Classifications

• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
  • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
  • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
  • G06V40/12—Fingerprints or palmprints
  • G06V40/1365—Matching; Classification

Definitions

• the subject of the invention elates to a procedure for the analysis and comparison of dermatoglyphic patterns during which basic symbol groups are created that include geometric characteristics from the information-carrying elements of the master patterns of various persons, e.g. minutiae points, and from the sum total of the individual basic symbol groups a comparison set is made, then from the information-carrying details of the pattern to be examined an examined symbol group is made that contains geometric characteristics equivalent to the geometric characteristics determined for the information-carrying elements of the master patterns, following this with the help of a comparison device the examined symbol group of the pattern under examination is compared with the basic symbol group of the comparison set, and the result of the analysis is put into a ranking order, an order of degree of relationship.
• basic symbol groups are created that include geometric characteristics from the information-carrying elements of the master patterns of various persons, e.g. minutiae points, and from the sum total of the individual basic symbol groups a comparison set is made, then from the information-carrying details of the pattern to be examined an examined symbol group is
• the basis of the idea behind the invention was formed by the recognition that if the geometric information used for the characterisation of the minutiae points is used as a structural factor when establishing the database that forms the basis of the evaluation and using these characteristics we set up a muti-embedded data network, then the task becomes solvable.
• a procedure according to the invention for the analysis and comparison of dermatoglyphic patterns - during which basic symbol groups are created that include geometric characteristics from the information-carrying elements of the master patterns of various persons, e.g. minutiae points, and from the sum total of the individual basic symbol groups a comparison set is made, then from the information-carrying details of the pattern to be examined an examined symbol group is made that contains geometric characteristics equivalent to the geometric characteristics determined for the information- carrying elements of the master patterns, following this with the help of a comparison device the examined symbol group of the pattern under examination is compared with the basic symbol group of the comparison set, and the result of the analysis is put into a ranking order, an order of degree of relationship, - which is based on the principle that during the creation of the comparison set identification codes are associated with the individual related dermatoglyphic patterns, and we also make the basic symbol groups conform to the identification codes, then after determining the number of geometric characteristics and their types we create an examination mask and following this we select element pairs from the information-car
• a further criterion of the procedure according to the invention may be that when preparing the examination mask three or more geometric characteristics are used, and as a primary geometric characteristic a direction characteristic is given, as a secondary geometric characteristic a distance characteristic and as a tertiary geometric characteristic a position characteristic is given.
• the direction characteristic used as the primary geometric characteristic is determined from the value of the angle of direction between the direction line connecting the analysed information-carrying element belonging to the basic symbol group of the master pattern and a neighbouring information-carrying element, and the tangent associated with the analysed information-carrying element of the pattern belonging to the analysed information-carrying element.
• the distance characteristic used as a secondary geometric characteristic is determined from the value of the spacing between the analysed information-carrying element belonging to the basic symbol group of the master pattern and a neighbouring information-carrying element.
• the position characteristic used as a tertiary geometric characteristic is determined from the direction angle value between the direction line of the analysed information-carrying element belonging to the basic symbol group of the master pattern and a neighbouring information-carrying element and the tangent associated with the neighbouring information-carrying element of the pattern belonging to the neighbouring information-carrying element.
• the most important advantage of the procedure according to the invention is that with its help the various dermatoglyphic patterns recorded at the scenes of events - even with the assistance of the usually applied computing devices - can be compared more quickly and simply with the master patterns stored in the databases.
• Another advantage is that the usual geometric-information comparison as a consequence of the novel solution used in the procedure becomes a much more easily controllable address code search, due to which it becomes possible to quickly examine the complete set of data, so there is no need to make special restrictions and exclusions, and it is even possible to take any geometric distortions into consideration, which at the end of the day makes the result of the comparison even more precise.
• Another advantage to be listed is that the data files can also be put together, integrated from storage units with small capacity that are possibly physically separated from each other. As a consequence the system can be gradually and continuously extended without the precision of the procedure being reduced.
• Figure 1 is a picture of the dermatoglyphic pattern used in the procedure according to the invention.
• Figure 2 is the block chart of the structure of the comparison set used in relation with the procedure
• Figure 3 is the picture of the pattern to be examined.
• Figure 1 shows an enlarged detail of the dermatoglyphic pattern 1 according to a print taken from the index finger of a person.
• the master, pattern "M” appearing on the dermatoglyphic pattern contains several minutiae points, each two of which forms an element pair "EP".
• the marked element pair "EP” is formed by the analysed information-carrying element "IN” and the neighbouring information-carrying element “I”.
• the given element pair "EP” has the direction characteristic 10a belonging to the basic symbol group 10, the distance characteristic 10b and the position characteristic 10c, as determinant geometric characteristics.
