Tenprint Fingerprint Quality Standards & Control Flashcards
6 cards from real Tenprint Fingerprint Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Tenprint Fingerprint Quality Standards & Control flashcards as text
What is the standard image size for a single finger in a rolled tenprint capture according to EBTS?
Answer: 1.6 inch × 1.5 inch
EBTS specifies that each rolled finger impression should be captured at approximately 1.6 inches wide by 1.5 inches tall.
What compression algorithm is approved by the FBI for lossy compression of tenprint fingerprint images?
Answer: WSQ (Wavelet Scalar Quantization)
WSQ (Wavelet Scalar Quantization) is the FBI-approved lossy compression standard specifically designed for fingerprint images.
What is the purpose of slap impressions (four-finger simultaneous) on a tenprint card?
Answer: They serve as a verification check against the rolled impressions
Slap impressions verify the sequence and identity of the rolled impressions, ensuring no fingers were switched during rolling.
Which factor most commonly causes a 'creased' or 'scarred' appearance in fingerprint impressions that can affect quality?
Answer: Occupational wear or skin conditions such as eczema
Occupational wear, scars, and skin conditions like eczema or psoriasis can disrupt ridge continuity and degrade impression quality.
What action should a tenprint operator take when a subject's fingers are too dry or flaky to produce quality impressions?
Answer: Apply a small amount of moisturizing lotion and reroll
Applying a small amount of lotion or breathing on the fingertips to add moisture can improve ridge definition for dry or flaky skin.
What is 'slippage' in the context of tenprint fingerprint collection?
Answer: When the subject's finger moves laterally during rolling, causing smeared ridges
Slippage occurs when the subject's finger slides sideways during the rolling motion, producing smeared or doubled ridge images.
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