OpenCV Android with nonfree package (SURF) -

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i'm trying make app can detect similarity in pictures in android. i'm trying opencv , surffeaturedetector. in opencv it's not package nonfree , i'm trying go according tutorial https://sites.google.com/site/wghsite/technical-notes/sift_surf_opencv_android i'm getting problem:

description resource path location type make: * [obj/local/armeabi-v7a/libmixed_sample.so] error 1 appname c/c++

problem recipe target `obj/local/armeabi-v7a/libmixed_sample.so' failed appname line 588, external location: c:\nvpack\android-ndk-r9d\build\core\build-binary.mk c/c++

problem undefined reference 'cv::surf::surf(double, int, int, bool, bool)' appname line 54, external location: c:\nvpack\android-ndk-r9d\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\arm-linux-androideabi\bin\ld.exe: .\obj\local\armeabi-v7a\objs-debug\mixed_sample\jni_part.o: in function java_sk_appname_myopencvactivity_mojaskuska:jni\jni_part.cpp c/c++

problem undefined reference 'vtt cv::surf' appname line 107, external location: c:\nvpack\android-ndk-r9d\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\arm-linux-androideabi\bin\ld.exe: .\obj\local\armeabi-v7a\objs-debug\mixed_sample\jni_part.o: in function cv::surf::~surf():sdk\native\jni\include\opencv2\nonfree\features2d.hpp c/c++

problem undefined reference 'vtable cv::surf' appname line 107, external location: c:\nvpack\android-ndk-r9d\toolchains\arm-linux-androideabi-4.6\prebuilt\windows\arm-linux-androideabi\bin\ld.exe: .\obj\local\armeabi-v7a\objs-debug\mixed_sample\jni_part.o: in function cv::surf::~surf():sdk\native\jni\include\opencv2\nonfree\features2d.hpp c/c++ problem

i'm desperate, i'm trying 3 days make work lot of tutorials nothing working. android.mk:

local_path := $(call my-dir)  include $(clear_vars)  opencv_camera_modules:=on opencv_install_modules:=on #include ./sdk/native/jni/opencv-tegra3.mk include ./sdk/native/jni/opencv.mk  local_module    := mixed_sample local_src_files := jni_part.cpp local_ldlibs +=  -llog -ldl  include $(build_shared_library)   #pridane   include $(clear_vars) local_module    := nonfree_prebuilt local_src_files := libnonfree.so include $(prebuilt_shared_library)  include $(clear_vars) local_module    := opencv_java_prebuilt local_src_files := libopencv_java.so include $(prebuilt_shared_library)

i have no idea if have inserted libraries - in /libs/armeabi-v7a there builded nonfree libraries. when import in jni_part.cpp (where want use surf) #include <opencv2/nonfree/features2d.hpp>, it's ok without erros. please, me, if give me advice great. thank you.

the main problem android.mk.

it wasn't possible add 2 local_src_files (i don't know why, in i'm noob).

so final version:

local_path := $(call my-dir)  include $(clear_vars)  opencv_camera_modules:=on opencv_install_modules:=on include ./sdk/native/jni/opencv.mk  local_module    := mixed_sample local_src_files := jni_part.cpp \     nonfree_init.cpp \  precomp.cpp \  sift.cpp \  surf.cpp local_ldlibs +=  -llog -ldl include $(build_shared_library)  local_c_includes:= ./sdk/native/jni/include local_module    := nonfree local_cflags    := -werror -o3 -ffast-math local_ldlibs    += -llog

it weird problem, seems work fine.


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