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how to install libopencv-imgcodecs-dev on ubuntu?

asked 2018-04-24 05:46:38 -0500

tengfei han gravatar image

updated 2018-04-26 15:32:17 -0500

when I tried to built my project using Kdevelop, some evident errors was displayed at "build"tools view. /home/htf/slambook/ch7/triangulation.cpp: error: ‘CV_FM_8POINT’ was not declared in this scope /home/htf/slambook/ch7/triangulation.cpp: error: ‘CV_LOAD_IMAGE_COLOR’ was not declared in this scope

the opencv version is 4.0.0, so I was thinking these errors should not have appeared.Then I planned to installed some packages to solve this problem,unfortunately, I do not know where could I find the package named imgcodecs. if you have some good ideas or helpful approaches, please contact me as soon as you can , Thank you very much.


Mat fundamental_matrix; fundamental_matrix = findFundamentalMat ( points1, points2, CV_FM_8POINT ); cout<<"fundamental_matrix is "<<endl&lt;&lt; fundamental_matrix&lt;<endl;<="" p="">


Mat img_1 = imread ( argv[1],CV_LOAD_IMAGE_COLOR ); Mat img_2 = imread ( argv[2],CV_LOAD_IMAGE_COLOR);

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answered 2018-04-24 05:54:53 -0500

berak gravatar image

updated 2018-04-24 07:01:41 -0500

most flag names were changed in opencv3 already, so try with cv::IMREAD_COLOR and cv::FM_8_POINT

(in general: try to avoid using the old C-API flags with CV_ prefix. this seems to be NOT an install problem, but one about outdated code / usage)

also, there is no such thing as libopencv-imgcodecs-dev

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Asked: 2018-04-24 05:46:38 -0500

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Last updated: Apr 24 '18