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Nonsubsampled Contourlet Toolbox

version 1.0.0.0 (97.2 KB) by Arthur Cunha
Toolbox Implementing NSCT
4.2
25 Ratings

35 Downloads

Updated 21 Feb 2006

No License

This toolbox implements the Nonsubsampled Contourlet Transform as described in the paper:

A. L. da Cunha, J. Zhou, M. N. Do, "The Nonsubsampled Contourlet Transform: Theory, Design, and Applications," IEEE Transactions on Image Processing, to appear 2005.

Cite As

Arthur Cunha (2021). Nonsubsampled Contourlet Toolbox (https://www.mathworks.com/matlabcentral/fileexchange/10049-nonsubsampled-contourlet-toolbox), MATLAB Central File Exchange. Retrieved .

Comments and Ratings (51)

浩印 白

Kun yu

Chaima Brr

Kym Gois

In decdemo, nlevel=[0,1,3] means than there are 4 levels of pyramidal decomposition (number of colummns +1) and:
in level 1 (lowpass band) -> only 1 image
in level 2 (bandpass subband) - > 2^0= 1 image (no directional decomposition)
in level 3 (bandpass subband) > 2^1= 2 images corresponding to 2 directional subbands
in level 4 (highpass subband) - > 2^3= 8 images corresponding to 8 directional subbands

ZP J

Reply to Tigger826: I had the same confusion. However, after viewed the code, I find that 0 means copying the input (pyramidal decomposition) to output, rather than wavelet decomposition. But I guess the parameter 1 maybe insignificant.

phanidhanasri lesana

phanidhanasri lesana

paresh burande

where do i find zconv2 function ?? in this tool box anyone please some info ??

Nancy Mehta

na zhang

Tigger826

i'm quite confused with the parameter 'levels' in the file decdemo.m. The instruction illustrates that it should no less than 2,while the demo set it to nlevel=[0,1,3].what does the first zero in nlevel mean ?someone help me out！

Tigger826

i'm quite confused with the parameters levels in the file decdemo.m. The instruction illustrates that it should no less than 2,but the demo set it to nlevel=[0,1,3].someone help me out！

Qiong Song

yu zhang

There are wrong function names in "dfbdecdemo.m". "nssdfbdec" and "nssdfbrec" should be revised as "nsdfbdec" and "nsdfbrec", respectively.

Soum

The demo program works well only for certain decomositions but when we change the decomposition it doesn't work!in my case [5, 4, 3, 2, 2]

z lee

thanks for sharing this code. it's very helpful.

Selva Karna

error

Lakshmi

does matlab 2014a has in built nsct tool box? how can we include a tool box to exsiting software? please give me a reply quickly its urgent.

Stéfane

Sorry,
Forgive me question. We just need to do it manually !

Stéfane

Hello,
Like Subash, I don't understand how to install nsct_toolbox with Octave. I've already downloaded it.
Thanks in advance

Anastasia Pampouchidou

wang

thanks

SRI

Hi you have displayed all the files related to NSCT,but one function file is in C file(zconv2).
Can somebody replace that file in matlab .m format so it will be help full to run this tool box with my main file

Subash

anyone pls tell how to run this code....
known person plzz help me,,

Subash

HOW TO download this file....

Susan

Thank you!

diwakar jinnu

I am beginner in matlab can any1 help me how to use the toolbox, i downloaded it,i do no how to run it and which file is to be run and how.. pls help me out its very urgent.. thank u in advance.

mohammad

Thanks.

zhao

ashkan abbasi

mah

hi thanks a lot for your codes

now i have a problem

for nlevels = 2 the mkl is [2 0;0 2] and the Quincunx sampling is matrices is q1 = [1, -1; 1, 1] can i use dup(x, step,phase) for mk1 and qupz(x, type) for q1 in matlab to implement them?

i can't undrestand zconv2.c function if you program this function in matlab my problems solved

Yipeng Liu

mary

Matlab can't find function "atrousc.m" called in "nsfbdec.m".
how can i fix it?

kun

thank you.

malini deepika

Iam doing fusion of pan and ms image iam using nonsubsampled contourlet transform to de compose the image but nsct is not decomposing the colour image what can be done to decompose the colour image

xiaoyan wang

thank you

lin

thank you.now i am trying to replace the NSP in NCST with LP,but it always show errors ,and i don't know how to change the parametres,please help me.

Razia

The demo program works well only for square matrix image
( example 512x512).BUT for a image of different dimension for example 128x104 size image, it shows error in the symext.m . Anybody please clear...

Kevin

For Linux/Unix users:
there are comments in C++ style within zconf2.c, atrousc.c and zconf2s.c which will lead to the error (for gcc version 4.1.3):
error: expected expression before ‘/’ token
remove all comments containing // or substitute them by ANSI-C comments. And try again.

j

sorry,i want to know what is the reason for the errorundefined commandf"

hemant goklani

I AM USING SAME TOOLBOX. I HAVE ONE QUERY REARDING THIS

i want to increase directional subbands. i.e. for Nlevel=2 i get 4 subbands. but in that 4 subbands i want to increase directional subbands. so is it possible? if yes then how we can change that parameter. because if we write nlevel=[0,1,2] it means it gives results upto 2 level but how to change/increase directional componets? please reply as soon as possible

hemant goklani

I AM USING SAME TOOLBOX. I HAVE ONE QUERY REARDING THIS

i want to increase directional subbands. i.e. for Nlevel=2 i get 4 subbands. but in that 4 subbands i want to increase directional subbands. so is it possible? if yes then how we can change that parameter. because if we write nlevel=[0,1,2] it means it gives results upto 2 level but how to change/increase directional componets? please reply as soon as possible

hbu 

thank you

hbu 

good

hbu 

good

Juan Luo

Thanks

gloria menegaz

I'd like to try this software. Thanks a lot

mohamed El aallaoui

MA Guorui

good

Mohamad Ali akhaee

Peyman P. Moghaddam

MATLAB Release Compatibility
Created with R14
Compatible with any release
Platform Compatibility
Windows macOS Linux

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