I am new to opencv . I am using cv::cvtColor(frame,frame,CV_BGR2GRAY); to convert rgb frame to gray but it gives linking error. All other basic functions eg reading and writing images and videos are working perfectly . Please help me which library I have to add
You cannot convert an image inplace if the number of channels is different. You have to use another matrix for that.
cv::Mat gray;
cv::cvtColor( frame, gray, CV_BGR2GRAY );
its giving an error newproject.obj : error LNK2019: unresolved external symbol "void __cdecl cv::cvtColor(class cv::_InputArray const &,class cv::_OutputArray const &,int,int)" (?cvtColor@cv@@YAXABV_InputArray@1@ABV_OutputArray@1@HH@Z) referenced in function _wmain
You have to link with imgproc library (opencv_imgproc).
Asked: 2013-09-13 10:53:36 -0600
Seen: 1,101 times
Last updated: Sep 13 '13
