在安卓应用开发中使用带NDK的OpenCV

Question

我正在用NDK在Android测试facedetection程序。我关注了所有的讨论here。我将armeabi和armeabi-v7a中的所有OpenCV's库文件复制到我的project libs folder中。然后，我的Android.mk会更新为

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

OPENCV_INSTALL_MODULES  :=  on
OPENCV_CAMERA_MODULES   :=  off
OPENCV_LIB_TYPE         :=  STATIC
include C:\adt-bundle-windows-x86\OpenCV-2.4.9-android-sdk\sdk\native\jni\OpenCV.mk

LOCAL_SRC_FILES  := DetectionBasedTracker_jni.cpp
LOCAL_C_INCLUDES += $(LOCAL_PATH)
LOCAL_LDLIBS     += -llog -ldl

LOCAL_MODULE     := detection_based_tracker

include $(BUILD_SHARED_LIBRARY)

然后我转到命令窗口并输入

C:\facedetection\jni\include>javah -classpath ../../bin/classes;C:
\adt-bundle-windows-x86\sdk\platforms\android-18\android.jar -o DetectionBas
edTracker_jni.h org.opencv.samples.facedetect.FdActivity
Error: Class org.opencv.android.CameraBridgeViewBase could not be found.

那么错误就是Class org.opencv.android.CameraBridgeViewBase could not be found。这个错误的原因可能是什么？谢谢

Answer 1

您提供的\斜杠错误。您需要改用这个/斜杠。

请更改您的以下行

include C:\adt-bundle-windows-x86\OpenCV-2.4.9-android-sdk\sdk\native\jni\OpenCV.mk

至

include C:/adt-bundle-windows-x86/OpenCV-2.4.9-android-sdk/sdk/native/jni/OpenCV.mk