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openCV3 - Python Docs Hello: I'm a bit lost. Recently switched to openCV 3.4.1 for Python 3.6.5. I previously used 2.4

openCV3 - Python Docs Hello: I'm a bit lost. Recently switched to openCV 3.4.1 for Python 3.6.5. I previously used 2.4

openCV3 - Python Docs Hello: I'm a bit lost. Recently switched to openCV 3.4.1 for Python 3.6.5. I previously used 2.4

openCV3 - Python Docs Hello: I'm a bit lost. Recently switched to openCV 3.4.1 for Python 3.6.5. I previously used 2.4

I have subsequently learned that I do have to rebuild the openCV libraries to eliminate this mismatch error. However, this may be specific to my particular environment: Windows 7 SP1, VS2012 & CMake 3.2.1

Well after a week of effort and prowling the vast information provided by others I was finally able to build openCV 3.0 Beta with Python 3.4.3 with 64 bit versions directly from the Python & openCV sites

My environment is Windows 7 w/ SP1, CMake 3.2.1 and VS2012.

Tips: Not anyone post was found to be 100% accurate and/or match my specific setup - of course. Most confusing was that even though using VS2012: I had to reference VS 2011 2012 Win64 as the compiler in Cmake. I think this enables using the correct Platform Toolset VS 2012 (v110) in the VS setup for the openCV build. Also I had to ref my python3 dirs instead of python2 dirs in CMakes python2 variables definitions or else it would always be built with Python2 for the openCV build even though I had python3 variables defined too. I copied my resulting /install/.. dirs from my target dir for the build over to my Beta3.0\opencv dir. This becomes the pathway dir to ref in VS2012 for subsequent project builds i.e. Additional Include dirs & Additional Library dirs

Obviously I am a Newbie with much to learn!

Thank you Tuannhtn for your kind response.

Hello:

Can I reference Python 3.4.3 for use in openCV 3.0Beta? If not what is the latest Python version I can use?

HJ

Hello:

I get a series of Linker errors trying to follow the procedure to install 3.0 Beta on Windows 7 using VS2012:

opencv_imgcodecs300.lib(rgbe.obj) : error LNK2038: mismatch detected for '_MSC_VER': value '1800' doesn't match value '1700' in TestIt.obj etc.

How do I get the distributed 3.0Beta libraries and my simple TestIt program to have matching _Msc_Ver values?

HJ

I am developing a an application that uses Python & openCV to detect small changes to camera scene. It would help if I could add the effect of a virtual light (e.g Phong) originating from behind the scene. Does anyone know if this can be done within openCV? Thanks.

Has anyone extended openCV functionality to include a virtual light source (Phong light model) to enhance an image.

I should have shared that I am using openCV in Python.

Hello and thank you for your reply. Unfortunately I am using openCV in Python as I don't know C.

How do I get values defined within my MouseCallBack function to be accessible to separate Functions, Objects & Modules that are part of larger application? e.g. I tried putting my MouseCallback function within an upper level function and tried to use Return to get the values I wanted. I also tried putting it within a Class. Both scenarios had Global variables defined for the values I needed but I am not able to get the values I need to pass later on to other functions or objects in the larger application.

Can the template be of a smaller scale than the source image in the matchTemmplate function?

Is it possible to display VideoCapture frames directly into a Tkinter frame?

Is the 3.0 Alpha release for Windows x64 or x86(32bit) or both?

Is there a more cost effective means to install versus having to buy MS Visual Studio?