Results 21 to 30 of about 88 (69)

Computing Multivalued Mathematical Morphology on Multiband Images Using Algorithms for Multicriteria Analysis

Image Analysis and Stereology
Mathematical morphology (MM) is a powerful tool for spatial multispectral and hyperspectral image analyses. However, MM was originally developed for single-band images in which each pixel is represented by a numerical value.
Samir L'haddad, Akila Kemmouche, Aude Nuscia Taïbi   +2 more
doaj   +1 more source

AN EFFECTIVE REVERSIBLE DATA HIDING METHOD BASED ON PIXEL-VALUE-ORDERING

Journal of Computer Science and Cybernetics, 2020
This paper presents a new effective reversible data hiding method based on pixel-value-ordering (iGePVO-K) which is improvement of a recent GePVO-K method that recently is considered as a PVO-used method having highest embedding capacity. In comparison with GePVO-K method, iGePVO-K has the following advantages.
Nguyen Kim Sao, Nguyen Ngoc Hoa, Pham Van At   +2 more
openaire   +2 more sources

FPGA Design of Image Defogging System in Intelligent Tachograph

Shanghai Jiaotong Daxue xuebao
In hazy weather, due to the low visibility of traffic roads, the video images collected are degraded and the image information is fuzzy. Considering the problem of low real-time processing of the traditional system, an image defogging system based on the
HUANG He, HU Kaiyi, YANG Lan, WANG Hao, GAO Tao, WANG Huifeng
doaj   +1 more source

A hybrid steganography scheme with reduced difference expansion and pixel-value ordering

IAES International Journal of Artificial Intelligence (IJ-AI)
<p><span lang="EN-US">Steganography embeds secret messages into public media while ensuring the stego content remains visually indistinguishable from the original. The primary challenge lies in maximizing embedding capacity and image quality without introducing noticeable distortions.
Putra, I Kadek Agus Ariesta, Jean De La Croix, Ntivuguruzwa, Ahmad, Tohari   +2 more
openaire   +1 more source

An adaptive pixel value ordering based reversiblewatermarking scheme for image authentication

, 2018
Protecting information within communication systems is quite important since a digital content may be manipulated by unauthorized people during transmission. Image watermarking is a hiding information technique that has been thoroughly investigated by the cybersecurity community in recent years. A traditional watermarking scheme permanently distorts an
openaire   +1 more source

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Pixel-based pixel value ordering predictor for high-fidelity reversible data hiding

Signal Processing, 2015
A pixel-value-ordering (PVO) predictor has been used in reversible data hiding methods to produce high-fidelity marked images when the payload size is moderate. The original PVO generates predictions in a block-by-block manner where only two pixels can be predicted in each block. In this paper, a novel pixel-based PVO (PPVO) is proposed with which each
Hyoung Joong Kim, Xiaochao Qu
exaly   +2 more sources

An Insight into Pixel Value Ordering Prediction Based Prediction-error Expansion

IEEE Transactions on Information Forensics and Security, 2020
As the core of prediction-error expansion technique, prediction method has a fundamental impact on performance of reversible data hiding. Pixel value ordering (PVO) prediction has been extensively investigated for its high accuracy. However, the correlation of pixels within block has not been fully exploited yet.
Zhanchuan Cai, Wenguang He
exaly   +2 more sources

Hybrid prediction-based pixel-value-ordering method for reversible data hiding

Journal of Visual Communication and Image Representation, 2021
Abstract Pixel-value-ordering (PVO) is an effective and promising method of reversible data hiding (RDH) and has received much attention in recent years. To improve performance, a pixel-based PVO (PPVO) method was recently introduced to predict the pixels to be embedded in a pixel-wise manner instead of the block-wise manner used by PVO. However, for
Guopu Zhu, Xiaolong Li
exaly   +2 more sources

A novel reversible image data hiding scheme based on pixel value ordering and dynamic pixel block partition

Information Sciences, 2015
Recently, various efficient reversible data-hiding schemes based on pixel value ordering have been proposed for embedding messages into high-fidelity images. In these schemes, after dividing the cover image into equal-sized blocks, the pixels within a given block are ordered according to their values, and data embedding is achieved by modifying the ...
Xiang Wang, Qingqi Pei
exaly   +2 more sources