Wavelet Video Processing Technology
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computer science crazy
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#1
21-09-2008, 10:18 AM


Introduction

Uncompressed multimedia data requires considerable storage capacity and transmission bandwidth. Despite rapid progress in mass storage density processor speeds and digital communication system performance, demand for data storage capacity and data transmission bandwidth continues to outstrip the capabilities of available technologies. The recent growth of data intensive multimedia-based web applications have not only sustained the need for more efficient ways to encode signals and images but have made compression of such signals central to storage and communication technology.

For still image compression, the joint photographic experts group (JPEG) standard has been established. The performance of these codes generally degrades at low bit rates mainly because of the underlying block-based Discrete cosine Transform (DCT) scheme. More recently, the wavelet transform has emerged as a cutting edge technology, within the field of image compression. Wavelet based coding provides substantial improvements in picture quality at higher compression ratios. Over the past few years, a variety of powerful and sophisticated wavelet based schemes for image compression have been developed and implemented. Because of the many advantages, the top contenders in JPEG-2000 standard are all wavelet based compression algorithms.

Image Compression

Image compression is a technique for processing images. It is the compressor of graphics for storage or transmission. Compressing an image is significantly different than compressing saw binary data. Some general purpose compression programs can be used to compress images, but the result is less than optimal. This is because images have certain statistical properties which can be exploited by encoders specifically designed for them. Also some finer details in the image can be sacrificed for saving storage space.

Compression is basically of two types.
1. Lossy Compression
2. Lossless Compression.

Lossy compression of data concedes a certain loss of accuracy in exchange for greatly increased compression. An image reconstructed following lossy compression contains degradation relative to the original. Often this is because the compression scheme completely discards redundant information. Under normal viewing conditions no visible is loss is perceived. It proves effective when applied to graphics images and digitized voice.
Lossless compression consists of those techniques guaranteed to generate an exact duplicate of the input data stream after a compress or expand cycle. Here the reconstructed image after compression is numerically identical to the original image. Lossless compression can only achieve a modest amount of compression. This is the type of compression used when storing data base records, spread sheets or word processing files.
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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kannvijay
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#2
29-05-2010, 03:36 PM

hai I need this , urgent,pls help..
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Sidewinder
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#3
30-05-2010, 03:10 PM

Hi,
visit this thread for full report on this topic:
topicideashow-to-wavelet-video-processing-technolog-full-report
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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anoopmathew007
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#4
10-08-2010, 12:31 AM

please snd this topic immediately.....
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sagar wattamwar
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#5
19-08-2010, 08:03 PM

plese send me seminar and presentation on wavelet video processing
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seminar flower
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#6
27-06-2012, 04:09 PM

Wavelet Video-Processing Technology


.docx   Wavelet Video-Processing.docx (Size: 13.76 KB / Downloads: 22)
Wavelet processing allows saving the real-time images in a minimal amount of hard-disk space. Postprocessing of the images for archival purposes even further reduces hard-disk requirements. Offer higher compression ratios and higher resolution than conventional JPEG or MPEG techniques.
Wavelet image compression involves a set of filters that consist of a low-frequency filter and a high-frequency filter that are orthogonal to each other. The purpose of the technique is to discard the least significant coefficients (from a visual-
perception standpoint) of the wavelet-filtered signals. An inverse wavelet transform reconstructs the original signal using the available coefficients. The more coefficients the technique discards, the higher the compression ratio but also the greater degradation of the reconstructed image. However, an intelligent choice of the discarded coefficients
makes the degradation imperceptible to a point and graceful beyond that point.


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#7
29-07-2012, 06:40 PM

sir plz give topics for project and implimentation in digital image processing along with details which includes codes mathematical expression etc at singhvarunrock@gmail.com plz sir we would be highly thankful to you
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#8
30-07-2012, 10:36 AM

To get more information about the topic " wavelet video processing technology" please refer the link below


topicideashow-to-wavelet-video-processing-technology

topicideashow-to-wavelet-video-processing-technolog-full-report

topicideashow-to-wavelet-video-processing-technology?pid=17396
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#9
06-09-2012, 01:34 PM

hi sir ,
i am ushakiran.could u plz send me documentation & ppt for wavelet video processing technology its really urgent sir plzzzzzzzzzzzzz
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