IMAGE COMPRESSION USING LBG ALGORITHM

Vector Quantization (VQ), a well-known compression technique, which has been widely used ...

Description

Linde, Buzo, and Gray (LBG) proposed a VQ design algorithm based on a training sequence. The use of a training sequence bypasses the need for multi-dimensional integration. The LBG algorithm is of iterative type and in each iteration a large set of vectors, generally referred to as training set, is needed to be processed. Usually, vectors sampled from a group of typical signals to be encoded altogether construct a training set T={x1,x 2,?.x M} ,where xi represents a sampled training vector and M represents the size of training set which is far greater than the codebook size N.

• Required Products: Image Processing Toolbox
• MATLAB release: MATLAB 6.1 (R12.1)
• Other Files: findweight.m, ; LVQ.M, ; LVQCODE.M, ; lvqdecode.m, ; main.m, ; parameter.MAT, ; PSNR.M, ; testlvq1.m, ; TRAINLVQ.M, ; codebook.bmp

[nashreen L]

 

[vishal R]

 

[jercy M]

 

[shenba vel]

 

[stefan gavat]

good

[Dapeng Wu]

 

[giri babu kande]

 

[yuehengli yue]

 

[RUPESH KAMBLE]

IT VERY GOOD AND IT HELPED ME FOR MY PROJECT WORK

[manpreet singh]

how to open the .m files?

[muthu lakshmi]

its good

[MA Tsunghan]

Thanks.I Love You

[Arief Sukmawan]

 

[kiavi narayanan]

gud

[Lin ruolin]

nice

[Sudipto Roy]

very good

[dd hh]

i'm bigener in matlab, i didn't know how to deal with the code , it doesn't work

[Kazi Mazhar]

 

[nagendran ranganathan]

i am beginner to the code can u explain the code and algorithm. and can we modify this to fuzzy c means algorithm

[yamihamad Al Yami]

 

[Karthick Ramanathan]

Thanks a lot for the code. Just what we wanted. But there are a few errors that need to be looked into.

[Nagendran ranganathan]

dear author
i am beginner for the matlab and ur code is Learning vector quantization or vector quantization. will i get the reply means really helpful to proceed my project with ur code.

expecting ur reply soon,

my email id is [e-mail]
with regards
nagendran

[dipak]

i am not able to run this code any help , how to run this code

i am getting following error
Warning: TRAINLVQ is an obsolete function.
> In nntobsf at 18
  In trainlvq at 7
  In main at 14
          Use NNT2LVQ and TRAIN to update and train your network.
 
??? Error using ==> trainlvq at 35
Not enough arguments.

Error in ==> main at 14
[v]=trainlvq(x,0);

[dipak]

ok i get it, for study of this lbg algo , any specific book ,

wherer i can get , psnr , error,find wight details.

[sunita]

it 's useful

[sunita]

in this following site i found same codes as u ve composed:::pudn.com,LBG.zip,LBG vector quantization source code (2007-02-07, matlab, 85KB, Downloads 48)