Results 21 to 30 of about 697,042 (219)

Cross-layer optimization technology for wireless network multimedia video [PDF]

open access: yesКомпьютерная оптика, 2020
With the development of communication technology, wireless Internet has become more and more popular. The traditional network layered protocols cannot meet the increasingly rich network services, especially video.
W. Xia
doaj   +1 more source

Hybrid Algorithm to Improve Robustness of Image Watermarking [PDF]

open access: yesEngineering and Technology Journal, 2015
Watermarking is the process of embedding digital information into any multimedia data such as an image, audio or video file in such a way that intruder cannot be able to trace the signal to protect copyright of intellectual property of the owners.
Ammar Fakhri Mahdi
doaj   +1 more source

A novel steganography approach for audio files [PDF]

open access: yes, 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   +2 more
core   +1 more source

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

open access: yesELCVIA 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

PSNR Improvement using Different Prediction Coding in Image Compression

open access: yesTikrit 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

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

open access: yesJournal 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

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

open access: yesIEEE 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   +5 more
doaj   +1 more source

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

open access: yesIEEE 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   +6 more
doaj   +1 more source

Image matching using peak signal-to-noise ratio-based occlusion detection

open access: yesIET Image Processing, 2012
A new identification mechanism is introduced for the purpose of locating objects partially occluded under low peak signal-to-noise ratio (PSNR) environment in two-dimensional grey scale image.The proposed occlusion detection is based on the utilisation of the fact that the higher the PSNR, the less the impairment of the image.
J.-C. Yoo, C.W. Ahn
openaire   +1 more source

The relationship between acceptable noise level and electrophysiologic auditory brainstem and cortical signal to noise ratios

open access: yesAudiology Research, 2014
The following objectives of the study were formulated: i) to investigate differences in measured signal to noise ratios while recording speech-evoked auditory brainstem response (cABR) and cortical late latency response (LLR) in low and high acceptable ...
Hemanth N. Shetty   +2 more
doaj   +1 more source

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