Wang , Fei Wu

In face recognition systems, facial templates are widely adopted for identity authentication due to their compliance with the data minimization principle. However, facial template inversion technologies have posed a severe privacy leakage…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Zixuan Shen , Zhihua Xia , Kaikai Gan , Peipeng Yu