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Li yang Ku

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Blog author of the Serious Computer Vision Blog
http://computervisionblog.wordpress.com/

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Computer Vision

 

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16 Jan 2012 Screenshot Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku computer vision, surf, sift, object recognition, feature detection, feature extraction 119 19
  • 3.66667
3.7 | 5 ratings
22 Apr 2011 Screenshot Match Plot Draw matching lines between corresponding points in two image. Useful for SIFT feature matching. Author: Li yang Ku plot, match, line, sift, surf, corresponding points 60 4
  • 5.0
5.0 | 4 ratings
Comments and Ratings by Li yang View all
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10 Jun 2014 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku

The SURFmex library is now on github https://github.com/PetterS/surfmex
To run the code, open Demo.m in the editor and click run. Make sure you link the SURFmex library, see comments in Demo.m

06 Mar 2013 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku

Yes, it should be able to do this job. Just train it with different QR codes or a QR code with out the middle part.

05 Mar 2013 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku

Hi Saleh, you should double check you have surfpoints.mexw32 in the same folder which surfpoints.m locates in, and also make sure you added the surfmex directory to path. I believe you didn't install surfmex correctly.

01 Mar 2012 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku

Unfortunately this is not a probabilistic method, therefore unlike http://computervisionblog.wordpress.com/2011/12/11/object-recognition/ it doesn't determine an object exist or not base on a probabilistic threshold. However, you should be able to get a degree of confidence based on "length(filter_match)" which is the number of votes remained after filtering. To lower the threshold of finding an object or not, you can modify the parameters I manually set under %check location, %check orientation, %check scale, etc.

17 Feb 2012 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku

A pen probably won't work, unless there are words on the pen and you always show the same side of the pen in the test image. Remind that this method uses SIFT like features. SIFT works well on unique patterns with certain size. Some object with a large surface and some special patterns like words will probably work well.

Comments and Ratings on Li yang's Files View all
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10 Jun 2014 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku Ku, Li yang

The SURFmex library is now on github https://github.com/PetterS/surfmex
To run the code, open Demo.m in the editor and click run. Make sure you link the SURFmex library, see comments in Demo.m

10 Jun 2014 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku Kumar ar, Roshan

hi sir... how to execute this code..

25 Feb 2014 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku Feng, Wu

Hi Li yang Ku,
I can't open the website of SURFmex library for detail. So could you send me the same one? My email is hawf1988@163.com.

Best Regards

06 Mar 2013 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku Ku, Li yang

Yes, it should be able to do this job. Just train it with different QR codes or a QR code with out the middle part.

06 Mar 2013 Object Matching An object matching method based on Lowe, D.G. Object recognition from local scale-invariant features Author: Li yang Ku Saleh

Hi Li yang Ku,
Thank you very much, it is work now.
Do you think this program is applicable to modify to be able to recognize QR-Code? What I need is just detect QR-Code Not read it, which means is this image contains QR-Code or not? I don't need to read it, because I have another program does that job(decoding QR-Code).
Best Regards

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