jlengrand.github.io/_posts/2011-11-02-classification-hu-and-zernike-moments-matlab.markdown

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layout	status	published	title	author	author_login	author_email	author_url	wordpress_id	wordpress_url	date	categories	tags	comments
post	publish	true	Classification : Hu and Zernike moments	Julien Lengrand-Lambert	jlengrand	julien@lengrand.fr	http://www.lengrand.fr	254	http://www.lengrandlambert.fr/wordpress/?p=254	2011-11-02 00:51:12.000000000 +01:00	Computer Vision Matlab	image processing hu zernike moments matlab classification	id author author_email author_url date date_gmt content 750 Deniz Cicek zendeniz1@yahoo.com MjAxMi0wMy0zMSAxMjowNjo0NiArMDIwMA== MjAxMi0wMy0zMSAxMTowNjo0NiArMDIwMA== Thanks. The links those you shared, will help me very much. Have a nice day. id author author_email author_url date date_gmt content 755 Julien Lengrand-Lambert julien@lengrand.fr http://www.lengrand.fr MjAxMi0wNC0wMiAwODowNzowOCArMDIwMA== MjAxMi0wNC0wMiAwNzowNzowOCArMDIwMA== Hi Deniz, Glad it helped ;), I searched for them a long time some years ago. Feel free to come back if you need some code using them :). id author author_email author_url date date_gmt content 974 Mohammad bagheri@cs.dal.ca MjAxMi0wNS0xMyAxODo0NzoyNSArMDIwMA== MjAxMi0wNS0xMyAxNzo0NzoyNSArMDIwMA== First, thank you so much for your post... But, regarding the Zernike code, I didn't understand how to get it, how to implement it ! Does I need to download Matlab and C++ files separately and put them in a folder and then mex C files? Thanks again id author author_email author_url date date_gmt content 1011 Julien Lengrand-Lambert julien@lengrand.fr http://www.lengrand.fr MjAxMi0wNS0yMSAxMzowNzoyNSArMDIwMA== MjAxMi0wNS0yMSAxMjowNzoyNSArMDIwMA== Hi Mohammad, Sorry for the delay, I was in vacation. Did you succeed into using it ? I posted this code some time ago now, but I do recall having to compile it. It seems weird for me to download each file separately though. Let me some time and I will try it and let you know :)

Hi all,

I am currently working on a Computer Vision application which requires a step of shape recognition. And I have been searching for lots of different parameters allowing to precisely classify objects afterwards.

In a lot of applications, one need parameters that are invariant to linear transformations (that is translation, rotation and scaling) to ease object classification in various conditions.

If you search for such parameters, you will quickly hear the name of Zernicke and Hu moments.  Here are links to a Matlab implementation of those descriptors:

• Zernike applied to protein localization
• Hu applied to OCR

Have fun using it, but don't forget to mention their previous authors ;).

And if you need more descriptors in your classification, here is a quite exhaustive list (at least as much as it can be).

If I have some spare time, I might think of a Pythonic implementation one day ^^. I'll let you know.

Hope you'll enjoy ;)

See You