METHOD FOR DETERMINING REMOTENESS OF SWEAT-FAT HAND MARK

METHOD FOR DETERMINING REMOTENESS OF SWEAT-FAT HAND MARK

FIELD: control-measuring criminalistics equipment, possible use for determining remoteness of sweat-fat hand marks. ^ SUBSTANCE: method for determining remoteness of sweat-fat hand mark includes detection of mark, for example by means of dactyloscopic powder, photometry of image of papillary lines i...

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Bibliographische Detailangaben
Hauptverfasser: USANOV DMITRIJ ALEKSANDROVICH, KALINKIN MIKHAIL JUR'EVICH, SKRIPAL' ANATOLIJ VLADIMIROVICH
Format: Patent
Sprache:eng ; rus
Schlagworte:
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Beschreibung
Zusammenfassung:FIELD: control-measuring criminalistics equipment, possible use for determining remoteness of sweat-fat hand marks. ^ SUBSTANCE: method for determining remoteness of sweat-fat hand mark includes detection of mark, for example by means of dactyloscopic powder, photometry of image of papillary lines in all mark points, digitization of image of mark together with background surrounding it, construction of brightness histogram relatively to mark and relatively to background, determining of average quadratic brightness deviation relatively to mark and relatively to background, production of their relation and comparison to calibration curve produced using a test object. ^ EFFECT: increased precision when determining remoteness of mark. ^ 7 dwg