JPEG compression

A program in order to see how the JPEG method works.

Description

Look at the effects of JPEG compression on images, choosing between 8 compression levels, and obtain a comparison between uncompressed and compressed images. You can also generate the cosine transform of the compressed image.

• MATLAB release: MATLAB 7.7 (R2008b)

[Francesco Pizzo]

good work!

[Foxy Seif Eddine]

Well-done,it's very useful.
 

[ege yag]

 

[Anil Sharma]

good

[krist]

Thanks Anna DB.
Anyone tell me what this command do

fun=@(x)(T*x*T');

I'm newbie on Matlab and I need to understand this code...

[Anna DB]

in this line you are declaring an inline function where the independent variable is "x". If i remember well you should call it writing fun(par) where par is your value, in this case a vector i suppose, because the formula looks like a matricial factorization.
the function will calculate T*par*T' :)

[Anton Semechko]

Could be useful if the code was commented in English

[mahmoud elhaddad]

very good anna db
but
how can decoding this??