A METHOD OF PROVIDING A FEATURE DESCRIPTOR FOR DESCRIBING AT LEAST ONE FEATURE OF AN OBJECT REPRESENTATION

摘要

A method of providing a feature descriptor for describing at least one feature of an object representation comprises the steps of providing an original feature descriptor comprising at least one vector or a plurality of K vectors having equal sum of vector entry values and each vector having H entries, projecting each vector on a lower dimensional space of size H-1 or lower to gain a projected feature descriptor comprising projected vectors of H-1 entries or lower, such that it is possible to obtain a similarity measure between two projected feature descriptors equal to the similarity measure between the two corresponding original feature descriptors, and providing the projected feature descriptor as a lossless compressed feature descriptor.