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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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ere pi is the probability that symbol si in S will occur.
ENTROPY: Entropy is measure of the disorder of a system.
There are three types of coding methods. Those are
1. run length coding
2. variable length coding
3. 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 dictionary-based coding al..................[:=> 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 ,
highpass filtering and downsampling
u on different level: capture transitions of different frequency bands
u on the same level: capture transitions at different locations
Examples of 1-D Wavelet Transform
2-D Wavelet Transform via Separable Filters
2-D Example
Subband Coding Techniques

 General coding approach
– Allocate different bits for coeff. in different frequency bands
– Encode different bands separately
– Example: DCT-based JPEG and early wavelet coding
 Some difference between subband coding and early wavelet coding ~ Choices of filters
– S..................[:=> Show Contents <=:]


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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l Image Format is not standardized.
currently no public domain documentation available.

..................[:=> 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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for face authentication people are still working with the problem of pose and illu-mination invariance where as fingerprint does not have a good psychological effect on the user because of its wide use in crime investigations. If any biometric modality is to succeed in the future it should have the traits like unique-ness, accuracy, richness, ease of acquisition, reliability and above all user acceptance. Palm print 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 invest..................[:=> 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 i get a clear explanation about the topic . And also could u provide me code for this topic alon..................[:=> 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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A weakness of the quadtree based scheme is that it makes no attempt to select the domain pool in a content-dependent way. The collection must be chosen to be very large so that a good fit to a given range can be obtained. A way to remedy this while increasing the flexibility of the range partition is to use a HV partition.
In an HV partition a rectangular image is recursively partitioned either horizontally or vertically to form two new rectangles,The partitioning repeats recursively until..................[:=> 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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ges and compress each of the three separately using approaches 2,3 or 4. An important feature of this approach is to use luminance chrominance colour representation. The advantage of this representation is that the eye is sensitive to small changes in luminance but not in chrominance. This allows the loss of considerable data in chrominance components while making it possible to decode the image without a significant loss of quality.

This is for discrete tone images. This type of image contain uniform regions and a region may appear several time in the image. A possible way to..................[:=> 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 ..................[:=> Show Contents <=:]

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