MoHaKa's profile - activity

in the ticket Kirill Kornyakov says that my exception has been solved, could you tell me how can i get the solved copy of open cv please?

i have updated the ticket, but i wanna ask you: is this problem in my code or it is bug in opencv?

OK, i will edit my question

hello, i am working on android app using open cv library, so i have to load open cv on (onResume) of my activity:

try {
    if (!OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, con, new LoaderCallbackInterface() {
            @Override
            public void onPackageInstall(int operation, InstallCallbackInterface callback) {
            }

            @Override
            public void onManagerConnected(int status) {

            }
            })) {
        Toast.makeText(con, "cannot connect to opencv ", Toast.LENGTH_SHORT).show();
    }
} catch (Exception e) {
    e.printStackTrace();
    Log.e("Utilities", "can not load opencv, an exception has been thrown while.");
}

now my problem is sometimes and with unspecific conditions the open cv load fail and give me this LogCat:

V/Main(7042): OnCreate
V/Main(7042): onResume
D/OpenCVManager/Helper(7042): Service connection created
D/OpenCVManager/Helper(7042): Trying to get library path
W/System.err(7042): android.os.DeadObjectException
W/System.err(7042): at android.os.BinderProxy.transact(Native Method)
W/System.err(7042): at org.opencv.engine.OpenCVEngineInterface$Stub$Proxy.getLibPathByVersion(OpenCVEngineInterface.java:137)
W/System.err(7042): at org.opencv.android.AsyncServiceHelper$1.onServiceConnected(AsyncServiceHelper.java:182)
W/System.err(7042): at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:1097)
W/System.err(7042): at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:1114)
W/System.err(7042): at android.os.Handler.handleCallback(Handler.java:615)
W/System.err(7042): at android.os.Handler.dispatchMessage(Handler.java:92)
W/System.err(7042): at android.os.Looper.loop(Looper.java:137)
W/System.err(7042): at android.app.ActivityThread.main(ActivityThread.java:4898)
W/System.err(7042): at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err(7042): at java.lang.reflect.Method.invoke(Method.java:511)
W/System.err(7042): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1008)
W/System.err(7042): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:775)
W/System.err(7042): at dalvik.system.NativeStart.main(Native Method)
D/OpenCVManager/Helper(7042): Init finished with status 255
D/OpenCVManager/Helper(7042): Unbind from service
D/OpenCVManager/Helper(7042): Calling using callback
E/OpenCVLoader/BaseLoaderCallback(7042): OpenCV loading failed!
D/AndroidRuntime(7042): Shutting down VM
W/dalvikvm(7042): threadid=1: thread exiting with uncaught exception (group=0x420b32a0)

so what is this problem and why "OpenCV loading failed!" and how to solve it? Please answer me as soon as possible :)

in galaxy the resolution is 960 720 but on transformer 704 576 Is this the correct resolution to get valid image??

i have tow android devices the first is asus transformer tf101 and the other is Samsung galaxy note

now, my problem is in generating images from android camera preview. this is my java code:

public void onPreviewFrame(byte[] data, Camera camera) {
    File test = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "/myImg.jpg");

    Mat mYuv = new Mat(previewSize.height + (previewSize.height / 2), previewSize.width, CvType.CV_8UC1);
    Mat mRgba = new Mat(previewSize.height, previewSize.width, CvType.CV_8UC1);
    mYuv.put(0, 0, data);
    Imgproc.cvtColor(mYuv, mRgba, Imgproc.COLOR_YUV2BGR_NV12);
    Highgui.imwrite(test.getPath(), mRgba);
}

on galaxy: mRgba returns fine image, but on transformer the result is green image:

what should i do to generate valid image on transformer??

if my question is not clear please comment me

yes i have tried it and it worked, anyway thank you for answer!

in java, mat contractor dosent contain byte[], so you cant put image data in contractor directly.

thank you alot your link helped me :)

hi, i am developing android app using android sdk camera. on camera preview i need the frame content so i am using PreviewCallback to return the data in byte array, now my problem is saving the data in mat object the mat return gray images:

public void onPreviewFrame(byte[] data, Camera camera) {
    Mat src = new Mat(previewSize.height, previewSize.width, CvType.CV_8U, new Scalar(255));
    src.put(0, 0, data);
    Highgui.imwrite("/mnt/sdcard/1.jpg", src);
}

anybody can help me to generate argb images

note: i am using NV21 in preview image format.