EXTRACT FEATURE

[Madhubalan]

Hi,

   From the attached image,i need to extract(find) the features of the target object,in which the printer is the target object.

What are the target feature to be extracted ? and 

how it can be extracted?

Thank you

[chulminy]

Hi Madhubalan

You can get an idea from the following review article. (http://crcv.ucf.edu/papers/Object%20Tracking.pdf : Object detection part)

Thanks

Chul Min

[Klemen]

Hello,

how about using SIFT descriptors and homography. You need at least 4 matched keypoints to calculate the homography.

Please see the attached example (your image). You need to install OpenCV 2.4.6 (http://opencv.org/) and add the "C:\Program Files (x86)\OpenCV 2.4.6\opencv\build\x86\vc10\bin" to system path (see here: http://windowsitpro.com/systems-management/how-can-i-add-new-folder-my-system-path).

Then just run the example. Here is a screenshot of the result.

Best regards,

K

[Madhubalan]

Hi klemen,

                 It is working fine,can you please send me the files that you used to code SIFT descriptors and homography.so that i can understand the concept about it.

Thank you 

[Klemen]

Hello,

please see the following link for source code:

Scale-invariant feature transform source code&DLL

Best regards,

K

[Madhubalan]

Hi klemen,

              for object detection using SIFT,i could able to detect the object by comparing the refrence image and the main image,

For the attached images i could not able to get the rectangular box to detect the object but i can get the matches.

Thank you