Regarding opencv

Can somebody suggest me a good place where the various objects documented in opencv are discussed with certain clarity
Thanks

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I’m not sure what kind of clarity you want, specifically, but

  1. start at the homepage,
  1. look through the available reference:

http://atduskgreg.github.io/opencv-processing/reference/

  1. if you have further questions about the objects / methods, look them up in the original OpenCV reference for 2.4.5 – this is much more comprehensive.

https://docs.opencv.org/

…and of course, there are example sketches and tutorials, both for the processing opencv specifically and for opencv in general.

See Bryans Blog and search for OpenCV.
http://www.magicandlove.com/blog/?s=OpenCV

Good source for how to use more recent versions of OpenCV in Processing.
Latest available on Bryans page is OpenCV 4.0.0
More work than with Gregs implementation, but a good way to learn to implement own libraries and it give you a deeper insight into OpenCV with related documentation which you may find on the openCV webpage.

At least there are not so many people using OpenCV in Processing. Which I found out while learning how to implement a simple lane detection.