opencv - OrbFeaturesFinder giving different result when implemented on Android platform -


i using orbfeaturesfinder detect keypoints in images.

ptr<featuresfinder> finder; finder = makeptr<orbfeaturesfinder>(); vector<imagefeatures> features(num_images); (*finder)(img, features[i]);

i used code on linux , implemented same on android, results different sometimes, in given link http://imgur.com/a/wqxzx

what can reason behind nature of output.

method of accessing images in android image saved in jpeg form, read[edit] -

    for(int = 0; < imgnames.size(); i++){         bitmap bitmap = getthumbnail(imgnames.get(i));         int imagew = bitmap.getwidth();         int imageh = bitmap.getheight();          byte[] rgb = getbytearray(imagew, imageh, bitmap, "rgb");         bitmap.recycle();          mat mrgb = new mat(imageh, imagew, cvtype.cv_8uc3);         mrgb.put(0, 0, rgb);         imgproc.cvtcolor(mrgb, mrgb, imgproc.color_bgr2rgb, 3);          panoimgs.add(mrgb);      }

and sent jni -

jclass matclass = env->findclass("org/opencv/core/mat"); jmethodid getnativeaddr = env->getmethodid(matclass, "getnativeobjaddr", "()j");  int numimgs = env->getarraylength(jinputarray);  vector<mat> natimgs; for(int i=0; < numimgs; ++i) {     natimgs.push_back(         *(mat*)env->calllongmethod(                 env->getobjectarrayelement(jinputarray, i),                 getnativeaddr         )     ); }

for linux - saving same image in jpeg format , using imread access files.


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