| 摘要 |
<p>#CMT# #/CMT# The method involves generating acquisition vectors of structural characteristics of a region of a material element separate from a subject material element (1) and/or from the subject material element itself. All the acquisition vectors are analyzed using statistical methods to obtain a decomposition base formed of decomposition vectors. The vectors enable a representation of each acquisition vector in a form of an image vector of which each component corresponds to a contribution of a decomposition vector in the acquisition vector. #CMT# : #/CMT# Independent claims are also included for the following: (1) a method for extracting a random signature from a subject material element (2) a device comprising acquisition unit, processing unit and memory unit, the processing and memory unit that is adapted to implement the random signature extraction method (3) a computer program having a set of instructions for performing a base decomposition generating method. #CMT#USE : #/CMT# Used for generating a decomposition base which can be used to extract a random signature from a subject material element (claimed) e.g. dead biological origin material, organic origin material, mineral origin material, and mixture material. #CMT#ADVANTAGE : #/CMT# The method facilitates to provide a random signature with all the characteristics of a signature with unicity for each region of the subject material element, and the constituent components of the random signature vector are near-independent and near-equiprobable, even independent and equiprobable. The method enables to reduce an image-signal without any major algorithmic operation required after extraction, and increase the stability of the components for data securitization or accessing. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an installation or device for implementing methods for generating a decomposition base and for extracting a random signature from a material element. 1 : Subject material element 2 : Lamp 3 : Subject material element`s part 4 : Matrix sensor 5 : Camera 51 : Processing unit.</p> |
