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2014-01-07 23:29:55 -0500 asked a question How to set minHessian value in android/java

How to set hessian threshold value for surf detectror in opencv library.

In C++. I can set it as:

int minHessian = 100;
SurfFeatureDetector detector( minHessian );**

But in android, surf detector is created as:

FeatureDetector surf=FeatureDetector.create(FeatureDetector.SURF);

So, how does I set the value of min hessian in android.

Make note that, SURF is not available in newer versions of opencv library, I am using opencv 2.4.1, so that I can do surf detection in android.

2014-01-06 22:22:23 -0500 commented answer The homography tutorial in java

I dont know why, i have used this whole code, but it is giving me error in detector.detct() line, Can you please share your code

2014-01-06 22:13:28 -0500 commented answer Finding SubImage from MainImage in Android

I have followed that tutorial, How to use it with eclipse, i dont know, they are installing the thier example by command-line to device. I dont know how they are using the both .so files they have made in that example

2014-01-06 07:40:11 -0500 asked a question matchShapes() example for Android

I want to find smalller image(may be scaled) inside bigger image, if available then wants the coordinates of it. From Some discussions i have found that matchShapes method can be used for that. But i dont know how to use it and what are the pre-processing required before sending image to this method.

Does anyone know other methods which can be useful to achieve the same task(other than matchTemplate()- because it will not work if image has been scaled).

2014-01-06 00:41:12 -0500 asked a question Convert iOS Code for openCV to Android

I have the code available at, Now i want to convert the same code to Android. I dont know anything about android. Can anyone please help me out, to convert this OpenCV's ios code to Android.

The one main problem in converting that is SURF implementation is not available in OpenCV's android Library. Now i want to make use that surf implementation in android, how i can use this. Please give detailed description, just dont mention the links. i dont know much about the android, so please if possible give it in detail. Thanks in advance.

2014-01-06 00:33:09 -0500 commented answer Finding SubImage from MainImage in Android

I am not getting how to make Android code for that

2014-01-03 05:45:04 -0500 received badge  Editor (source)
2014-01-03 05:41:28 -0500 asked a question Finding SubImage from MainImage in Android

I have 2 images, 1 main image and 1 sub image, now i want to find that does subImage is part of MainImage or not, if it is part of main image then at which location(coordinates) of main image.

For solving the my question, i have tried template matching, but template Matching is giving fine result if and only if sub image is of exact size as part of main image, but if sub image is scaled, then it is not able to give the accurate result/ fails.

Now, please if anyone knows about it, please help me out in that. Any help will be appreciated. As i am totally new to opencv as well as android, please give me detailed procedure or code if possilble. thanks in advance.