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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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G-2000, which has been based upon DWT CHAPTER-I
INTRODUCTION
1.1Discrete Cosine Transform
1.1.1 DISCRIPTION

Compressing an image is significantly different than compressing raw binary data. Of course,
general purpose compression programs can be used to compress images, but the result is less than optimal. DCT has been widely used in signal processing of image. The one-dimensional DCT is useful in processing one-dimensional signals such as speech waveforms. For analysis of tw..................[:=> Show Contents <=:]



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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in problem is that this “great 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.
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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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ing
Overview and Logistics
 Last Time:
– Transform coding
 Today:
– JPEG compression standard: Baseline block-DCT based algorithm
u lossy part: quantization with different step size for each coeff. Band
u lossless part: differential coding, run-length coding, Huffman
=> Continued with the class notes handed out in last lecture
– Subband and Wavelet based compression
u Exploiting the structures between coefficients for removing redundancy
Wavelet Transform for Image Compression
 ENEE631 emphasis
– Focus on conceptual aspects related to image compr..................[:=> 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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ios, and Fractal Compression is better at high.
Crossover point at 40:1
The fractal compressed images have a much more natural looking noise than JPEG.
Same decompression time as JPEG, sometimes faster.
Fractal compression much slower compression time than JPEG.
Can zoom on the fractal image and the image will stillhave a natural look -> higher effective compression ratios.

Possible Improvments
Greatest weakness is time for encoding
Possible speed ups
Order transform blocks into domains based off of average intensity and variance
Only search through blocks with similar str..................[:=> 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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to form a highly accurate and reliable biometric based personal identification s..................[:=> 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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ignificant by using zero tree which 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 ..................[:=> 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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able technique.

ACKNOWLEDGEMENT
I express my sincere gratitude to Dr.Nambissan, Prof. & Head, Department of Electrical and Electronics Engineering, MES College of Engineering, Kuttippuram, for his cooperation and encouragement.
I would also like to thank my seminars guide and Staff in-charge
Asst. Prof. Gylson Thomas. (Department of EEE) for his invaluable advice and wholehearted cooperation without which this seminars would not have seen the light of day.
Gracious gratitude to all the faculty of the department of EEE & friends for their valuable advice and encouragement.

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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 ..................[:=> Show Contents <=:]



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