Core
Definition
The approximate centre of a fingerprint pattern. In a loop, it is identified as the innermost recurving ridge's peak or the tip of a central rod. In a whorl, it is approximated by the innermost circuit. One of two landmarks in Henry ridge counting.
- Role in Henry system
- One of two landmarks used as endpoints for ridge counting
- Definition
- The approximate centre of a fingerprint ridge pattern
- Identification in loops
- Peak of the innermost recurving ridge or tip of a central rod
Common questions
What is the core in a fingerprint pattern?+
The core is the approximate centre of a fingerprint ridge pattern. It serves as a key landmark in the Henry classification system, used as one of two endpoints when counting the ridges between the core and delta in fingerprint analysis.
How is the core located differently in loops versus whorls?+
In a loop, the core is identified as the peak of the innermost recurving ridge or the tip of a central rod. In a whorl, the core is approximated by the innermost circuit. Both identify the central focal point of the pattern.
Why is the core important in fingerprint classification?+
The core is one of two main landmarks used in ridge counting for the Henry classification system. Accurate identification of the core and the delta allows fingerprint examiners to count ridges and classify prints for comparison and identification purposes.
Related terms
- ACE-V
- Analysis, Comparison, Evaluation, Verification: the four-stage method for latent print examination used by accredited forensic fingerprint laboratories. Analysis examines the latent in...
- Adermatoglyphia
- Rare genetic disorder, sometimes called immigration delay disease, in which a person is born without friction ridges. The standard counter-example to the...
- Arch
- A fingerprint pattern in which ridges flow across from one side to the other without recurving and without enclosing a central area....
- Delta
- Triangular ridge formation at the point where parallel ridge flows diverge. Arches have 0 deltas, loops have 1, whorls have 2 or...
- Delta (Triradius)
- The point of convergence of three ridge systems in a loop or whorl, visible as a Y-junction or triangular confluence. Loops have...
- Dermal Papillae
- Peg-like projections of the dermis into the epidermis. Their geometry sets the ridge pattern in stone before birth. Damage limited to the...
- Friction Ridge
- Raised epidermal ridge on the palmar surface of fingers, palms and soles, formed during foetal life from the underlying dermal papillae. The...
- Henry Classification
- Numeric filing system built at the Calcutta Fingerprint Bureau in 1897. Assigns a numerator and denominator from whorls on even and odd...
- Henry Classification System
- The fingerprint filing and retrieval system developed by Edward Henry with Haque and Bose in Bengal in the 1890s and adopted by...
- Level 1 Detail
- In ACE-V, the broadest level of information extracted from a fingerprint: the overall ridge flow and pattern type (arch, loop, whorl). Level...
- Loop
- A fingerprint pattern in which ridges enter from one side, recurve, and exit on the same side. The most common pattern type...
- Minutiae (Galton Points)
- Local ridge features used for individual identification. The classical set is ridge ending, bifurcation, dot, island or lake, bridge, hook or spur,...
Explained in these topics
- Fingerprints: History, Characteristics, Types and ClassificationThe approximate centre of the ridge pattern. Used as one endpoint of a ridge count in the Henry classification.
- The Henry Classification System and Pattern TypesThe approximate centre of a fingerprint pattern. In a loop, it is identified as the innermost recurving ridge's peak or the tip of a central rod. In a whorl, i...