Results 21 to 30 of about 696,668 (189)

A novel steganography approach for audio files [PDF]

, 2020
We present a novel robust and secure steganography technique to hide images into audio files aiming at increasing the carrier medium capacity. The audio files are in the standard WAV format, which is based on the LSB algorithm while images are ...
Abdulrazzaq, Sazeen T, Rodrigues, Marcos, Siddeq, Mohammed M   +2 more
core   +1 more source

An Adaptive Non-linear Statistical Salt-and-Pepper Noise Removal Algorithm using Interquartile Range

ELCVIA Electronic Letters on Computer Vision and Image Analysis, 2019
This paper presents a salt-and-pepper noise removal scheme using modified mean filter. The proposed  method  is based on a simple basic concepts of mean filter, where each mean value is calculated from the mathematical formula of interquartile range (IQR)
Amiya Halder
doaj   +1 more source

Blind Estimation of Peak Signal to Noise Ratio for JPEG Highly Compressed Images Based on Correlation [PDF]

Jisuanji gongcheng, 2017
Quantization noise is one of thedominant distortions of JPEG image compression,so its amplitude usually needs to be estimated for image quality assessment.Meanwhile,Peak Signal to Noise Ratio(PSNR) estimation method cannot get the original image in the ...
LU Minjun,WANG Ci
doaj   +1 more source

PSNR Improvement using Different Prediction Coding in Image Compression

Tikrit Journal of Engineering Sciences, 2010
Differential Pulse Code Modulation (DPCM) is one of the predictive coding techniques. The number of previous pixels employed in the estimate operation is referred to as the order of the predictor. Predictor using one pixel for estimation is called “first
Khamies K. Hasan
doaj   +1 more source

Symmetric Cryptography With Shift 2^n-1, Hash Transformation, Optimization-Based Controller for Medical Image Infosecurity: Case Study in Mammographic Image

IEEE Photonics Journal, 2020
Among imaging examinations, mammography noninvasively aids in the early detection and diagnosis of diseases inside the body, such as lung cancer or breast tumor, for first-line examination and helps physicians to treat medical conditions.
Pi-Yun Chen, Jian-Xing Wu, Chien-Ming Li, Chao-Lin Kuo, Neng-Sheng Pai, Chia-Hung Lin   +5 more
doaj   +1 more source

KiDS-450: cosmological constraints from weak lensing peak statistics – I. Inference from analytical prediction of high signal-to-noise ratio convergence peaks [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
This paper is the first of a series of papers constraining cosmological parameters with weak lensing peak statistics using $\sim 450~\rm deg^2$ of imaging data from the Kilo Degree Survey (KiDS-450).
Shan, H., Liu, X., Hildebrandt, H., Pan, C., Martinet, N., Fan, Z., Schneider, P., Asgari, M., Harnois-Déraps, J., Hoekstra, H., Wright, A., Dietrich, J.P., Erben, T., Getman, F., Grado, A., Heymans, C., Klaes, D., Kuijken, K.H., Merten, J., Puddu, E., Radovich, M., Wang, Q.   +21 more
openaire   +5 more sources

Secured Gray-Code-Based Steganographic Technique in Geometrical-Based Domain

IEEE Access, 2023
The past decades witness a tremendous exchange in data and information in almost all domains. This leads to the need for applying data security to ensure information safety during communication.
Aya Y. Alkhamese, Hewayda A. Elgawalby, Ibrahim M. Hanafy, Wael A. Awad, Ahmed Ismail Ebada, S. S. Askar, Mohamed Abouhawwash   +6 more
doaj   +1 more source

Image Compression using Orthogonal Wavelets Viewed from Peak Signal to Noise Ratio and Computation Time [PDF]

International Journal of Computer Applications, 2012
Uncompressed image data requires considerable storage capacity and transmission bandwidth. Despite rapid progress in mass-storage density, processor speeds, and digital communication system performance, demand for data storage capacity and data transmission bandwidth continues to outstrip the capabilities of available technologies.
G. Uma Madhuri, Prabhakar Telagarapu, P. M.K.Prasad   +2 more
openaire   +1 more source

Cellular automata-based approach for salt-and-pepper noise filtration

Journal of King Saud University: Computer and Information Sciences, 2022
Application of cellular automata (CA) to digital image processing has achieved considerable attention in last several years. CA are now employed in noise filtration of digital images; particularly many CA-based impulse noise filters have been proposed ...
Zubair Jeelani, Fasel Qadir
doaj   +1 more source

Adaptive Image Thresholding Based on the Peak Signal-to-noise Ratio

Research Journal of Applied Sciences, Engineering and Technology, 2014
L'objectif de cette recherche est d'améliorer un algorithme de seuillage basé sur le rapport de bruit du signal de crête. Le seuillage est une étape critique dans la reconnaissance des formes et a un effet significatif sur les étapes ultérieures des applications d'imagerie.
Farshid PirahanSiah, Siti Norul Huda Sheikh Abdullah, Shahnorbanun Sahran   +2 more
openaire   +1 more source