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Classification

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  • can i have some example of final classification of fingerprint...thanks...
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  • 1.
  • 2. CLASSIFICATION CODES
    NCIC
    Henry
    IAFIS
  • 3.
  • 4.
  • 5.
  • 6. NCIC CLASSIFICATION
  • 7. IAFIS CLASSIFICATION
  • 8. HENRY CLASSIFICATION
  • 9. HENRY CLASSIFICATION
    Consists of the following:
    PRIMARY
    SECONDARY
    SMALL LETTERS
    SUB-SECONDARY
    SMALL LETTERS
    MAJOR
    FINAL
    KEY
  • 10. HENRY CLASSIFICATION
    PRIMARY
    A numeric value is assigned to each of the ten finger blocks, ranging from 16-2.
    When a whorl appears, it assumes the value of that finger block. All other pattern types are disregarded when computing the primary.
  • 11. HENRY CLASSIFICATION
    PRIMARY
    The Numerator = the total of fingers 2,4,6,8,10, plus one.
    The Denominator = the total of fingers 1,3,5,7,9, plus one.
    The Primary is placed in the center of the classification line.
  • 12. HENRY CLASSIFICATION
    SECONDARY
    • The Secondary is obtained from the pattern types present in the index fingers.
    • 13. Finger #2 is the Numerator.
    • 14. Finger #3 is the Denominator.
    • 15. The Secondary is placed on the classification line to the right of the Primary.
  • HENRY CLASSIFICATION
    Capital letters are used to represent the Secondary. The following letters are used:
    Plain Arch – A
    Tented Arch – T
    Radial Loop – R
    Ulnar Loop – U
    All Whorls – W.
  • 16. HENRY CLASSIFICATION
    Small Letters consist of capital “A,” small “a,” capital “T,” small “t,” or small “r” ONLY.
    Small letters appear on the classification line as their relative position to the index fingers.
    ALL small letters MUST be represented in the classification formula.
    SMALL LETTERS
  • 17. HENRY CLASSIFICATION
    SMALL LETTERS
    Dashes (-) are used in the formula to indicate an ulnar loop or whorl intervening between the index finger and the first small letter, or between two small letters. Dashes will appear on the right side of the Secondary only.
    Consecutive small letters are indicated by: 2a, 2t, 2r, 3a, 3t, and 3r as they appear in fingers 3-5 and 8-10.
  • 18. HENRY CLASSIFICATION
    SUB-SECONDARY
    • The Sub-Secondary is computed from fingers 2-3-4 (numerator) and 7-8-9 (denominator).
    • 19. The Sub-Secondary appears on the classification line to the immediate right of the Secondary, only if no Small Letters are present.
    • 20. Definitive values are assigned to each finger used in the Sub-Secondary.
    • 21. Whorl tracings are also a part of the Sub-Secondary.
  • HENRY CLASSIFICATION
    MAJOR
    • The Major is computed using the thumbs.
    • 22. The Major appears on the classification line to the immediate LEFT of the Primary.
    • 23. Finger #1 has two sets of values as a loop and is used as the numerator. (see diagram next slide).
  • HENRY CLASSIFICATION
    MAJOR
    • Finger #6 has one set of values as a loop and remains constant, it is also used as the denominator.
    • 24. If whorls are present in both thumbs, the tracings are used as the Major.
    • 25. A Small Letter (a, t, r) in either or both thumbs, eliminates the Major.
  • HENRY CLASSIFICATION
    MAJOR CONTINUED
    When #6 finger is a whorl and #1 finger is a loop, use the tracing of #6 for the denominator and the first set of values in #1 for the numerator.
    If #6 has a ridge count of 17 or more, use the second set of values for finger #1.
    1-Right Thumb
    6-Left Thumb
  • 26. HENRY CLASSIFICATION
    FINAL
    • The Final is computed using finger block 5 or 10.
    • 27. The Final appears on the classification line to the right of the Sub-Secondary.
    • 28. The Final is taken from finger #5 if it is either an Ulnar or Radial Loop and placed in the numerator of the classification.
  • HENRY CLASSIFICATION
    FINAL
    • If no loop appears in #5, the Final is taken from finger #10 and placed in the denominator of the classification.
    • 29. If neither finger #5 nor #10 is a loop, there is no final, unless all 10 fingers are whorls. If all 10 fingers are whorls, finger #5 is counted as an Ulnar Loop and placed on the classification line.
  • HENRY CLASSIFICATION
    FINAL
    • The Key is computed by using the ridge count of the first loop beginning with the right thumb, excluding both little fingers.
    • 30. The Key appears on the classification line to the left of the Major.
    • 31. The Key is always used in the numerator of the classification formula, regardless of the finger used.
  • Questions ?