The human eye doesn’t respond with equal sensitivity to all visual information. it refers to the Brief Idea About Psychovisual Redundancy.
It is more sensitive to the lower frequency than the higher frequency in the visual spectrum.
Elimination of Psychovisual Redundancy resolves the loss of quantities of information during image formations. T h refers to Quantitation.
The Psychovisual redundancy resolves lossy data compression .
Types of compression Algorithm
Compression algorithm are normally devided into two basic type
The Origianl Image can be excatly recover from the compressed image
The Compression ratio is usually less Cr = n1/n2 <1
It is arequired in the domains where reliability is very crusial
viz. Executable Files
Some of the popular lossless algorithm are given below
The recovery of the oroginal image may ot be possible in lossy compression
Here the compression is very high i.e. Cr = n1/n2 > 1
It is useful in the domain when loss of data is acceptable
There are Some of the popular lossless algorithm are as follows