What are CV_Luv2LBGR and CV_Lab2LBGR and how to use them?
I cam upon the undocumented color conversion codes: CV_Luv2LBGR
and CV_Lab2LBGR
(and their LRGB
siblings). Apparently, they should return the L
channel in addition to the BGR
channels.
However, I cannot seem to get them to work, I suspect the code actually ignores this and simply returns BGR
.
How can I use them and why aren't they documented?
the fastNiDenoising code seems to use those