Request: Support for OpenCL

[reubenfirmin]

Description of Problem & Solution
Since OpenCV don't have a clean build that includes CUDA (and the maintainers seem pretty dismissive towards requests that they do so), please take a look at supporting OpenCL (support for which is built into the pip distributed OpenCV).

Performance of dvr-scan is currently prohibitive for me for my needs, so I'd love to see out of the box GPU support.

Thanks!

[Breakthrough]

In the long term I'm most open to different processing methods other than CUDA so long as distributing the software is doable. Any code examples or similar applications in Python would be most helpful, especially with regards to distributing the resulting executables.

[ThatCoffeeGuy]

I've been suffering with trying to build openCV with CUDA support for multiple hours now on a generic ubuntu 22.04 system. I don't know what I'm doing wrong, I'm going from error to error. The building procedure is simply horrible.

I'd very much support looking into either a bundled, working CUDA version (or even a working tutorial...) or OpenCL.