keypoint

key +‎ point

keypoint (plural keypoints)

1. Part of a valley where the lower and flatter portion of the primary valley floor suddenly becomes steeper, used in computing a keyline for the efficient planning of water usage.
2. An important point in an image, used in computer vision systems when detecting objects etc.
   • 2016, Abhilash Srikantha, Juergen Gall, “Weakly Supervised Learning of Affordances”, in arXiv‎:

     We use a deep convolutional neural network within an expectation maximization framework to take advantage of weakly labeled data like image level annotations or keypoint annotations.

• kinotype