Hugo Feng's profile - activity

I have encountered the exact same problem here building the latest version using source code from Github on OSX. Have you found any solution to this? Thank you.

No, unfortunately I didn't. As far as I know, this function in Android version is somewhat incomplete. ref: https://groups.google.com/d/msg/android-opencv/0MNilmUBuHc/iVJAJFS2KJgJ

Used to have the same weird problem here. Finally I found out the cause was these lines:

bmp = Bitmap.createScaledBitmap(bmp, canvas.getWidth(), canvas.getHeight(), false);
canvas.drawBitmap(bmp, 0, 0, null);

After I changed them to:

canvas.drawBitmap(bmp, (canvas.getWidth() - bmp.getWidth()) / 2, (canvas.getHeight() - bmp.getHeight()) / 2, null);

Everything went fine and solid. However image may not fullfill the canvas in this way. Still haven't found a proper way to scale the image ...

I'm trying to implement kalman filter in java on Android. However, I cannot find a way to specify the transition matrix, because there seems to be no setters or members in that class, and the documents are just simply copied from the python/c++ documentation.

I'm using OpenCV4Android 2.4.2 from NVPACK.

What should I do to implement Kalman Filter on Android ? I'm stuck here on my project and would be much appreciate if anyone could help.

Same problem using OpenCV4Andriod 2.4.2 here. Cannot find specified doc either. Have you find out any solution yet?