MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn moreOpportunities for recent engineering grads.

Apply TodayTo resolve issues starting MATLAB on Mac OS X 10.10 (Yosemite) visit: http://www.mathworks.com/matlabcentral/answers/159016

Asked by M@lik Ali on 7 Feb 2013

Hi All,

i need to

splits an image into 30 channels in frequency domain with equal divisions in angular di-rection and octave division in radial direction

please help me,

Actually i want to implement the homogeneous Texture Descriptor of MPEG-7. You can find the detail if interested just read HTD at page 11

Thanks in Advance

*No products are associated with this question.*

Answer by Image Analyst on 7 Feb 2013

Have you tried fft2()?

Show 2 older comments

Image Analyst on 7 Feb 2013

I suggest you read the paper. I haven't read it, nor do I have time to read it, and then explain it to you, even if it did interest me. There are lots of things I'd like to study but I don't even have time for all of them, much less a topic that I don't really need. Sorry, but unless it's like 5 minutes or less, I can't do much. A 13 page complicated paper doesn't fit into that 5 minute category.

Walter Roberson on 7 Feb 2013

Likewise, I seldom bother to read papers when the Question is so unclear.

When Questions are clearer but might be missing explaining a term, I do sometimes skim papers, looking just for that one little bit of information, but often not bothering to try to understand the parts before or after.

Sometimes a Question sounds interesting enough that I am willing to spend a fair bit more time... if I am in the mood... if I am not tired... if I do not have a good book to read... if I am not engaged in one of my other activities... if I have already cleaned my mailbox of the 200 or so spam/scam messages I receive every day... if I don't hear any chocolate calling my name...

M@lik Ali on 7 Feb 2013

Thanks for you kind response, the information to read is only 10 lines just to see the equations, don't need to read the whole paper.

what i want is how to splits an image into 30 channels in frequency domain with equal divisions in angular direction and octave division in radial direction . in the paper at page 11 is under section HTD is some mpre information because they are using 2D gabor Function.

please help me out.

## 3 Comments

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/62538#comment_127700

FAQ: http://matlab.wikia.com/wiki/FAQ#Can_you_program_up_the_algorithm_in_this_article_for_me_and_explain_it_to_me.3F

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/62538#comment_127702

Thanks for the response Can you just suggest me how to

splits an image into 30 channels in frequency domain with equal divisions in angular direction and octave division in radial direction

Direct link to this comment:http://www.mathworks.com/matlabcentral/answers/62538#comment_127705

What does it mean for frequency to be divided by angular direction, or radial direction?