Results 11 to 20 of about 548,380 (268)

A novel image compression technology based on vector quantisation and linear regression prediction

open access: yesConnection Science, 2021
In the information age, a digital image is an important media for people’s daily interactions. Looking to maintain the quality of the restored image, how to maximise the compression of images has become a challenging topic.
Shuying Xu, Chin-Chen Chang, Yanjun Liu
doaj   +1 more source

Optimal Compression of Floating-point Astronomical Images Without Significant Loss of Information [PDF]

open access: yes, 2010
We describe a compression method for floating-point astronomical images that gives compression ratios of 6 -- 10 while still preserving the scientifically important information in the image. The pixel values are first preprocessed by quantizing them into
Pence, W. D., Seaman, R., White, R. L.
core   +3 more sources

Lossy Image Compression Using PCA and Contourlet Transform

open access: yesMATEC Web of Conferences, 2016
With the rapid development of Internet, image information is growing. It requires a lot of image storage and transmission. In order to reduce the storage and get better image quality, image compression algorithm is studied. The paper proposes a new image
Chen Yaxiong   +4 more
doaj   +1 more source

An End-to-End Deep Learning Image Compression Framework Based on Semantic Analysis

open access: yesApplied Sciences, 2019
Lossy image compression can reduce the bandwidth required for image transmission in a network and the storage space of a device, which is of great value in improving network efficiency.
Cheng Wang, Yifei Han, Weidong Wang
doaj   +1 more source

Research on fractal image compression hybrid algorithm based on convolutional neural network and gene expression programming

open access: yesJournal of Algorithms & Computational Technology, 2019
Regarding the problems of insufficient image segmentation intelligence, low compression rate, slow speed for global searching to find the optimal fractal image compression encoding, and bad decoding effect, this article proposes the fractal image ...
Wenjing Li   +3 more
doaj   +1 more source

SWF Image Compression by Evaluating objects compression ratio

open access: yesJournal of Kufa for Mathematics and Computer, 2010
This work discusses the compression objects ratio for Macromedia Flash File (SWF) Image by Wavelet functions for compression and there effect for Macromedia Flash File (SWF) Images compression .
Hind Rostom Mohammed, Ameer Abd Al-Razaq
doaj   +1 more source

Image data compression [PDF]

open access: yesJournal of Digital Imaging, 1997
The tutorial will expand on all of the topics outlined above and will provide additional information on other compression techniques. The practical implications of data compression and the important considerations in choosing a compression scheme will also be discussed.
openaire   +3 more sources

Digital Image Compression using Karhunen-Loève Transform [PDF]

open access: yesAl-Rafidain Journal of Computer Sciences and Mathematics, 2013
In this research present the digital image compression using by  Karhunen-Loève Transform (KLT), by convert a color digital  image to a gray square digital image, then select the no. of eigen values and eigen vectors that can reconstruct the image,  that
Ghada Younes
doaj   +1 more source

Three-Dimensional Adaptive Image Compression Concept for Medical Imaging: Application to Computed Tomography Angiography for Peripheral Arteries

open access: yesJournal of Cardiovascular Development and Disease, 2022
Advances in computed tomography (CT) have resulted in a substantial increase in the size of datasets. We built a new concept of medical image compression that provides the best compromise between compression rate and image quality. The method is based on
Guillaume Fahrni   +4 more
doaj   +1 more source

Hardware architecture for lossless image compression based on context-based modeling and arithmetic coding [PDF]

open access: yes, 2007
In this paper we present a novel hardware architecture for context-based statistical lossless image compression, as part of a dynamically reconfigurable architecture for universal lossless compression.
Canagarajah, CN   +3 more
core   +2 more sources

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