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ashasabeer
Posts: 55
Posted 18:55 Apr 23, 2011 |

I am confused on compression ration.Please help me .

As per Lec-05-Lossless1.pdf  

Compression ratio = R/C

–R = the total number of bits required to represent data before compression

–C = the total number of bits required to represent data after compression

 

So this will be greater than 1. but most of the output is less than 1 .Please help me

 

 

cbort
Posts: 95
Posted 19:03 Apr 23, 2011 |

Oh I was going off of Wiki and the first poster... I guess I am wrong the book and her lecture have it as

R/C

Redalb
Posts: 22
Posted 12:58 Apr 24, 2011 |

C/R and R/C are both correct. The only difference is if you use C/R it means you have a (1:C/R) ratio and R/C means you have (R/C:1) ratio. (Original:Compressed)

http://en.wikipedia.org/wiki/Data_compression_ratio

Last edited by Redalb at 15:26 Apr 24, 2011.