difference between multiple OpenCV documentation pages

Question

I've been using OpenCV for 6 months. However, the following question just came up to my mind:

What is the difference between the follwing OpenCV pages, are they all refered as official?

1- http://opencv.jp/opencv-2.1_org/py/camera_calibration_and_3d_reconstruction.html#findhomography

2- https://opencv.org/

3- https://docs.opencv.org/master/d1/de0/tutorial_py_feature_homography.html

Thanks in Advance

user_6436977 · Answer

This got me wondering; never really thought about this for opencv.jp though I have used it in the past.

I've checked the about section of the page, roughly translated into English (by google) it says:

opencv.jp is an unofficial site created by Japanese opencv users. If you have any opinions or suggestions regarding the contents of this site, please contact the forum on the site or the following e-mail address.

So in order:

Unofficial (Japanese) site created by OpenCV users, it mostly contains documentation with code examples
This is the official general homepage
Official documentation for 4.5, as @Chris Luego already pointed out in the comments

difference between multiple OpenCV documentation pages

1 Answers