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CompressionProgram

Independent Study - USF Spring 2020

This program implements a few compression algorithms in C++. These algorithms can take in arbitrary data and attempt to compress the file size. The user can choose an algorithm and file to compress/decompress through the program.

Currently implemented compression algorithms:

Lempel-Ziv: Currently compresses arbitrary data.

Huffman Code: Currently compresses text files.

RLE: Currently compresses arbitrary data, though RLE will not often shrink a file size without other modifications prior. For example, a text file of a Shakespeare excerpt would not have many patterns. ^This is planned to change by avoiding putting a '1' in front of single characters.

Quanitzation: BMP images can now be quantized.

Currently implemented transformations:

BWT: Burrows–Wheeler Transformation of data, works in conjunction with RLE.

Currently implemented encryption algorithms:

RSA encryption

Vigenere Cypher

To Do:

  1. RLE on BWT data.
  2. Multiple character Huffman encoding (maybe to be combined with BWT).
  3. RLE keeps single chars as is, only encodes necessary sequential characters.

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