Pass And Return Opencv Mat Object With Jni
I would like to write a function in JNI like this: JNIEXPORT jobject JNICALL Java_com_datumdroid_android_ocr_simple_HoughLine_nativeDetectLine (JNIEnv * jenv, jclass, jstring file
Solution 1:
http://answers.opencv.org/question/12271/can-the-java-interface-pass-a-mat-to-opencvs-c/
JNIEXPORT void JNICALL Java_org_opencv_samples_tutorial2_Tutorial2Activity_FindFeatures(JNIEnv*, jobject, jlong addrGray, jlong addrRgba)
{
Mat& mGr = *(Mat*)addrGray;
Mat& mRgb = *(Mat*)addrRgba;
... do stuff with the Mat objects ...
}
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