This program compress and recostruct using wavelets. We can select level of decomposition(here maximum 4 levels are given) of images using selected wavelet.
For eg:-wavelets can be haar, db1, db2,dmey...............
Decomposition can be viewed in figure.
(Please note that select 256X256 image for better result.)
Then compression can performed,
PERFL2 give compression score.
Then reconstruction can be performed.
Each decompsition we can choose different threshold values.
For each threshold value we can calculate mse,psnr,pq(picture quality),
bit ratio etc. To get pq install pqs function .
i have run your code in the matlab. it helps me much in my project. now i want to calculate the compression ratio from the compresed image from your code. how to do that? i cant understand the br(bit rates). is it possible to find the approximate compression ratio without the encoding and writting it into a file? if so, then please tell me the procedure. it will be very much helpful for me.
Thanks-azah
please tell me how to get compression ratio
13 Feb 2008
rr rrr
very good
31 Jan 2008
bhawna garg
hello sir
i run ur code in matlab. it is giving error in fwrite coz it is not locating pqs.exe, pic1.pqs & pic2.pqs. plz tell me from where shoud i get these.
regards
bhawna
Comment only
30 Jan 2008
nor azah
i have run your code in the matlab. it helps me much in my project. now i want to calculate the compression ratio from the compresed image from your code. how to do that? i cant understand the br(bit rates). is it possible to find the approximate compression ratio without the encoding and writting it into a file? if so, then please tell me the procedure. it will be very much helpful for me.
Thanks-azah
Comment only
02 Sep 2007
Yeasin Razib
Dear sir,
i have run your code in the matlab. it helps me much in my project. now i want to calculate the compression ratio from the compresed image from your code. how to do that? i cant understand the br(bit rates). is it possible to find the approximate compression ratio without the encoding and writting it into a file? if so, then please tell me the procedure. it will be very much helpful for me.
Thanks
Razib
18 Mar 2007
parul sahu
24 Feb 2007
hanan yaseen
dear sir
can you explain your work to me about this algorithm
i mean which type of algorithms is this? what is the mechanisum of the commands work?
because all the papers of compression using wavelet talking about SPIHT,EZW and so on
if i use your algorithm in my project how can i descripe it
i hope you answer me very soon
and thank you