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IMAGE COMPRESSION USING DISCRETE COSINE TRANSFORM


Posted by: seminar class
Created at: Tuesday 19th of April 2011 11:29:28 PM
Last Edited Or Replied at :Monday 07th of November 2011 10:31:55 PM
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ly the
inverse DCT or the IDCT. Two related transforms are the discrete sine transform (DST), which is equivalent to a DFT of real and odd functions, and the modified discrete cosine transform (MDCT), which is based on a DCT of overlapping data.
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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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PY: Entropy is measure of the disorder of a system.
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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
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t 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
Embedded Zero-Tree Wavelet Coding (EZW)
 Modern” lossy wavelet coding exploits multi-resolution and self-similar nature of wavelet decomposition
– Energy is compacted into a small number of coeff.
– Significant coeff. tend to cluster at the same spatial location in each frequency subband
 Two set of info. to code:
– Where are the significant coefficients?
– Wha..................[:=> Show Contents <=:]



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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mpression rate.

Overview
Why Fractal Image Compression

Fractals

Mathematical Background

How does it work?

Examples

Possible Improvements

Why fractal compression
Different type of compression scheme worth exploring
Takes advantage of similarities within an image
Advanced detail interpolation
High theoretical compression rates
Fast decompression times

fractals
Term coined by Mandelbrot.
Natural objects - fractals include clouds, mountain ranges, cauliflower.

Mandelbrot set---

dimension
A point has dimension=0
A line has ..................[:=> Show Contents <=:]



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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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 system. Palmprint based personal verification has become an in-creasingly active research topic over the years. The Palm-print is rich in inf..................[:=> 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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hich is defined in the 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 i get a clear explanation about the topic . And also could u provide me code for this topic along with explanation

Thanks in adva..................[:=> 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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ny magnification with infinite levels of fractal detail. Genetic algorithms in MATLAB are generally used for the efficient encoding of fractals.
FUTURE DEVELOPMENTS
Several new schemes of image compression are being developed day-by-day. The most notable of these is the fractal scheme. It provides endless scope and is under research. Further new partitioning schemes are also being developed. Another recent advance in this field has been through wavelet transformations. This is a highly efficient method based on the Fourier..................[:=> 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 Video Image Compression Techn..................[:=> Show Contents <=:]



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