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Fingerprint Images

Fingerprint Images. Forensics Mr. Foster. LOOP. WHORL. ARCH. Calculating Primary Henry Classification. Each Finger is given a point value. right right left left left index ring thumb middle little + 1. =. right right right left left thumb middle little index ring + 1.

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Fingerprint Images

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  1. Fingerprint Images Forensics Mr. Foster

  2. LOOP WHORL ARCH

  3. CalculatingPrimary Henry Classification Each Finger is given a point value

  4. right right left left left index ring thumb middle little + 1 = right right right left left thumb middle little index ring + 1 Calculate your Primary Henry Classification Assign the number of points for each finger that has a whorl and substitute into the equation: 16 + 8 + 4 + 2 + 1 16 + 8 + 4 + 2 + 1 Only add the number if you have a whorl on the finger!

  5. There are more than 3 pattern classifications. Right hand Ulnar Right hand Radial

  6. thumb side Pinky side

  7. More specific %’s for categories of each pattern type

  8. Fingerprint Lab and Probability Secondary Henry Classification 2. What would happen to your probabilities if you incorporated the more specific %’s?

  9. Minutiae Or Triradius

  10. Activity #2 Identify 1-15

  11. Activity #3- look at the handout and identify prints that came from the same finger.

  12. KEY

  13. Key to Fingerprint Matching Worksheet • A = G = S This one is interesting; there are three separate impressions of the same finger with some very unique features. • B = no match • C = no match • D = no match • E = T • F = J • H = R • I = no match • K = O • L = no match • M = P • N = Q

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