What is described by the following?

• It is one of the marker-less tracking methods. 
• Lucas-Kanade method is used to compute this.
• It is the apparent motion of the image projection of a physical point in an image sequence, where the velocity at each pixel location is computed under the assumption that projection’s intensity remains constant.

Which is NOT true about OpenCV?

Who coined the term "augmented reality"?

Which is NOT one of the advantages of using computer vision for tracking? 

For augmented realty (and augmented virtuality), a tracking mechanism is needed in addition to all the VR techniques, algorithms, interaction devices, etc. What techniques are applied to data acquired using a video camera for the tracking? 

Which is NOT one of the methods for marker-less tracking? 

What kind of AR is illustrated by the following diagram?

What is the technique used by robots and autonomous vehicles to build up a map within an unknown environment (without a priori knowledge), or to update a map within a known environment (with "a priori knowledge from a given map), while at the same time keeping track of their current location.

Which is NOT true about markers-based tracking?

What is the technique for finding areas of an image that are similar to a patch (smaller image)?