Fingerprint Classification- slide 1
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Transcript of Fingerprint Classification- slide 1
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FBI MISSION STATEMENTFBI MISSION STATEMENT
The mission of the FBI is to protect and defend the United States against terrorist and foreign intelligence threats, to uphold and enforce the criminal laws of the United States, and to provide leadership and criminal justice services to federal, state, municipal, and international agencies and partners.
The mission of the FBI is to protect and defend the United States against terrorist and foreign intelligence threats, to uphold and enforce the criminal laws of the United States, and to provide leadership and criminal justice services to federal, state, municipal, and international agencies and partners.
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CJIS MISSION STATEMENTCJIS MISSION STATEMENT
Reduce terrorist and criminal activities by maximizing the ability to provide timely and relevant criminal justice information to the FBI and to qualified law enforcement, criminal justice, civilian, academic, employment, and licensing agencies concerning individuals, stolen property, criminal organizations and activities, and other law enforcement related data.
Reduce terrorist and criminal activities by maximizing the ability to provide timely and relevant criminal justice information to the FBI and to qualified law enforcement, criminal justice, civilian, academic, employment, and licensing agencies concerning individuals, stolen property, criminal organizations and activities, and other law enforcement related data.
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CJIS DIVISIONCJIS DIVISION
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FINGERPRINT PATTERN RECOGNITION
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FINGERPRINT PATTERN RECOGNITION
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Federal Bureau of InvestigationUnited States Department of Justice
Federal Bureau of InvestigationUnited States Department of Justice
Illustrations of Various Fingerprint Patterns
Illustrations of Various Fingerprint Patterns
The presence or existence of whorls in finger impressionsis used as the basis for the determination of the chief or the primary classification.Each whorl appearing in an or all of the ten fingers has a certain arbitrary or fixed value. The addition of the values represented by such whorls and the indication of the total value is known as the primary classification. Illustrations of the whorl types which are shown on the right of this chart. Illustrations of the other types are shown on the left.
The presence or existence of whorls in finger impressionsis used as the basis for the determination of the chief or the primary classification.Each whorl appearing in an or all of the ten fingers has a certain arbitrary or fixed value. The addition of the values represented by such whorls and the indication of the total value is known as the primary classification. Illustrations of the whorl types which are shown on the right of this chart. Illustrations of the other types are shown on the left.
PLAIN ARCHPLAIN ARCH
TENTED ARCHTENTED ARCH
RADIAL LOOPRADIAL LOOP
ULNAR LOOPULNAR LOOP
PLAIN WHORLPLAIN WHORL
CENTRAL POCKETCENTRAL POCKET
DOUBLE LOOPDOUBLE LOOP
ACCIDENTALACCIDENTAL
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FINGERPRINT PATTERN FREQUENCY
FINGERPRINT PATTERN FREQUENCY
Loops65%
Whorls30%
Arches5%
Loops65%
Whorls30%
Arches5%
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LOOPLOOP
Definition: A LOOP is that type of pattern in which one or more ridges enter upon either side, recurve, touch or pass an
imaginary line between delta and core and pass out or tend to pass out upon the same side the ridge entered.
Definition: A LOOP is that type of pattern in which one or more ridges enter upon either side, recurve, touch or pass an
imaginary line between delta and core and pass out or tend to pass out upon the same side the ridge entered.
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FLOW OF RIDGESFLOW OF RIDGES
ULNAR LOOP ULNAR LOOP RADIAL LOOP ULNAR LOOP ULNAR LOOP RADIAL LOOP
THE ABOVE PATTERNS SHOW THE DIRECTION RIDGES FLOW IF LOCATED IN THE RIGHT HAND.
THE ABOVE PATTERNS SHOW THE DIRECTION RIDGES FLOW IF LOCATED IN THE RIGHT HAND.
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RADIAL LOOP ULNAR LOOP RADIAL LOOPRADIAL LOOP ULNAR LOOP RADIAL LOOP
FLOW OF RIDGESFLOW OF RIDGES
THE ABOVE PATTERNS SHOW THE DIRECTION RIDGES FLOW IF LOCATED IN THE RIGHT HAND.
THE ABOVE PATTERNS SHOW THE DIRECTION RIDGES FLOW IF LOCATED IN THE RIGHT HAND.
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1. Sufficient Recurve2. Delta3. Ridge Count - Across a looping ridge
1. Sufficient Recurve2. Delta3. Ridge Count - Across a looping ridge
THREE BASIC REQUIREMENTS OF A LOOPTHREE BASIC REQUIREMENTS OF A LOOP
3 COUNT LOOP3 COUNT LOOP
CORE
SUFFICIENTRECURVE
DELTA
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SUFFICIENT RECURVESUFFICIENT RECURVE
A SUFFICIENT RECURVE consists of the space between the shoulders of a loop free of any appendages which abutupon it at a right angle on the outside of the recurve.
A SUFFICIENT RECURVE consists of the space between the shoulders of a loop free of any appendages which abutupon it at a right angle on the outside of the recurve.
1.2. 3. 4. 5.
6.
8.7.
S S
S
S
S
S
S S
S
S
S
S
S
S
S
S
Shoulders
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SUFFICIENT RECURVESUFFICIENT RECURVE
THE SHOULDERS OF A LOOP are the points at which the recurving ridge definitely turns
inward or curves.
THE SHOULDERS OF A LOOP are the points at which the recurving ridge definitely turns
inward or curves.
S S
SS S
S
9.10. 11.
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APPENDAGEAttachment or Connection
APPENDAGEAttachment or Connection
An appendage striking the outside of the recurve at a right angle will spoil that recurve.
An appendage striking the outside of the recurve at a right angle will spoil that recurve.
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LOOP PATTERN AREALOOP PATTERN AREA
PATTERN AREA includes the CORE, DELTA, and RIDGES which are used in the classification of a loop.
PATTERN AREA includes the CORE, DELTA, and RIDGES which are used in the classification of a loop.
T
T
PATTERNAREA
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TYPELINESTYPELINES
T
T
T
T
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Definition: The two innermost ridges that are parallel and surround or tend to surround the pattern area.
Definition: The two innermost ridges that are parallel and surround or tend to surround the pattern area.
TT
TT
TYPELINESTYPELINES
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DELTADELTA
THE DELTA IS THAT POINT ON A RIDGE AT OR NEAREST THE POINT OF DIVERGENCE OF TWO TYPELINES, AND
LOCATED AT OR DIRECTLY IN FRONT OF THE POINT OF DIVERGENCE.
THE DELTA IS THAT POINT ON A RIDGE AT OR NEAREST THE POINT OF DIVERGENCE OF TWO TYPELINES, AND
LOCATED AT OR DIRECTLY IN FRONT OF THE POINT OF DIVERGENCE.
Area to be considered in front of the point of divergence of two typelines.Area to be considered in front of the point of divergence of two typelines.
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DOT
BIFURCATION
MEETINGOF TWORIDGES
SHORTRIDGE
RECURVINGRIDGE
ENDINGRIDGE
DELTASDELTAS
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CORECORE
THE APPROXIMATE CENTER OF THE PATTERNPLACED UPON OR WITHIN THE INNERMOST SUFFICIENT
RECURVE.
LOCATED ON THE SHOULDERS OF THE INNERMOST LOOP FARTHEST FROM THE DELTA.
THE APPROXIMATE CENTER OF THE PATTERNPLACED UPON OR WITHIN THE INNERMOST SUFFICIENT
RECURVE.
LOCATED ON THE SHOULDERS OF THE INNERMOST LOOP FARTHEST FROM THE DELTA.
CORE CORE CORE CORE
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LOCATED ON THE SPIKE OR ROD IN THE CENTER OF THE INNERMOST RECURVE,
PROVIDED THE SPIKE OR ROD RISES AS HIGH AS THE SHOULDERS.
LOCATED ON THE SPIKE OR ROD IN THE CENTER OF THE INNERMOST RECURVE,
PROVIDED THE SPIKE OR ROD RISES AS HIGH AS THE SHOULDERS.
CORE CORE CORE CORE
CORECORE
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RIDGE COUNTINGRIDGE COUNTING
1 - Count 2 - Counts 3 - Counts 1 - Count 2 - Counts 3 - Counts
1 1 2 21 1 2 2 1 2 2 2 2 11 2 2 2 2 1
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04 - COUNTS04 - COUNTS
CC
DD
04
RIDGE COUNTINGRIDGE COUNTING
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C
D
02
RIDGE COUNTINGRIDGE COUNTING
02 - COUNTS02 - COUNTS
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C
D
RIDGE COUNTINGRIDGE COUNTING
17 - COUNTS17 - COUNTS
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DC
D
03C
03
D
C
D
02
C
D
03C
D
01
D
C02
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D
C
D
C
03 02
C
D
04C
D
02
C
D
01
C
D
01
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D
C
D
C
D
C
D
C
D
C
D
02 02 01
01 01 TTC
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LOOPLOOP
12 COUNTS12 COUNTS
CC
DD
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CCDD
LOOPLOOP
06 COUNTS06 COUNTS
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DD
CC
LOOPLOOP
02 COUNTS02 COUNTS
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CC
DD
LOOPLOOP
07 COUNTS07 COUNTS
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DD
CC
LOOPLOOP
16 COUNTS16 COUNTS
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CC
DD
LOOPLOOP
23 COUNTS23 COUNTS
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DD
CCLOOPLOOP
14 COUNTS14 COUNTS
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DD
CC
LOOPLOOP
02 COUNTS02 COUNTS
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DD
CC
LOOPLOOP
13 COUNTS13 COUNTS
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DD
CC
LOOPLOOP
10 COUNTS10 COUNTS
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DD
CC
LOOPLOOP
17 COUNTS17 COUNTS
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DD
CC
LOOPLOOP
10 COUNTS10 COUNTS
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DD
CC
LOOPLOOP
15 COUNTS15 COUNTS
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DD
CC
LOOPLOOP
14 COUNTS14 COUNTS
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DD
CC
LOOPLOOP
05 COUNTS05 COUNTS
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DD
CC
LOOPLOOP
15 COUNTS15 COUNTS
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DD
CC
LOOPLOOP
22 COUNTS22 COUNTS
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DD
CC
LOOPLOOP
03 COUNTS03 COUNTS
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DD
CC
LOOPLOOP
14 COUNTS14 COUNTS
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DD
CC
LOOPLOOP
10 COUNTSJoin the two loops as one.
10 COUNTSJoin the two loops as one.
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ULNAR LOOPULNAR LOOPUlnar Loops flow toward the little finger.Ulnar Loops flow toward the little finger.
03 01 02 03 03
0303 02 03 02
The direction of flow applies to the finger on the hand, not as they appear on the fingerprint card.
The direction of flow applies to the finger on the hand, not as they appear on the fingerprint card.
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RADIAL LOOPRADIAL LOOP Radial Loops flow toward the thumb. Radial Loops flow toward the thumb.
03 52 03 53 01
55 01 53 01 01
The direction of flow applies to the fingers on the hand, not as they appear on the fingerprint card.
The direction of flow applies to the fingers on the hand, not as they appear on the fingerprint card.
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NOTE:NOTE:
RADIUSRIGHT HAND
ULNA
When a loop enters and exits from the THUMB side of the hand, the pattern will always be a “Radial Loop.”
When a loop enters and exits from the PINKY finger, the pattern will always be an “Ulnar Loop.” There are NO exceptions to this rule!
When a loop enters and exits from the THUMB side of the hand, the pattern will always be a “Radial Loop.”
When a loop enters and exits from the PINKY finger, the pattern will always be an “Ulnar Loop.” There are NO exceptions to this rule!
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LOOP FREQUENCYLOOP FREQUENCY
ULNAR94%
RADIAL6%
ULNAR94%
RADIAL6%
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Questions?Questions?