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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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reat idea requires too many bits. In fact there exist many coding techniques that will effectively reduce the total number of bits needed to represent the above information. In this lossless data compression algorithms we perform that compression of the data, and also it involves that no distortion of the original signal once it is decompressed or reconstituted. So much data will exist, in archives and elsewhere, that it has become critical to compress this information. Lossless compression is one way to proceed.
Generally compression in th..................[:=> 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 ,
. 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
Embedded Zero-Tree Wavelet Coding..................[:=> 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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ntage 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 dimension =1
A plane has dimension =2
Objects live in spaces.
Dimension of a space is related with degrees of freedom of the space.

Dimension of natural objects
Dimension of a leaf.

Dimension of a fern.

Dimension of a cloud.

fractals..................[:=> 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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d 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 system. Palmprint based personal verification has become an in-creasingly active research topic over t..................[:=> 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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ing the attentions a new method of protecting copyrights for digital data. In this paper, we present two methods of digital watermark for image signals based on the wavelet transform. We classify wavelet coefficients as insignificant or significant by using zero tree whi..................[:=> 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 p..................[:=> 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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perties.
1. The attractor is called the fixed point of W
2. Xw is unique. If we find any set S and an image transformation w satisfying W(s) =S, then S is the attractor of W.
SELF SIMILARITY IN IMAGES
Natural images are not self-similar. A typical image of a face does not contain the type of self similarity found in the fractals. The image does not appear to contain affine transformations of itself. But this image contains a different type of self-similarity. Here the image is formed of properly transformed parts ..................[:=> 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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he weights wij. The guiding principle is that we want the first transformed value c1 to be large, and the remaining values c2, c3, ¦. To be small. The basic relation ci = j djwij suggests that ci will be large when each weight wij reinforces the corresponding data item dj. This happens, for example, when the vectors wij and dj have similar values and signs. Conversely, ci will be small if all the weights wij are small and half of them have the opposite sign of dj. Thus, when we get a large ci we know that the basis vector wij resembles the data vector dj. A small ci, on the other hand, mea..................[:=> 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 Technique..................[:=> Show Contents <=:]



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