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LOSSLESS DATA COMPRESSION ALGORITHMS


Posted by: seminar class
Created at: Tuesday 22nd of March 2011 06:20:01 AM
Last Edited Or Replied at :Thursday 01st of March 2012 12:12:16 AM
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tion/computer network. If the compression and decompression procedure induces no information loss, the compression scheme is lossless; other it is lossy.
Here the data will be compressed by using three coding techniques. They are run-length coding, variable -length coding, fixed-length coding. Run length coding is simplest form of data compression. In the variable-length coding we are using Shannon-fano algorithm and haffman coding algorithm.Shannon-fano algorithm is a top down approach, and the haffman coding algorithm is a bottom up approach.In the fixed-Length coding we are using the dict..................[:=> Show Contents <=:]



Wavelet Based Image Coding


Posted by: seminar class
Created at: Tuesday 22nd of February 2011 11:37:51 PM
Last Edited Or Replied at :Tuesday 22nd of February 2011 11:37:51 PM
wavelet based image compression ppt , wavelet based image compression seminar topic, sub band coding , wavelet coding seminar ppt, seminar topics based on wavelets ,
ox.) non-overlapping freq. response
– Wavelet filters has interpretations in terms of basis and typically designed for certain smoothness constraints
(=> will discuss more )
 Shortcomings of subband coding
– Difficult to determine optimal bit allocation for low bit rate applications
– Not easy to accommodate different bit rates with a single code stream
– Difficult to encode at an exact target rate
Smoothness Conditions on Wavelet Filter
– Ensure the low band coefficients obtained by recursive filtering can provide a smooth approximation of the original signal
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FRACTAL COMPRESSION ppt


Posted by: seminar surveyer
Created at: Thursday 27th of January 2011 12:48:10 AM
Last Edited Or Replied at :Thursday 27th of January 2011 12:48:10 AM
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nclusion
So why isn't everyone using Fractal Image Compression ?
Fractal Image Compression is still under development.
new algorithms to reach shorter encoding time
Fractal Image Format is not standardized.
currently no public domain documentation available.



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Wavelet Based Palmprint Authentication System


Posted by: projectsofme
Created at: Friday 08th of October 2010 11:32:53 PM
Last Edited Or Replied at :Wednesday 13th of June 2012 05:40:17 AM
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int based personal identi-fication is a new biometric modality which is getting wide acceptance and has all the necessary traits to make it a part of our daily life. This paper investigates the use of palm print for personal identification using combination of dif-ferent wavelets. Palmprint not only has the unique informa-tion available as on the fingerprint but has far more amount of details in terms of principal lines, wrinkles and creases. Moreover it can easily be combined with hand shape bio metric so as to form a highly accurate and reliable biometric based personal identification syste..................[:=> Show Contents <=:]



A Digital Watermark Based on The Wavelet Transform and its Robustness on Image


Posted by: project topics
Created at: Sunday 25th of April 2010 11:00:43 PM
Last Edited Or Replied at :Wednesday 19th of December 2012 12:18:05 AM
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embedded zero tree wavelet algorithm...................[:=> Show Contents <=:]



study on huber fractal image compression


Posted by: selvi
Created at: Friday 02nd of April 2010 06:12:10 AM
Last Edited Or Replied at :Friday 02nd of April 2010 06:27:20 AM
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could..................[:=> Show Contents <=:]



fractal image compression seminar report


Posted by: applied electronics
Created at: Tuesday 29th of December 2009 04:18:36 AM
Last Edited Or Replied at :Thursday 16th of February 2012 12:53:20 AM
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parts do not fit together in general to form an exact copy of the original image and so we must allow some amount of error in our representation of an image as a set of self-transformations. This means that an image that we encode as a set of transformations will not be an identical copy but an approximation.
To get a mathematical model of an image we express it as a function z = f(x,y) where z is the grayscale.
METRIC ON IMAGES
If we want to know whether W transformation is contractive we will have t..................[:=> Show Contents <=:]



Data Compression Techniques


Posted by: electrical engineering
Created at: Tuesday 29th of December 2009 02:43:47 AM
Last Edited Or Replied at :Thursday 01st of March 2012 12:11:42 AM
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sed stream and reconstructs the original data by applying the opposite transform. There are several methods for transforming the pixel. Of these the most important one is the direct cosine transform or DCT.
The mathematical concept of a transform is a powerful tool in many areas and can also serve as an approach to image compression. An image can be compressed by transforming its pixels (which are correlated) to a representation where they are decorrelated. Compression is achieved if the new values are smaller, on average, than the original ones. Lossy compression can be achieved by quantiz..................[:=> Show Contents <=:]



Video Image Compression Techniques


Posted by: vissu_52
Created at: Monday 21st of December 2009 03:01:11 AM
Last Edited Or Replied at :Friday 24th of February 2012 11:35:37 PM
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I want the report on ..................[:=> Show Contents <=:]



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