java - OpenCV predict takes too much time and freezes the screen -


i have tried following code predict using camerabridgeviewbase.

public mat oncameraframe(camerabridgeviewbase.cvcameraviewframe inputframe) {     mgray = inputframe.gray();      if (mabsolutefacesize == 0) {         int height = mgray.rows();         if (math.round(height * mrelativefacesize) > 0) {             mabsolutefacesize = math.round(height * mrelativefacesize);         }     }      matofrect faces = new matofrect();     if (mjavadetector != null)         mjavadetector.detectmultiscale(mgray, faces, 1.1, 2, 2,                 new size(mabsolutefacesize, mabsolutefacesize), new size());      rect[] facesarray = faces.toarray();      if (facesarray.length == 0) {         return mrgba;     }     if (facetype == predict && canpredictnext) {         canpredictnext = false;         mat m = mgray.submat(facesarray[0]);          int[] label = new int[1];         double[] d = new double[1];         facerecognizer.predict(m, label, d);

here screen freezes until log has been gets printed. may know how avoid this?

        log.v(tag, "id: "+label[0]+", confidence: "+d[0]);         canpredictnext = true;     }     return mrgba; }

this predict freezes screen minimum 3 sec.

predict in facerecognizer class.

public void predict(mat mgrey, int[] label, double[] confidence) {     predict(mgrey.getnativeobjaddr(), label, confidence); }

and native predict method declared 

public native void predict(long mats, int[] integer, double[] d);

jni method predict is

jniexport void jnicall java_com_opencv_test_facerecognizer_predict         (jnienv *env, jobject thisobj, jlong images1, jintarray label, jdoublearray confidence) {     mat &mgr = *(mat *) images1;     jint *labelbody = (*env).getintarrayelements(label, 0);     jdouble *confidencebody = (*env).getdoublearrayelements(confidence, 0);     int &mylabel = labelbody[0];     double &myconfidence = confidencebody[0];     model->predict(mgr, mylabel, myconfidence);     (*env).releaseintarrayelements(label, labelbody, 0);     (*env).releasedoublearrayelements(confidence, confidencebody, 0); }

any increase speed of predict , resolve predict issue highly appreciated.


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