Question

我切换到新的opencv 3.0，因为它更新，功能更多，但我遇到了问题。当我编译完全适用于2.4.8版本的旧代码时，它找不到一些函数：

error: ‘resize’ was not declared in this scope
error: ‘VideoCapture’ was not declared in this scope
error: ‘namedWindow’ was not declared in this scope
error: ‘cvtColor’ was not declared in this scope
error: ‘imshow’ was not declared in this scope
error: ‘Sobel’ was not declared in this scope

这里以一小段代码为例：

TEST.CPP：

#include <opencv/highgui.h>
#include <opencv/cv.h>

using namespace cv;

int main( int argc, char** argv ) 
{
    IplImage* imgX;
    IplImage* img = cvLoadImage( argv[1] );

    Sobel(img, imgX, CV_32F, 1, 0, 1);

    cvNamedWindow( "Example1", CV_WINDOW_AUTOSIZE );
    cvShowImage( "Example1", imgX );    
    cvWaitKey(0);
    cvReleaseImage( &imgX );
    cvDestroyWindow("Example1");
}

CMakeList.txt：

cmake_minimum_required (VERSION 2.6)
project (Test)
find_package( OpenCV REQUIRED )
add_executable(Test test.cpp)
target_link_libraries( Test ${OpenCV_LIBS} )

并输出：

Scanning dependencies of target Test
[100%] Building CXX object CMakeFiles/Test.dir/test.cpp.o
/home/kairat/Dropbox/ComputerVision/Codes/test/test.cpp: In function ‘int main(int, char**)’:
/home/kairat/Dropbox/ComputerVision/Codes/test/test.cpp:11:34: error: ‘Sobel’ was not declared in this scope
  Sobel(img, imgX, CV_32F, 1, 0, 1);
                                  ^
CMakeFiles/Test.dir/build.make:54: recipe for target 'CMakeFiles/Test.dir/test.cpp.o' failed
make[2]: *** [CMakeFiles/Test.dir/test.cpp.o] Error 1
CMakeFiles/Makefile2:60: recipe for target 'CMakeFiles/Test.dir/all' failed
make[1]: *** [CMakeFiles/Test.dir/all] Error 2
Makefile:75: recipe for target 'all' failed
make: *** [all] Error 2

在这种情况下我能做些什么？

Answer 1

索贝尔（img，imgX，CV_32F，1,0,1）;这是sobel函数的c ++版本。

你应该使用c版本的sobel功能即cvSobel（img，imgX，1,0,1）;因为你正在处理C结构IPLimage。注意：C版本的opencv函数通常以“cv”开头。

否则使用此功能将IPLimages转换为Mats Mat src = cvarrToMat（img）然后使用Sobel（src，srcX，CV_32F，1,0,1）; 建议通过处理Mats来使用c ++函数，它具有更多的优点，如输出的自动内存分配/重新分配和自动释放内存。

未声明Opencv函数

1 个答案: