Reading from the documentation, it feels like the calcOpticalFlowPyrLK function implements the Lucas-Kanade algorithm. However, browsing on the internet there are many mentions to the "OpenCV's KLT tracker" (like here).
It feels like LK and KLT denominations are used interchangeably, but shed confusion (at least to me) on what's actually implemented on OpenCV.
So, what is actually implemented?
