C++ 不能使用 OpenCV 命名空间
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Can't use OpenCV namespace
提问by Outback
I'm trying to install OpenCV and thought I was done... But this has errors:
我正在尝试安装 OpenCV 并认为我已经完成了......但这有错误：
#include <cv.h>
#include <highgui.h>
using namespace cv;
int main( int argc, char** argv )
{
}
Error: Symbol 'cv' could not be resolved
Error: Symbol 'cv' could not be resolved
But apparently the two includes include just fine. The code itself is taken from an example on OpenCV.org so I assume the code is right. And I'm too n00b to diagnose what the problem is, only vaguely knowing what namespaces are...
但显然这两个包括就很好。代码本身取自 OpenCV.org 上的一个示例，所以我认为代码是正确的。而且我太n00b无法诊断问题是什么，只能模糊地知道命名空间是什么......
回答by sansuiso
You are not including the C++ headers but the C ones.
You should try to include files such as highgui.hpp, or the global opencv2.hppinstead.
您不包括 C++ 头文件，而是包括 C 头文件。您应该尝试包含诸如highgui.hpp, 或 global 之类的文件opencv2.hpp。
If these files do not exist, you have to upgrade for a more recent version of the library.
If they exist but your compiler can't find them, you have to use the -I/path/to/includeoption when compiling.
如果这些文件不存在，您必须升级库的更新版本。如果它们存在但您的编译器找不到它们，则必须-I/path/to/include在编译时使用该选项。
回答by PurpleAlien
You sure you're using a C++ compiler and not a C compiler? The code compiles fine from command line, e.g.,:
你确定你使用的是 C++ 编译器而不是 C 编译器？代码从命令行编译得很好，例如：
g++ -o opencv opencv.cpp -I/usr/include/opencv
Johan.
约翰。
回答by Marco Ruiz
You should include in the first space /usr/local/include in GCC C++ Compiler. See the next picture.
您应该在 GCC C++ 编译器的第一个空间 /usr/local/include 中包含。看下一张图。
回答by Outback
I should have mentioned that I a running Linux. The problem was that I didn't have the library path configured. See section "Path Configuration" in this guide: http://opencv.willowgarage.com/wiki/InstallGuide_Linux
我应该提到我正在运行 Linux。问题是我没有配置库路径。请参阅本指南中的“路径配置”部分：http: //opencv.willowgarage.com/wiki/InstallGuide_Linux
