OpenCV tutorial 3: how to compile OpenCV from source

In this video we compile OpenCV from source! Enjoy!

[sutops]

I was following this tutorial - (my setup: Visual Studio 2010 SP1 and Qt Creator 5.2.1 with Qt 4.8.6). Despite the chosen OpenCV 2.3.1 in this video, I was using the latest version of OpenCV 2.x (OpenCV 2.4.9). Building the code no error was produced, but when I ran the code a message appeared 'program can't start because of missing QtGuid4.dll ' . 
I followed the example in this tutorial for setting the bin directory in OS Path variable, but this time I add [drive_name]:\Qt\4.8.6\bin where the missing *.dll file is located. Rebuild the system and the code now works... Good & useful tutorial. Thanks for sharing

[qzorn]

Great stuff, as I watch the "18F4550videos" I think about fixing other software project opencv c++ bugs.My new learning curve is to make the Tracker Project work on the Beaglebone Black Debian OS circuit-board as a stand alone. Have you ever worked with the Beaglebone Black? Thank you.

[waleedqk]

Great tutorials, helped so much, thanks
Any chance you could also show how to add cvblob to OpenCV. Been trying and failing at that miserably.

[horrogue]

Hey, thanks for the vids. Any idea why I fail during the build of the solution in visual studio?  I get several such errors : fatal error LNK1104: cannot open file  . Could it be because i have wrong enviroment variables? I do not see any of them being set in this video so, maybe they are considered prerequisite? Trying to build 2.4.9 version with cuda support, any help would be appreciated, thanks.

[poojashroff]

Got a debug error saying could not find 'opencv_core231d.dll'. I searched for it in OpenCV-2.3.1 directory and copy pasted it to my system32 folder which seemed to solve the problem. I copied the other opencv .dll files as well. Now when I try to debug it gives me an error saying "opencv_highgui231d.dll is not a valid Windows image. Please check this against your installation diskette."
I'm using Windows XP and Visual C++ 2010. Any ideas on where I'm going wrong?
Any help would be appreciated.

[arbitrarysolutions]

I tried to use the 2.4.2 version. It went fine during this tutorial, however i faced problems compiling it tutorial 5 because of dependencies of nvidia graphics drivers in 2.4.2.

Doing this again in 2.3.1 to avoid problems

[shrooqi]

Sir
nice work
I hope you help me I have problem
this show up when I use CMake 2.8.8
"Invalid license data. Reinstall is required."

[poojashroff]

Deleted the copy pasted files from the system32 folder and ran program again. The program runs but still several dlls are missing. :| The object isn't getting tracked.

[LeoMakotoMito]

Nice video! But I got an error (actually 621 errors), when trying to compile the "opencv_highgui.sln" project, everything else worked. Can you help me, please?

[wisesoar]

Does any one know what might be good source(s) to read and understand all those ideas and concepts of PATH, environmental variables, make, build, linker and library. I am not a computer science major and don't have these backgrounds. I can write code and program in C/C++/C#, but every time if i wan to use some opensource code or library, I have a lot of trouble to do the set up. Could someone suggest me some readings or key words, so i can learn these concepts from fundamental. Highly Appreciate!!

[Will]

Thanks you were really helpful would you or anyone here have any idea on how to run OpenCV on a raspberry Pi ?

[BOHICAMAN]

Everything worked fine TILL I clicked on the Qt box (in the Red check box area) during the compile. I have Qt 5.3 and the OpenCV file requires Qt 4. Duh! Would have been nice if somebody said it DOES NOT WORK.