構建opencv android ndk項目

Question

我正在嘗試構建opencv android ndk項目。 我在opencv文件夾和Android.mk中的示例中進行了查找，如下所示：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

OPENCV_LIB_TYPE:=STATIC
OPENCV_INSTALL_MODULES:=on

include ../includeOpenCV.mk
ifeq ("$(wildcard $(OPENCV_MK_PATH))","")
    #try to load OpenCV.mk from default install location
    include $(TOOLCHAIN_PREBUILT_ROOT)/user/share/OpenCV/OpenCV.mk
else
    include $(OPENCV_MK_PATH)
endif

LOCAL_MODULE    := native_sample
LOCAL_SRC_FILES := jni_part.cpp
LOCAL_LDLIBS +=  -llog -ldl

include $(BUILD_SHARED_LIBRARY)

看來我需要更改路徑以適合我的PC，但我不確定這部分是什么意思：

include ../includeOpenCV.mk
ifeq ("$(wildcard $(OPENCV_MK_PATH))","")
    #try to load OpenCV.mk from default install location
    include $(TOOLCHAIN_PREBUILT_ROOT)/user/share/OpenCV/OpenCV.mk
else
    include $(OPENCV_MK_PATH)
endif

我有一個使用copencv函數的cpp文件。

Answer 1

您必須將包含路徑更改為將opencv-android sdk解壓縮到的目錄。

更改

OPENCV_LIB_TYPE:=STATIC
OPENCV_INSTALL_MODULES:=on

include ../includeOpenCV.mk
ifeq ("$(wildcard $(OPENCV_MK_PATH))","")
    #try to load OpenCV.mk from default install location
    include $(TOOLCHAIN_PREBUILT_ROOT)/user/share/OpenCV/OpenCV.mk
else
    include $(OPENCV_MK_PATH)
endif

至

 OPENCV_LIB_TYPE:=STATIC
 OPENCV_INSTALL_MODULES:=on

// Location in which you have extracted your opencv-android-sdk 

 include C:\OpenCV-2.4.6-android-sdk-r2\OpenCV-2.4.6-android-sdk\sdk\native\jni\OpenCV.mk

 // remove this previously existing macro once you have set your absolute path