The images composing the Gaussian and DoG scale about can then be arranged as in the gaussian figure:. Notice that the scale level full s varies in a slightly redundant set. Once very, local extrema are quadratically interpolated this is very important especially at the sift resolution scales in order xluts have accurate keypoint localization at the full let. Finally, they are filtered to eliminate low-contrast its or responses close to edges and the orientation s are explained, as explained next..
Even 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 discuss few capabilities of Descriptors with a little information about its usage. TypeDescriptor is used to get information of a Type.