S. Amarasinghe "Comparison of lossless data compression algorithms For text data" Indian Journal of Computer Science and Engineering Vol 1 No 4 416-425S.R. Kodituwakku and U. S.Amarasinghe, 2010, Comparison of Lossless Data Compression Algorithms for Text Data, Indian Journal of Computer ...
The overall algorithm for the BWT transformation is quite simple. First, the algorithm takes a string as input. Next, we create all possible rotations of the string. Then, we sort them lexicographically. Finally, we get the last column of the sorted rotations, which is the BWT of the origi...
Text compression essentially reduces the file size/payload of text-based resources, decreasing the amount of data transferred. A compressed text-based resource is delivered to your browser faster. There are 3 types of compression algorithms recognized by GTmetrix, namely: Gzip Brotli Deflate Brot...
We develop data structures and compression algorithms for HTS data. A processing stage maps short sequences to a reference genome or a large table of sequences. Then the integers representing the short sequence absolute or relative addresses, their length, and the substitutions they may contain are...
This section describes some internal implementation details about compression for InnoDB tables. The information presented here may be helpful in tuning for performance, but is not necessary to know for basic use of compression. 2.1 Compression Algorithms ...
For instance, an HDR still image may occupy 4 times the space needed by an LDR version of the same image [1]. This, as a consequence, demands for effective compression algorithms for HDR content. Note that compression of LDR images/videos has been an active research area in any case and...
Lossless compression algorithms usually exploit statistical redundancy in such a way as to represent the sender's data more concisely without error. Lossless compression is possible because most real-world data possess statistical redundancy. For example, in English text, the letter “e” is much mor...
In some cases, you can open the PDF using a text editor that can handle binary data (TextPad, UltraEdit,…) and search for the “/Filter” keywords. The use of compression algorithms in PDF files CCITT compression CCITT compression can be used for black-and-white images. It is the same...
(1 bit per pixel) image data from 20:1 to 50:1 for pages full of text. Like other dictionary-based algorithms (LZW, ZIP) JBIG2 creates a table of unique symbols and when a subsequent symbol matches one in the table, it substitutes a token pointing to the table index. JBIG2 also ...
UML collaboration diagram for the data compressor. Application Example 3.5 Huffman Coding for Text Compression Text compression algorithms aim at statistical reductions in the volume of data. One commonly used compression algorithm is Huffman coding [Huf52], which makes use of information on the ...