How to use Opencv with Lazarus Free Pascal
lazarus / 8-Other

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dyfroedd · 2020-11-20 09:54

HI - Lazarus Free Pascal is an amazing tool that I recently discovered
where I can do almost everything except for using OpenCV for image
processing.

Can anyone tell me how I can use the OpenCV library with FreePascal +
LAzarus on a Mac - this is a questions that I ahve not ahd any answers
to yet.

Alternatively, I could write my own image processing subroutines for
doing these after accessing the webcam video stream but it would save
a lot of time using OpenCV.

Regards

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marcov · 2020-11-20 10:47

opencv is C++ so you need to flatten it to C to be callable.

This has been partially done with a windows DLL for Delphi, but afaik
some lazarusers also use it, e.g.

https://github.com/Laex/Delphi-OpenCV

So you would have to do something similar on Mac.

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Edson · 2020-11-20 15:48

I've ported many of https://github.com/Laex/Delphi-OpenCV to Lazarus
in: https://github.com/t-edson/LazarusOpenCV.

I tested it in only for Windows and Linux. I don't know about Mac.
Maybe it can help you.

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af0815 · 2021-05-05 14:15

I know this thread is a litte older :-)

Are there any updates about OpenCV for Lazarus ?

the link  http://blog.pucp.edu.pe/blog/tito/2018/07/28/opencv-con-
lazarus-instalacion-en-linux/ on t-edson github is not working anymore
- maybe shifted.

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Edson · 2021-05-05 15:35

Quote from: af0815 on May 05, 2021, 04:15:21 pmthe link 
http://blog.pucp.edu.pe/blog/tito/2018/07/28/opencv-con-lazarus-
instalacion-en-linux/ on t-edson github is not working anymore - maybe
shifted.

My blog has changed. That article is now in:
http://blogdetito.com/2018/07/28/opencv-con-lazarus-instalacion-en-
linux/

I'm not working in OpenCV by now. People only pay me for Web
development. nowadays.