Results 51 to 60 of about 244 (177)

Principle of compression images based on discrete wavelet transform

open access: yesНаука. Инновации. Технологии, 2022
In the article the basic principles of image compression using discrete wavelet transform is presented. Promising imaging techniques EZW and SPIHT, based on zero-tree algorithm are shown.
Nikolai Ivanovich Chervyakov   +3 more
doaj  

Using Modified Set Partitioning In Hierarchical Tree Algorithm with Discreet Cosine Transform to Compress Color Images [PDF]

open access: yesEngineering and Technology Journal, 2010
The aim of this research is to investigate the performance of a suggestedimage compression system. The scheme of the proposed system utilizes Tap 9/7wavelet transforms to decompose the image signal, and then uses Discrete CosineTransform (DCT), and ...
Ban Nadeem Dhannoon   +1 more
doaj   +1 more source

Video Coding Using 3D Dual-Tree Wavelet Transform

open access: yesEURASIP Journal on Image and Video Processing, 2007
This work investigates the use of the 3D dual-tree discrete wavelet transform (DDWT) for video coding. The 3D DDWT is an attractive video representation because it isolates image patterns with different spatial orientations and motion directions and ...
Beibei Wang   +3 more
doaj   +2 more sources

Error Concealment using Data Hiding in Wireless Image Transmission

open access: yesTelfor Journal, 2016
The transmission of image/video over unreliable medium like wireless networks generally results in receiving a damaged image/video. In this paper, a novel image error concealment scheme based on the idea of data hiding and Set Partitioning In ...
A. Akbari   +3 more
doaj   +1 more source

An Improved Image Compression Technique Using EZW and SPHIT Algorithms

open access: yesIbn Al-Haitham Journal for Pure and Applied Sciences, 2019
 Uncompressed form of the digital images are needed a very large storage capacity amount, as a consequence requires large communication bandwidth for data transmission over the network.
Aqeel K. Kadhim   +2 more
doaj   +1 more source

Improving quality of medical image compression using biorthogonal CDF wavelet based on lifting scheme and SPIHT coding [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2011
As the coming era is that of digitized medical information, an important challenge to deal with is the storage and transmission requirements of enormous data, including medical images.
Beladgham Mohammed   +3 more
doaj   +1 more source

فشرده‌سازی سیگنال‌های الکترومایوگرام مبتنی بر تقریب به کمک تجزیه حالت تجربی و هموارسازی به کمک تبدیل DCT [PDF]

open access: yesپردازش سیگنال پیشرفته, 2019
سیگنال‌های الکترومایوگرام (EMG) ابزار مفیدی در ارزیابی رفتار ماهیچه بوده و کاربردهای کلینیکی بسیاری دارند. امروزه تمایل زیادی به انتقال و ذخیره طولانی‌مدت این سیگنال‌ها وجود دارد. این مطلب اهمیت ذخیره‌سازی مؤثر این سیگنال‌ها را نشان می‌دهد.
مریم مگری, هادی گرایلو
doaj  

Comparative Performance Evaluation of Three Image Compression Algorithms

open access: yesJournal of Applied Science & Process Engineering, 2017
The advent of computer and internet has brought about massive change to the ways images are being managed. This revolution has resulted in changes in image processing and management as well as the huge space requirement for images’ uploading, downloading,
Jide Julius Popoola   +1 more
doaj   +1 more source

MEDICAL IMAGE COMPRESSION USING HYBRID CODER WITH FUZZY EDGE DETECTION [PDF]

open access: yesICTACT Journal on Image and Video Processing, 2011
Medical imaging techniques produce prohibitive amounts of digitized clinical data. Compression of medical images is a must due to large memory space required for transmission and storage.
K. Vidhya, S. Shenbagadevi
doaj  

Classified Vector Spiht Forwavelet Image Coding

open access: yes2006 International Conference on Image Processing, 2006
Wavelet based image coding has been shown to be an effective method, especially at low bit rate. Two successful approaches, space-frequency quantization (SFQ) and set partitioning in hierarchical trees (SPIHT) were proposed to predict insignificant wavelet coefficients.
YongQing Liang 0003, Scott E. Budge
openaire   +2 more sources

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