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2020-10-20 13:05:14 -0600	received badge	● Popular Question (source)
2013-04-19 14:12:00 -0600	asked a question	how can i get the camera projection matrix out of calibrateCamera() return values hi there!! i am trying to get a 34 camera matrix for triangulation process but calibreateCamera() returns only 33 and 41 matrices. how can i get the 34 out of those matrices? thanks in advance!!
2013-04-15 10:03:55 -0600	received badge	● Scholar (source)
2013-04-15 08:22:56 -0600	asked a question	‘calibrateCamera’ is not a member of ‘cv’ hi everyone. i have a problem calling calibrateCamera() in a simple code that i tried. `vector<vector <Point3f> > objectPoints; vector<vector <Point2f> > imagePoints; Mat cameraMatrix; Size imageSize(320, 240); Mat distCoeffs; vector<Mat> rvecs,tvecs; double x = cv::calibrateCamera(objectPoints, imagePoints, imageSize, cameraMatrix, distCoeffs, rvecs,tvecs, 0);` sadly i'm getting this response from the g++ fsd.cpp: In function ‘int main(int, char**)’: fsd.cpp:60:14: error: ‘calibrateCamera’ is not a member of ‘cv’ the `cv::` is not needed because i typed in the head ‘using namespace cv;‘ so i tried to remove the ‘cv::‘ then i got ‘calibrateCamera’ was not declared in this scope thanks in advance!!!
2013-01-22 09:40:52 -0600	commented answer	Couldn't load native_sample: findLibrary returned null none of them worked.. any other suggestions?
2013-01-22 02:27:33 -0600	commented answer	Couldn't load native_sample: findLibrary returned null thank you for the help, but how can i fix that?
2013-01-21 11:41:01 -0600	asked a question	Couldn't load native_sample: findLibrary returned null I downloaded opencv 2.4.3 to my ubuntu 12.04 and i tried to run the samples on my galaxy s II Adnroid 4.04. all the samples ran except ones using ndk. I get this in console: `>** Build of configuration Default for project OpenCV Tutorial 3 - Add Native OpenCV > >/home/icpavon/android-ndk-r8d/ndk-build >/home/icpavon/android-ndk-r8d/ndk-build: 1: /home/icpavon/android-ndk-r8d/ndk-build: dirname: not found >/home/icpavon/android-ndk-r8d/ndk-build: 86: /home/icpavon/android-ndk-r8d/ndk-build: uname: not found >ERROR: Unknown host operating system: > > Build Finished **` And this is the logcat: >01-21 19:29:46.153: I/OCVSample::Activity(10322): Instantiated new class org.opencv.samples.tutorial3.Sample3Native >01-21 19:29:46.153: I/OCVSample::Activity(10322): called onCreate >01-21 19:29:46.163: D/CameraBridge(10322): Attr count: 3 >01-21 19:29:46.168: D/JavaCameraView(10322): Java camera view ctor >01-21 19:29:46.178: D/OpenCVManager/Helper(10322): Service connection created >01-21 19:29:46.178: D/OpenCVManager/Helper(10322): Trying to get library path >01-21 19:29:46.438: D/OpenCVManager/Helper(10322): Trying to get library list >01-21 19:29:46.713: D/OpenCVManager/Helper(10322): Library list: "" >01-21 19:29:46.713: D/OpenCVManager/Helper(10322): First attempt to load libs >01-21 19:29:46.713: D/OpenCVManager/Helper(10322): Trying to init OpenCV libs >01-21 19:29:46.713: D/OpenCVManager/Helper(10322): Trying to load library /data/data/org.opencv.engine/lib/libopencv_java.so >01-21 19:29:46.713: D/dalvikvm(10322): Trying to load lib /data/data/org.opencv.engine/lib/libopencv_java.so 0x41543fa0 >01-21 19:29:46.728: D/dalvikvm(10322): Added shared lib /data/data/org.opencv.engine/lib/libopencv_java.so 0x41543fa0 >01-21 19:29:46.728: D/OpenCVManager/Helper(10322): OpenCV libs init was ok! >01-21 19:29:46.728: D/OpenCVManager/Helper(10322): First attempt to load libs is OK >01-21 19:29:46.728: D/OpenCVManager/Helper(10322): Init finished with status 0 >01-21 19:30:41.783: I/Process(10414): Sending signal. PID: 10414 SIG: 9 >01-21 19:35:37.018: I/Process(10708): Sending signal. PID: 10708 SIG: 9 >01-21 19:35:44.698: I/OCVSample::Activity(11133): Instantiated new class org.opencv.samples.tutorial3.Sample3Native >01-21 19:35:44.698: I/OCVSample::Activity(11133): called onCreate >01-21 19:35:44.708: D/CameraBridge(11133): Attr count: 3 >01-21 19:35:44.708: D/JavaCameraView(11133): Java camera view ctor >01-21 19:35:44.723: D/OpenCVManager/Helper(11133): Service connection created >01-21 19:35:44.723: D/OpenCVManager/Helper(11133): Trying to get library path >01-21 19:35:44.978: D/OpenCVManager/Helper(11133): Trying to get library list >01-21 19:35:45.208: D/OpenCVManager/Helper(11133): Library list: "" >01-21 19:35:45.208: D/OpenCVManager/Helper(11133): First attempt to load libs >01-21 19:35:45.208: D/OpenCVManager/Helper(11133): Trying to init OpenCV libs >01-21 19:35:45.208: D/OpenCVManager/Helper(11133): Trying to load library /data/data ... (more)
2013-01-21 11:25:29 -0600	commented answer	Problem working with Native Apps how do you know which value to put in APP_ABI for each device?
2013-01-21 11:21:27 -0600	commented answer	Couldn't load native_sample: findLibrary returned null opencv4android Can you explain exactly what to add?