• the direction characteristic 10a is given by the direction angle " ⁇ " between the direction line “v” connecting the analysed information-carrying element "IN” and the neighbouring information-carrying element “I” and the tangent "ev” of the pattern "r” that bears the information-carrying element "IV” and that belongs to the analysed information-carrying element "IN”.
• the distance characteristic 10b is the length of the section of the direction line "v" between the analysed information-carrying element "IV and the neighbouring information-carrying element "I".
• the position characteristic 10c is given by the direction angle " ⁇ " between the direction line "v” positioned between the analysed information-carrying element "IN” and the neighbouring information-carrying element “I” and the tangent "e” of the pattern "r” that bears the neighbouring information-carrying element "I” and that belongs to the neighbouring information-carrying element "I".
• Every single "EP" element pair includes a basic symbol group 20, a basic symbol group 30 including a direction characteristic 10a, a distance characteristic 10b and a position characteristic 10c with content equal to that of the basic symbol group 10 - shown on figure 2 - which in essence forms the basis of the procedure.
• FIG. 2 shows the outline picture of the comparison set 100 to be used in th& procedure. It can be observed that each of dermatoglyphic pattern 1, dermatoglyphic pattern 2 and dermatoglyphic pattern 3 has an identification code la, identification code 2a and identification code 3 a, which in essence contain the identification data of the person providing the dermatoglyphic pattern 1, 2, 3. Also associated to this identification code la are the basic symbol group 10 and basic symbol group 20 belonging to the dermatoglyphic pattern 1, while the basic symbol group 30 is associated with the identification code 2a that identifies the dermatoglyphic pattern 2. For the sake of simplicity we show the set up and structure of the comparison set 100 only with the help of the basic symbol group 10, the basic symbol group 20 and the basic symbol group 30.
• the basic symbol group 10 containing the direction characteristic 10a, distance characteristic 10b and position characteristic 10c, the basic symbol group 20 containing the direction characteristic 20a, distance characteristic 20b and position characteristic 20c and the basic symbol group 30 including the direction characteristic 30a, distance characteristic 30b and position characteristic 30c are grouped in the primarily separated part-set LOli on the basis of the value of the primary geometric characteristic of the basic symbol group 10, the basic symbol group 20 and the basic symbol group 30, in other words on the basis of the value of the direction characteristics 10a, 20a, and 30a.
• the pattern to be examined 4 can be observed on figure 3, which is a fingerprint taken from the scene of a crime.
• the examined element pair "NEP1", the examined element pair “NEP2” and the examined element pair “NEP3” can be grouped, of which the examined element pair "NEP1" has an examined symbol group 41 identified with the examination code 41a, the examined element pair “NEP2” has an examined symbol group 42 identified with the examination code 42a, while the examined element pair "NEP3” has an examined symbol group 43 identified with the examination code 43 a.
• the examined symbol group 41, the examined symbol group 42 and the examined symbol group 43 contain the same primary, secondary and tertiary geometric characteristic values that were presented in connection with figure 1.
• the examination code 41a, examination code 42a and examination code 43 a conform in structure and formation to the address codes "Cl", "C2” and “C3” forming the comparison set 100.
• the comparison set 100 in the following way.
• the analysed information-carrying elements "IV” and coupling them each with neighbouring information-carrying elements "I” we created element pairs "EP”.
• the mask was put together from primary, secondary and tertiary geometric characteristics, where the primary geometric characteristic was provided by the direction characteristic 10a of the element pair "EP”, the secondary geometric characteristic by the distance characteristic 10b of the element pair "EP”, while the tertiary geometric characteristic was provided by the position characteristic 10c of the element pair "EP”.
• the basic symbol group 20 and the basic symbol group 30 were grouped on the basis of their primary geometric characteristic, that is their direction characteristic 10a, 20a, 30a, then on the basis of their secondary geometric characteristic, that is their distance characteristic 10b, 20b, 30b, then finally on the basis of their tertiary geometric characteristic, that is their position characteristic 10c, 20c, 30c, then with the help of this selection we arranged them in the completely separated part-sets lOXi.
• this procedure example this meant that in an individual completely separated part- set lOXi there were the basic symbol group 10 containing the direction characteristic 10a, the distance characteristic 10b and the position characteristic 10c, as well as further symbol groups containing a direction characteristic, distance characteristic and position characteristic the same as them.
• the procedure according to the invention can be used to advantage for the analysis, comparison and identification of dermatoglyphic patterns, especially in connection with the solving of crimes, and in connection with the determination of the perpetrator, and also in other areas, in authentication and identification systems as well.
• identification code dermatoglyphic pattern la identification code dermatoglyphic pattern 2a identification code dermatoglyphic pattern 3 a identification code pattern to be examined "VEP1" examined element pair "VEP2" examined element pair "VEP3" examined element pair

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• Engineering & Computer Science (AREA)
• Human Computer Interaction (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Multimedia (AREA)
• Theoretical Computer Science (AREA)
• Complex Calculations (AREA)
• Image Analysis (AREA)
• Management, Administration, Business Operations System, And Electronic Commerce (AREA)
• Collating Specific Patterns (AREA)

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Publications (2)

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Cited By (1)

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• 2002
  • 2002-09-03 HU HU0202922A patent/HU225399B1/hu not_active IP Right Cessation
• 2003
  • 2003-09-01 WO PCT/HU2003/000069 patent/WO2004027693A2/en not_active Ceased
  • 2003-09-01 AU AU2003263376A patent/AU2003263376A1/en not_active Abandoned

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