skip to content »

ik-kem.ru

Validating newly compiled units no source code available type

validating newly compiled units no source code available type-88

Such 2-dimensional validation methods for personal signatures have, however, an uncertainty which among others is determined by the fact that the pattern a personal signature forms in two dimensions will vary each time the signature is written and this uncertainty is sufficiently large that the validation method based on 2-dimensional pattern recognition not always with certainty may decide whether a genuine or forged signature is present. The comparison comprises registering both for the test signature and the verified signature signals which represent forces in three directions when these signatures are generated.

validating newly compiled units no source code available type-76validating newly compiled units no source code available type-7validating newly compiled units no source code available type-51

A third data stream D3 for the contact of said writing device with said writing surface, at said writing tip, as a function of time, and a fourth data stream D4 for a clock function.Said six degrees of freedom being given by a linear movement along an x axis, a y axis and a z axis respectively as well as by rotation about said x axis, said y axis and said z axis respectively, generating on the basis of the detected movement of said writing device respectively a first data stream D1 for the movement for said writing device with only two degrees of freedom as a function of time (2-dimensional tracking).These two degrees of freedoms being given by the linear movement along said x axis and the linear movement along said y axis.The method for registering, analyzing and validating the hand-written personal signature requires that the signature be written in an x, y plane with a writing instrument which has a multiaxis movement detector at its end.The multiaxis movement detector detects the movement of said writing device as a function of time and with six degrees of freedom.In order to obviate this disadvantage it has been proposed either to register forces which occur during writing of hand-written personal signature or to register accelerations and pressures which occur during the registration of the signature. The registered test signature's signals are divided into two equal parts and repeated comparisons are made between these, first without displacement and then with relative displacement and thereafter by increasing the mutual relative length of the parts and then finally by reducing the mutual relative length of the parts, whereupon the highest correlation values are found for all comparisons. The validation and the verification of the test signature in this case become a relatively complicated process, which demands a correspondingly complicated specially designed apparatus in order to be realized.

Further there is from GB patent application 2011693 (Herbst & Liu) known an apparatus for verifying a signature, wherein a pen which represents accelerations in the x and y directions and further delivers pressure signals to analog/digital converters which feed the signals to respective signature comparator units, is used.

A method for compilation of a database MBD with authenticated hand-written personal signatures which are used for validation of the authenticity of newly registered corresponding personal signatures, characterized by registering a signature on a writing surface substantially defined in an x,y plane by means of a writing device which at one end has provided a writing tip for contact with said writing surface and further comprises a multiaxis movement detector, detecting the movement of said writing device as function of time and with six degrees of freedom, said six degrees of freedom given by a linear movement along an x axis, a y axis and a z axis respectively, as well as by rotation about said x axis, said, y axis and said z axis respectively, generating on the basis of the detected movement of said writing device respectively a first data stream D1 for the movement of said writing device with only two degrees of freedom as function of time (2-dimensional tracking) said two degrees of freedom given by the linear movement along said x axis and the linear movement along said y axis, a second data stream D2 for the movement of said writing device with all six degrees of freedom as function of time (6-dimensional tracking)| a third data stream D3 for the contact of said writing device with said writing surface at said writing tip as function of time and a fourth data stream D4 for a clock function, said clock function providing a time scale whereto the detection of the movement and the three first data streams D1, D2, D3 are referred, transmitting said data streams D1, D2, D3, D4 to a data processing device connected with said writing device, transforming data from said first data stream D1 into a 2-dimensional vector format VF1 which is stored in a first database file DF-A, transforming data from said second data stream D2 into a 3-dimensional vector format VF2 which is stored in a second database file DF-B, transforming data from said third data stream D3 into a table format TF1 which is stored in a third database file DF-C and transforming data from said fourth data stream D4 into a start/stop point of time format and a time duration format TF2 which are stored in a fourth database file DF-D, said database files DF-A, DF-B, DF-C, DF-D being contained in the database MDB which is stored in said data processing device and a possible further central data processing device.6.

A method for compilation of a database MDB with authenticated handwritten personal signatures which are used for validation of the authenticity of newly registered corresponding signatures, characterized by registering the signature a repeated number of times on a writing surface substantially defined in an x,y plane by means of a writing device which at one end has provided a writing tip for contact with said writing surface and further comprises a multiaxis movement detector, detecting the movement of said writing device as function of time and with six degrees of freedom, said six degrees of freedom being given by a linear movement along an x axis, a y axis and a z axis respectively as well as by rotation about said x axis, said y axis and said z axis respectively generating on basis of the detected movement of said writing device respectively a first data stream D1 for the movement for said writing device with only two degrees of freedom as function of time (2-dimensional tracking), said two degrees of freedoms being given by the linear movement along said x axis and the linear movement along said y axis, a second data stream D2 for the movement of said writing device with all six degrees of freedom as function of time (6-dimensional tracking), a third data stream D3 for the contact of said writing device with said writing surface at said writing tip as function of time, and a fourth data stream D4 for a clock function, said clock function providing a time scale whereto the detection of the movement and the three first data streams D1, D2, D3 are referred, transmitting said data streams D1, D2, D3, D4 to a data processing device connected with said writing device, transforming data from said first data stream D1 into a 2-dimensional vector format VF1 which is stored in a first database file DF-A, transforming data from said second data stream into a 3-dimensional vector format VF2 which is stored in a second database file DF-B, transforming data from said third data stream D3 into a table format TF1 which is stored in a third database file DF-C, transforming data from said fourth data stream D4 into a start/stop point of time format and a time duration format TF2 which are stored in a fourth database file DF-D, said database files DE-A, DF-B, DF-C and DF-D being contained in the database MDB which is stored in said data processing device and a possible further central data processing device, generating said 2-dimensional vector format VF1, said 3-dimensional vector format VF2, said table format TF1 and said start/stop point of time format and time duration format TF2 as respective average formats with an upper and lower tolerance limit, said upper and lower tolerance limits being determined on the basis of scatter values for repeated registrations of the personal signature and related to said respective average format, and for each format as function of time generating a scatter function on the basis of scatter values for the format, said average formats with the accompanying tolerance limits and scatter functions being stored in said database files DF-A, DF-B, DF-C and DF-D respectively.8.

The invention relates to a method for registration, analysis and validation of a hand-written personal signature.

The invention also relates to methods for compilation of a database MDB with authenticated hand-written personal signatures which are used for validation of the authenticity of newly registered corresponding personal signatures, wherein a registration of a signature is executed a repeated number of times on a writing surface substantially defined in an x, y plane by means of a writing device which at one end has provided a writing tip for contact with said writing surface and further comprises a multi-axis movement detector, wherein the registration comprises steps for detecting the movement of said writing device as a function of time and with six degrees of freedom.

A method according to claim 5 or 6, characterized by using a pressure sensitive display device as the writing surface, generating the first data stream D1 by the pressure sensitive display device by the contact of the writing tip with said writing surface and representing the 2-dimensional pattern of the signature in the x,y-plane formed by the writing surface, transforming the data from the second data stream D2 into a virtual 2-dimensional signature on a vector format VF3, the vector format VF I for said first data stream D1 and said vector format VF3 for said virtual 2-dimensional signature both being stored in the first database file DF-A, and from said vector format VF1 for said first data stream D1 and said vector format VF3 for said virtual 2-dimensional signature generating a differential vector format ΔVF which likewise is stored in said database file DF-A.9.