نتایج جستجو برای: bandwidth compression
تعداد نتایج: 142223 فیلتر نتایج به سال:
This document deals with the issues of video compression. The algorithm, which is used by the MPEG standards, will be elucidated upon in order to explain video compression. Only visual compression will be discussed (no audio compression). References and links to further readings will be provided in the text. What is compression? Compression is a reversible conversion (encoding) of data that con...
For admission control in real time multimedia systems, buuer space, disk bandwidth and network bandwidth must be considered. Most admission control mechanisms developed to date have been based on the CBR data model and have used a static period length. These mechanisms do not use system resources eeectively, since media data is usually encoded with VBR compression techniques. We propose an admi...
Motivated by recent work on deep neural network (DNN)-based image compression methods showing potential improvements in image quality, savings in storage, and bandwidth reduction, we propose to perform image understanding tasks such as classification and segmentation directly on the compression representations produced by these compression methods. Since the encoders and decoders in DNN-based c...
XML data compression is an important feature in XML data exchange, particularly when the data size may cause bottlenecks or when bandwidth and energy consumption limitations require reducing the amount of the exchanged XML data. However, applications based on XML data streams also require efficient path query processing on the structure of compressed XML data streams. We present a succinct repr...
The Earth Science Data and Information System (ESDIS) handles over one terabyte (10 12 bytes) of data daily and is using the Hierarchical Data Format (HDF) for data archiving and distribution. This report provides the progress and status of our effort to alleviate bandwidth and storage burdens by first performing compression studies on various science data products and later integrating the sel...
For admission control in real time multimedia systems, buuer space, disk bandwidth and network bandwidth must be considered. The CBR based mechanisms do not use system resources eeectively, since media data is usually encoded with VBR compression techniques. We propose an admission control mechanism based on a VBR data model, that has a dynamic period length. In our mechanism the period can be ...
Medical diagnostic data produced by hospitals has increased exponentially. With the coming era of digitized medical information and film-less imaging, it has been a challenge to deal with the storage and transmission requirement of enormous data. Compression is one of the indispensable techniques to solve this problem; with this the wavelet-based approaches have been the mainstream in the signa...
We shed light on the accuracy of particle trajectories in turbulent vector fields when lossy data compression is used. So far, data compression has been considered rather hesitantly due to supposed accuracy issues. Motivated by the observation that particle traces are always afflicted with inaccuracy, we quantitatively analyze the additional inaccuracies caused by lossy compression. In some exp...
Advance medical imaging requires storage of large quantities of digitized clinical data. Due to the bandwidth and storage limitations, medical images must be compressed before transmission and storage. Diagnosis is effective only when compression techniques preserve all the relevant and important image information needed. There are basically two types of image compression: lossless and lossy. L...
Image Compression generally refers to reducing the size of an image for the purpose of minimizing storage space as well as reducing the transfer time when transmitted over the network. Compression is very useful in medical imaging as a large quantity of storage is needed for storing medical images which can further be delivered for diagnosis. An appropriate technique for compression is needed f...
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