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imshow reports runtime error after rebuilding opencv project with 'WITH_OPENGL' is on

asked 2013-08-10 01:55:13 -0600

CyberK gravatar image

updated 2013-08-10 01:57:31 -0600

I turned on WITH_OPENGL using CMake, and rebuild the project. imshow() reports runtime error. How can I fix this problem??

int main(int argc, const char * argv[]) { cv::Mat I = cv::imread("D:/PyramidPattern.jpg"); cv::imshow("test",I); return 0; }

runtime error: OpenCV Error: OpenGL API call (Can't load OpenGL extension [glGenerateMipmap]) i n unknown function, file C:\OpenCV\modules\core\src\gl_core_3_1.cpp, line 141

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answered 2013-08-10 03:11:41 -0600

berak gravatar image

you need to call


before imshow()

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Thank you! Problem solved!

CyberK gravatar imageCyberK ( 2013-08-10 11:57:20 -0600 )edit

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Asked: 2013-08-10 01:55:13 -0600

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Last updated: Aug 10 '13