Patrick Tyll's profile - activity

Hey Guys, i develop a similar camera-application for Android with the openCV4Android. I use a HTC-One too for debugging and test cases. If I try to connect to the camera the app throws some Debug-Output.

08-21 12:08:43.855: D/qdmemalloc(4372): ion: Unmapping buffer  base:0x68c16000 size:4096
08-21 12:08:43.855: D/qdmemalloc(4372): ion: Unmapping buffer  base:0x6c06c000 size:4177920
08-21 12:08:43.855: D/qdmemalloc(4372): ion: Unmapping buffer  base:0x675ec000 size:4096
08-21 12:08:43.855: D/qdmemalloc(4372): ion: Unmapping buffer  base:0x6e58f000 size:8355840
08-21 12:08:43.855: D/qdmemalloc(4372): ion: Unmapping buffer  base:0x68907000 size:4096
08-21 12:08:43.855: D/qdmemalloc(4372): ion: Unmapping buffer  base:0x6f183000 size:8355840

Did you solve it? I think I have exactly the same problem.

What is about the return value of the toArray() method? public byte[] toArray() The return value is a 1 dimension Array. It should be correct if i try to copy it into a 1-dimensional array. In some test-runs on a galaxy s2 or nexus 7 I print the status array on the console: Output = [0,1,1,0,1] I think it's a camera problem. The Version 2.4.6 can't connect correctly to the camera of the htc-one or some camera config changes like changing the resolution is the reason.

I have not solution for this problem wich solve it, but i know the reason of the problem.

I used a HTC-one for testing my application to Debug it and many other devices.

I found the same problem in the opecCV-Devzone: [http://code.opencv.org/issues/2359]

I adapted line 54 of my .java file. My code at the last post is only a piece. In line 54 is only this code: byte statusS[] = status.toArray(); Sorry for my bad english. I hope you understand me..

Hey guys,

My Code:

status = new MatOfByte();
err = new MatOfFloat();

Video.calcOpticalFlowPyrLK(previousMatFrame, currentMatFrame, prevuisMatOfPoint2f, pointsWichAreFound, status, err);

byte statusS[] = status.toArray();
//the exception after status.toArray(); 
08-14 14:00:11.086: E/AndroidRuntime(6639): java.lang.RuntimeException: Native Mat has unexpected type or size: Mat [ 6*1*CV_32FC2, isCont=true, isSubmat=false, nativeObj=0x6c0bb388, dataAddr=0x6c0b3f00 ]
08-14 14:00:11.086: E/AndroidRuntime(6639):     at org.opencv.core.MatOfByte.toArray(MatOfByte.java:54)
08-14 14:00:11.086: E/AndroidRuntime(6639):     at de.itintouch.mausapp.activitys.MausActivity.onCameraFrame(MausActivity.java:266)
08-14 14:00:11.086: E/AndroidRuntime(6639):     at org.opencv.android.CameraBridgeViewBase.deliverAndDrawFrame(CameraBridgeViewBase.java:387)
08-14 14:00:11.086: E/AndroidRuntime(6639):     at org.opencv.android.JavaCameraView$CameraWorker.run(JavaCameraView.java:321)
08-14 14:00:11.086: E/AndroidRuntime(6639):     at java.lang.Thread.run(Thread.java:864)

If i delete line 54 for converting the status object into an array, the application runs in normal case without errors. What could it be?? Please help me.

Hey guys,

it try to set the resolution of the front camera in my Android project to optimize the fps.

In the "OpenCV Tutorial 3 - Camera Control" Sample it works with the back camera. If i change it to:

mOpenCvCameraView.setCameraIndex(JavaCameraView.CAMERA_ID_FRONT);

it doesn't work. The OptionMenu is disabled after changing.

Hey dudes,

at first. Sorry for my bad english...

Ok. I'd like to develop a native Android App with the OpenCV SDK. I download the SDK folder and test some sample Project on my Device.

My question is:

Is it possible to implement the OpenCVManager as a library in my own Project to skip the Dialog at the beginning of the sample apps. I think it is more comfortable for the user if he don't have to download another app to run the main one.

Kind regards / Mit freundlichen Grüßen

Patrick Tyll