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Recently, large language models (LLMs) have driven promising progress in lossless image compression. However, directly adopting existing paradigms for medical images suffers from an unsatisfactory trade-off between compression performance…

Image and Video Processing · Electrical Eng. & Systems 2025-11-05 Pengcheng Zheng , Xiaorong Pu , Kecheng Chen , Jiaxin Huang , Meng Yang , Bai Feng , Yazhou Ren , Jianan Jiang , Chaoning Zhang , Yang Yang , Heng Tao Shen

Side-informed steganography has always been among the most secure approaches in the field. However, a majority of existing methods for JPEG images use the side information, here the rounding error, in a heuristic way. For the first time, we…

Multimedia · Computer Science 2023-04-24 Jan Butora , Patrick Bas

Image steganography camouflages secret messages in images by tampering image contents. There is a natural desire for hiding maximum secret information with the least possible distortions in the host image. This requires an algorithm that…

Cryptography and Security · Computer Science 2023-01-24 Laeeq Aslam Sandhu , Ebrahim Shahzad , Fatima Yaqoob , Sharjeel Abid Butt , Wasim Khan , I. M. Qureshi

In recent years, the security related to data over the internet has become a major issue. Different techniques are used to secure the information, one such technique is steganography. In steganography, one can have a cover media as an…

Cryptography and Security · Computer Science 2022-02-02 P N Priya , R Ranjitha , Yashaswini Naik , Shrilekha , Rama Moorthy H

Transmitting images for communication on social networks has become routine, which is helpful for covert communication. The traditional steganography algorithm is unable to successfully convey secret information since the social network…

Multimedia · Computer Science 2023-04-27 Xiaolong Duan , Bin Li , Zhaoxia Yin , Xinpeng Zhang , Bin Luo

A new technique for data hiding in digital image is proposed in this paper. Steganography is a well known technique for hiding data in an image, but generally the format of image plays a pivotal role in it, and the scheme is format…

Multimedia · Computer Science 2013-08-01 Adity Sharma , Anoo Agarwal , Vinay Kumar

Stochastic bilevel optimization finds widespread applications in machine learning, including meta-learning, hyperparameter optimization, and neural architecture search. To extend stochastic bilevel optimization to distributed data, several…

Machine Learning · Computer Science 2026-05-26 Yihan Zhang , My T. Thai , Jie Wu , Hongchang Gao

With the rapid development of deep learning, existing generative text steganography methods based on autoregressive models have achieved success. However, these autoregressive steganography approaches have certain limitations. Firstly,…

Cryptography and Security · Computer Science 2025-04-29 Zhengxian Wu , Juan Wen , Yiming Xue , Ziwei Zhang , Yinghan Zhou

Various gradient compression schemes have been proposed to mitigate the communication cost in distributed training of large scale machine learning models. Sign-based methods, such as signSGD, have recently been gaining popularity because of…

Optimization and Control · Mathematics 2021-06-25 Mher Safaryan , Peter Richtárik

As datasets and models become increasingly large, distributed training has become a necessary component to allow deep neural networks to train in reasonable amounts of time. However, distributed training can have substantial communication…

Machine Learning · Computer Science 2021-10-18 Jose Javier Gonzalez Ortiz , Jonathan Frankle , Mike Rabbat , Ari Morcos , Nicolas Ballas

Smoothing filter is the method of choice for image preprocessing and pattern recognition. We present a new concurrent method for smoothing 2D object in binary case. Proposed method provides a parallel computation while preserving the…

Distributed, Parallel, and Cluster Computing · Computer Science 2016-04-01 Ramzi Mahmoudi , Mohamed Akil

This paper proposes a novel method for segmentation of images by hierarchical multilevel thresholding. The method is global, agglomerative in nature and disregards pixel locations. It involves the optimization of the ratio of the unbiased…

Computer Vision and Pattern Recognition · Computer Science 2007-12-27 Sreechakra Goparaju , Jayadev Acharya , Ajoy K. Ray , Jaideva C. Goswami

We propose a new model of steganography based on a list of pseudo-randomly sorted sequences of characters. Given a list $L$ of $m$ columns containing $n$ distinct strings each, with low or no semantic relationship between columns taken two…

Cryptography and Security · Computer Science 2017-03-08 Rene Ndoundam , Stephane Gael R. Ekodeck

Diffusion model-based generative image steganography (DM-GIS) is an emerging paradigm that leverages the generative power of diffusion models to conceal secret messages without requiring pre-existing cover images. In this paper, we identify…

Cryptography and Security · Computer Science 2026-03-05 Jiahao Zhu , Zixuan Chen , Jiali Liu , Weiqi Luo , Yi Zhou , Xiaohua Xie

It is widely recognized that the image format is crucial to steganography for that each individual format has its unique properities. Nowadays, the most famous approach of digital image steganography is to combine a well-defined distortion…

Computer Vision and Pattern Recognition · Computer Science 2019-03-01 Wei Gao , Yongqing Huo , Yan Qiao

Homogeneous diffusion inpainting can reconstruct missing image areas with high quality from a sparse subset of known pixels, provided that their location as well as their gray or color values are well optimized. This property is exploited…

Image and Video Processing · Electrical Eng. & Systems 2024-08-13 Niklas Kämper , Vassillen Chizhov , Joachim Weickert

This paper proposed a DWT based Steganographic technique. Cover image is decomposed into four sub bands using DWT. Two secret images are embedded within the HL and HH sub bands respectively. During embedding secret images are dispersed…

Cryptography and Security · Computer Science 2012-09-04 Tanmay Bhattacharya , Nilanjan Dey , S. R. Bhadra Chaudhuri

Steganography is an information hiding technique in which secret data are secured by covering them into a computer carrier file without damaging the file or changing its size. The difference between steganography and cryptography is that…

Cryptography and Security · Computer Science 2012-12-27 Youssef Bassil

A novel accelerated mobile edge generation (MEG) framework is proposed for generating high-resolution images on mobile devices. Exploiting a large-scale latent diffusion model (LDM) distributed across edge server (ES) and user equipment…

Systems and Control · Electrical Eng. & Systems 2024-08-08 Xiaoxia Xu , Yuanwei Liu , Xidong Mu , Hong Xing , Arumugam Nallanathan

Steganography is the science of hiding digital information in such a way that no one can suspect its existence. Unlike cryptography which may arouse suspicions, steganography is a stealthy method that enables data communication in total…

Cryptography and Security · Computer Science 2013-01-01 Youssef Bassil