Results 11 to 20 of about 12,005,993 (173)

Efficient reconfigurable architectures for 3D medical image compression [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Recently, the more widespread use of three-dimensional (3-D) imaging modalities, such as magnetic resonance imaging (MRI), computed tomography (CT ...
Afandi, Ahmad
core   +7 more sources

An efficient error resilience scheme based on wyner-ziv coding for region-of-Interest protection of wavelet based video transmission [PDF]

open access: yes, 2008
In this paper, we propose a bandwidth efficient error resilience scheme for wavelet based video transmission over wireless channel by introducing an additional Wyner-Ziv (WZ) stream to protect region of interest (ROI) in a frame.
Zhuo, X, Loo, KK, Cosmas, J, Yip, PY
core   +7 more sources

Space-variant picture coding [PDF]

open access: yes, 2010
PhDSpace-variant picture coding techniques exploit the strong spatial non-uniformity of the human visual system in order to increase coding efficiency in terms of perceived quality per bit.
Popkin, Timothy John
core   +4 more sources

Improved JPEG Coding by Filtering 8 × 8 DCT Blocks

open access: yesJournal of Imaging, 2021
The JPEG format, consisting of a set of image compression techniques, is one of the most commonly used image coding standards for both lossy and lossless image encoding.
Yasir Iqbal, Oh-Jin Kwon
doaj   +1 more source

JPEG2000 Compatible Lossless Coding of Floating-Point Data

open access: yesEURASIP Journal on Image and Video Processing, 2007
Many scientific applications require that image data be stored in floating-point format due to the large dynamic range of the data. These applications pose a problem if the data needs to be compressed since modern image compression standards, such as ...
Bryan E. Usevitch
doaj   +2 more sources

IMPROVING EFFICIENCY IN IMAGE ENCRYPTION AND COMPRESSION USING PERMUTATIONS & PREDICTIONS

open access: yesICTACT Journal on Image and Video Processing, 2017
Due to rapid growth in image sizes, an alternate of numerically lossless coding named visually lossless coding is considered to reduce storage size and lower data transmission.
S Shunmugan, P Arockia Jansi Rani
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.
Vitulli, Raffaele   +3 more
core   +1 more source

Onboard Image Processing System for Hyperspectral Sensor

open access: yesSensors, 2015
Onboard image processing systems for a hyperspectral sensor have been developed in order to maximize image data transmission efficiency for large volume and high speed data downlink capacity.
Hiroki Hihara   +10 more
doaj   +1 more source

ROI coding of volumetric medical images with application to visualisation [PDF]

open access: yes, 2003
This paper presents region of interest (ROI) coding of volumetric medical images with the region itself being three dimensional. An extension to 3D-SPIHT which allows 3D ROI coding is proposed.
Agrafiotis, D, Canagarajah, CN, Bull, DR
core   +1 more source

A contrast-sensitive reversible visible image watermarking technique [PDF]

open access: yes, 2009
A reversible (also called lossless, distortion-free, or invertible) visible watermarking scheme is proposed to satisfy the applications, in which the visible watermark is expected to combat copyright piracy but can be removed to losslessly recover the ...
Xiao, R. (Rong)   +4 more
core   +1 more source

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