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I think the opencv/-headers are just legacy and should be replaced by the opencv2-headers. If you have a look at the old headers, they just include the new opencv2-headers. I can compile your code with these headers:

#include <opencv2 core="" core.hpp=""> #include <opencv2 highgui="" highgui.hpp="">

g++ foo.cpp -lopencv_core -lopencv_highgui

But there are also a logical error: You use argv[2] before checking if argc is 2.

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updated 2014-09-08 01:42:51 -0500

berak gravatar image

I think the opencv/-headers are just legacy and should be replaced by the opencv2-headers. If you have a look at the old headers, they just include the new opencv2-headers. I can compile your code with these headers:

#include <opencv2 core="" core.hpp="">

   #include <opencv2 highgui="" highgui.hpp="">

<opencv2/core/core.hpp> #include <opencv2/highgui/highgui.hpp>

g++ foo.cpp -lopencv_core -lopencv_highgui

-lopencv_highgui

But there are also a logical error: You use argv[2] argv[1] before checking if argc is 2.