TypeDescriptor is a certain sealed class which makes the starting point of the API. It descriptors information of the object in terms of Properties, Srx, Events, etc. Part though the basic usage of TypeDescriptor is to get metadata of an object, yet it also exposes features to extend the object on the fly. Let us now sample few capabilities of Descriptors with a little information about its static..
Notice that the scale level index s varies in a slightly redundant set. Once extracted, local extrema are quadratically interpolated this is very important especially Casusl the lower resolution scales in order to have accurate keypoint localization at the full resolution. Finally, they are filtered to eliminate low-contrast responses or responses close to edges and the orientation s are assigned, as explained next.
Peaks which are too short may have been generated by noise and are discarded.