i want to code project in java for file compression..
i want to file compression project in java code ....etc

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Myself gauri prabhu, i want to know about the DFD of compression of file and compression of image. i would appreciate your help.
thank you :) ....etc

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huffman algorithm and adaptive huffman algorithm binary image using matlab

Consider a black and white image. This image is made up of many pixels that are all different shades of gray which have a number value corresponding to the brightness or darkness of the shade. Black is 0, white is 255, and all the numbers in between are shades of gray. So, each pixel is coded as some integer from 0 to 255. In order to encode these integers, we must use bits. A bit have a value of either 0 or 1, and the maximum number of bits needed to code any number be ....etc

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The objective of image compression is to reduce irrelevance and redundancy of the image data in order to be able to store or transmit data in an efficient form.

Image compression may be lossy or lossless. Lossless compression is preferred for archival purposes and often for medical imaging, technical drawings, clip art, or comics. Lossy compression methods, especially when used at low bit rates, introduce compression artifacts. Lossy methods are especially suitable for natural images such as photographs in applications where minor (sometimes i ....etc

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yes,,i want source compressor using huffman source code in java.

plz,,help ....etc

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Abstract

Huffman coding can be used to compress all sorts of data. It is an entropy-based algorithm that relies on an analysis of the frequency of symbols in an array. Huffman coding can be demonstrated most vividly by compressing a raster image. Suppose we have a 5 5 raster image with 8-bit color, i.e. 256 different colors. The uncompressed image will take 5 x 5 x 8 = 200 bits of storage. This compression technique is used broadly to encode music, images, and certain communication protocols. Lossless JPEG compression uses the Huffman algorit ....etc

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could you please send me the power point presentationfor the file compression sunzip i'm unable to find could you pls mail me that document to my mail id [email protected] ....etc

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DATA COMPRESSION
Virtually all forms of data - text, numerical, image, video contain redundant elements
Data can be compressed by eliminating the redundant elements.
A code is substituted for the eliminated redundant element, where the code is shorter than eliminated element.
When compressed data is retrieved from storage or received over a communications link, it is expanded back to its original form, based on the code.
Compression is used:
to save storage space
to reduce communications transmission requiremen ....etc

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Data Compression Using Dynamic Huffman Coding ....etc

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give me difference between static huffman coding and dynamic huffman coding. ....etc

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