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While many image colorization algorithms have recently shown the capability of producing plausible color versions from gray-scale photographs, they still suffer from the problems of context confusion and edge color bleeding. To address…

Computer Vision and Pattern Recognition · Computer Science 2018-08-07 Jiaojiao Zhao , Li Liu , Cees G. M. Snoek , Jungong Han , Ling Shao

Methods for watermarking large language models have been proposed that distinguish AI-generated text from human-generated text by slightly altering the model output distribution, but they also distort the quality of the text, exposing the…

Computation and Language · Computer Science 2024-02-27 Massieh Kordi Boroujeny , Ya Jiang , Kai Zeng , Brian Mark

This paper applies the quadtree structure for image coding. The goal is to adapt the block size and thus to increase the compression ratio (without reducing SNR). Also, the computational time is not significatively increased. It has been…

Image and Video Processing · Electrical Eng. & Systems 2022-03-02 Marcos Faundez-Zanuy , Xavi Domingo-Reguant

Color and structure are the two pillars that combine to give an image its meaning. Interested in critical structures for neural network recognition, we isolate the influence of colors by limiting the color space to just a few bits, and find…

Computer Vision and Pattern Recognition · Computer Science 2022-08-18 Yunzhong Hou , Liang Zheng , Stephen Gould

Two-dimensional color codes are a promising candidate for fault-tolerant quantum computing, as they have high encoding rates, transversal implementation of logical Clifford gates, and resource-efficient magic state preparation schemes.…

Quantum Physics · Physics 2025-01-29 Seok-Hyung Lee , Andrew Li , Stephen D. Bartlett

Existing camouflaged object detection (COD) methods rely heavily on large-scale datasets with pixel-wise annotations. However, due to the ambiguous boundary, annotating camouflage objects pixel-wisely is very time-consuming and…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Ruozhen He , Qihua Dong , Jiaying Lin , Rynson W. H. Lau

Content-independent watermarks and block-wise independency can be considered as vulnerabilities in semi-fragile watermarking methods. In this paper to achieve the objectives of semi-fragile watermarking techniques, a method is proposed to…

Computer Vision and Pattern Recognition · Computer Science 2021-06-29 Samira Hosseini , Mojtaba Mahdavi

Block encoding is a successful technique used in several powerful quantum algorithms. In this work we provide an explicit quantum circuit for block encoding a sparse matrix with a periodic diagonal structure. The proposed methodology is…

Watermarking is one of the most important copyright protection tools for digital media. The most challenging type of watermarking is the imperceptible one, which embeds identifying information in the data while retaining the latter's…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Natan Semyonov , Rami Puzis , Asaf Shabtai , Gilad Katz

Some state-of-art multimedia source encoders produce embedded source bit streams that upon the reliable reception of only a fraction of the total bit stream, the decoder is able reconstruct the source up to a basic quality. Reliable…

Multimedia · Computer Science 2014-03-04 Suayb S. Arslan

With the rapid development of the multimedia,the secure of the multimedia is get more concerned. as far as we know , Digital watermarking is an effective way to protect copyright. The watermark must be generally hidden does not affect the…

Multimedia · Computer Science 2015-02-11 Ke Ji , Jianbiao Lin , Hui Li , Ao Wang , Tianjing Tang

In this paper, two image encryption schemes are proposed for grayscale and color images. The two encryption schemes are based on dividing each image into blocks of different sizes. In the first scheme, the two dimension ($2$D) input image…

Cryptography and Security · Computer Science 2018-02-22 Omar Reyad , M. A. Mofaddel , W. M. Abd-Elhafiez , Mohamed Fathy

Digital watermarking enables protection against copyright infringement of images. Although existing methods embed watermarks imperceptibly and demonstrate robustness against attacks, they typically lack resilience against geometric…

Multimedia · Computer Science 2024-02-15 Hannes Mareen , Lucas Antchougov , Glenn Van Wallendael , Peter Lambert

Watermarking diffusion-generated images is crucial for copyright protection and user tracking. However, current diffusion watermarking methods face significant limitations: zero-bit watermarking systems lack the capacity for large-scale…

Cryptography and Security · Computer Science 2025-09-01 Jiazheng Xing , Hai Ci , Hongbin Xu , Hangjie Yuan , Yong Liu , Mike Zheng Shou

Color and structure are the two pillars that construct an image. Usually, the structure is well expressed through a rich spectrum of colors, allowing objects in an image to be recognized by neural networks. However, under extreme…

Computer Vision and Pattern Recognition · Computer Science 2021-05-12 Yunzhong Hou , Liang Zheng , Stephen Gould

Invisible watermarking of AI-generated images can help with copyright protection, enabling detection and identification of AI-generated media. In this work, we present a novel approach to watermark images of T2I Latent Diffusion Models…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Naresh Kumar Devulapally , Mingzhen Huang , Vishal Asnani , Shruti Agarwal , Siwei Lyu , Vishnu Suresh Lokhande

Index coding achieves bandwidth savings by jointly encoding the messages demanded by all the clients in a broadcast channel. The encoding is performed in such a way that each client can retrieve its demanded message from its side…

Information Theory · Computer Science 2018-01-12 Lakshmi Natarajan , Prasad Krishnan , V. Lalitha

As an efficient watermark attack method, geometric distortions destroy the synchronization between watermark encoder and decoder. And the local geometric distortion is a famous challenge in the watermark field. Although a lot of geometric…

Multimedia · Computer Science 2023-02-07 Zehua Ma , Weiming Zhang , Han Fang , Xiaoyi Dong , Linfeng Geng , Nenghai Yu

We propose a novel error concealment algorithm to be used at the receiver side of a lossy image transmission system. Our algorithm involves hiding the edge map of the original image at the transmitter within itself using a robust…

Multimedia · Computer Science 2010-04-27 Shabnam Sodagari , Peyman Hesami , Alireza Nasiri Avanaki

With the growth of editing and sharing images through the internet, the importance of protecting the images' authorship has increased. Robust watermarking is a known approach to maintaining copyright protection. Robustness and…

Computer Vision and Pattern Recognition · Computer Science 2022-12-27 Arezoo PariZanganeh , Ghazaleh Ghorbanzadeh , Zahra Nabizadeh ShahreBabak , Nader Karimi , Shadrokh Samavi