wavelet based contourlet transform

I need wavelet-based contourlet transform matlab code but I cannot find this code,dose function with this ability exist in matlab?can you help me?thanks in advance.

[nadia]

no one can help me!!?

Answer 1

[John BG]

Nadia

try the following

1.

install this contourlet toolbox, by Minh Do and Martin Vetterli http://uk.mathworks.com/matlabcentral/fileexchange/8837-contourlet-toolbox?s_tid=srchtitle

The same professors Minh Do and Martin Vetterli has a webpage at the Illinois University with more ridglet, contourlet and wavelet MATLAB code.

http://minhdo.ece.illinois.edu/software/

3. Or the non subsampled contourlet toolbox by Arthur Cunha

http://uk.mathworks.com/matlabcentral/fileexchange/10049-nonsubsampled-contourlet-toolbox?s_tid=srchtitle

if you find this answer useful would you please be so kind to mark my answer as Accepted Answer.

To any other reader, please if you find this answer of any help solving your question,

please click on the thumbs-up vote link,

thanks in advance

John BG

<mailto:[e-mail] [e-mail]>

[nadia]

thank you John, but if I want to calculate wavelet based contourlet, can this toolbox help me?or this is different from it?

[John BG]

Hi Nadia

To the question, is there contourlet code? now you know there is.

To whether such tool may be of help solving your project or you may even be able to solve it without such toolbox, or with any other available tools, it's important firstly to define the problem to solve, that to this point has not been mentioned in this question.

So, would you like to define the problem to solve in this same question? or perhaps you would like to start another question clearly defining input data, processing to solve, expected output, .. anything that you may consider relevant for readers to help you.

If you decide to post another question with the specifics of the problem to solve with wavelets, with Minhdo's tool box, or else, please post a link to next question in this question, to better follow up?

regards

John BG

<mailto:[e-mail] [e-mail]>

Answer 2

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/?term=tag%3A%22contourlet%22

[Evangeline Dhivya]

Thank you Walter. I download the countourlet tool, but I don't have any idea to use the functions for my multispectral image. Please help me. Thanks in advance.

[Jan]

@Evangeline Dhivya: Which tool do you mean? What do you want to calculate? What are your inputs? I suggest to open a new thread and to mention the details.

[Evangeline Dhivya]

Thanks @Jan Simon I need the code to apply the input multispectral Madurai image to laplacian pyramid filter. kindly help me.

[Jan]

@Evangeline Dhivya: Did you read my questions? Again, please open a new thread and explain the details.

[Evangeline Dhivya]

@Jan Simon: Sorry Since I am a new user of this site I don't have any idea to create a thread. Can you tell how to create it.

[Jan]

@Evangeline: Simply press the "Ask" button on top of this page. There you can insert your question.

Answer 3

[PRASHANT AMBADEKAR]

I am using the following code

>> Ni=5;
>> Nd=3;
>> nlevels = Nd*ones(1,Ni);
>> a = imread ('cameraman.tif');
>> dfilter = 'dmaxflat7';
>> pfilter = 'maxflat';
>> output = nsctdec( a, nlevels, dfilter, pfilter );

It is showing the following error:

Undefined function or variable 'zconv2'.

 Error in nssfbdec (line 61)
    y1 = zconv2( x, f1, mup );

 Error in nsdfbdec (line 103)
    [y{1}, y{2}] = nssfbdec( x1, k1, k2, q1 ) ;

 Error in nsctdec (line 112)
        xhi_dir = nsdfbdec(xhi, filters, levels(nIndex-1));

Can anyone comment on this?

[Walter Roberson]

See https://www.mathworks.com/matlabcentral/answers/114371-calling-c-file-from-m-fil