C++ 使用 OpenCV putText 在图像上打印时出错
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Error when printing on an image using OpenCV putText
提问by bsidd
I am trying to print text on an image (cv::Mat) using cv::putText
我正在尝试cv::Mat使用以下方法在图像 ( )上打印文本cv::putText
string text = "Funny text inside the box";
int fontFace = FONT_HERSHEY_SCRIPT_SIMPLEX;
double fontScale = 2;
int thickness = 3;
cv::Point textOrg(10, 130);
cv::putText(img, text, textOrg, fontFace, fontScale, Scalar::all(255), thickness,8);
But this results in an access violation error at runtime. While
但这会在运行时导致访问冲突错误。尽管
cv::putText(img, "text", textOrg, fontFace, fontScale, Scalar::all(255), thickness,8);
results in "???text" being printed on the image. Any idea what could be going wrong?
导致“???text”被打印在图像上。知道可能出了什么问题吗？
回答by Julia Schwarz
I am not sure what the correct protocol for this is, but I had the exact same problem as @arbguy and my fix was because of @Vlad's comment. From @Vlad's comment I checked to see if I was using the correct (debug) libraries for my Debug build. I was not. Setting the libraries to the debug version of of libraries fixed my error and I was able to use cv::putText correctly. Here's what I did (using visual studio 2012):
我不确定正确的协议是什么，但我遇到了与 @arbguy 完全相同的问题，我的修复是因为 @Vlad 的评论。从@Vlad 的评论中，我检查了我的调试版本是否使用了正确的（调试）库。我不是。将库设置为库的调试版本修复了我的错误，我能够正确使用 cv::putText。这是我所做的（使用 Visual Studio 2012）：
Set all of my openCV .lib references to the "d.lib" versions. Your references will be different based on which libraries you are using but here are my references:
opencv_imgproc242d.lib opencv_core242d.lib opencv_highgui242d.libI then had to copy over the correct .dll libraries to my executable directory. I actually have a post-build step that copies the necessary .dll files into the binary directory. I also had to copy
"tbb_debug.dll"as well. This is located in%OPENCVDIR%\build\common\tbb\ia32\vc10(for my 32-bit build). the final list of .dll files I had to copy over was: opencv_imgproc242d.dll opencv_core242d.dll opencv_highgui242d.dll
将我所有的 openCV .lib 引用设置为“d.lib”版本。根据您使用的库，您的参考资料会有所不同，但这里是我的参考资料：
opencv_imgproc242d.lib opencv_core242d.lib opencv_highgui242d.lib然后我不得不将正确的 .dll 库复制到我的可执行目录中。我实际上有一个构建后步骤，将必要的 .dll 文件复制到二进制目录中。我也不得不复制
"tbb_debug.dll"。它位于%OPENCVDIR%\build\common\tbb\ia32\vc10（对于我的 32 位版本）。我必须复制的 .dll 文件的最终列表是： opencv_imgproc242d.dll opencv_core242d.dll opencv_highgui242d.dll
After doing this everything worked! NOTE: I am not a C++ expert so if anybody has a better suggestion for doing this I'm happy. Also, I am not sure how to properly credit @Vlad for actually solving this problem since he is the one that suggested the correct solution.
这样做后一切正常！注意：我不是 C++ 专家，所以如果有人有更好的建议，我很高兴。另外，我不确定如何正确地归功于@Vlad 实际解决了这个问题，因为他是提出正确解决方案的人。
