Hello.I do every things that you said in video and pdf file.but after build solution in visual studio , I get 638 error about opencv_highgui and then it don,t create open_highgui.dll . so when I want to run CannyStill program , Iy error "open_highgui.dll" missed.
Look at this image:
https://i.imgsafe.org/e7da4154ee.jpg
also here are all errors:
http://m.uploadedit.com/ba3s/1466859019730.txt
more errors are about LINKER and QWidget.
what should I do?