Evaluation of ALS Camera Systems in documentation of ... note.pdf · Evaluation of ALS Camera...
Transcript of Evaluation of ALS Camera Systems in documentation of ... note.pdf · Evaluation of ALS Camera...
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Evaluation of ALS Camera Systems in documentation of Fingerprint Evidence
Jiaqi Max Lu, M.S.; Ran Chang, M.S.; Tianyin Yu, M.S.; Henry C. Lee, Ph.D.
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Photography
Visual Examination
Photography
Enhancement Methods
PhysicalMethods
ChemicalMethods
LuminescenceMethods
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ALS attachable DSLR system Current hand held ALS device with DSLR
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ALS attachable DSLR systemCurrent hand held ALS device
with DSLRDominant
Output(nm)Maximum
Light Intensity(mW)
Dominant Output(nm)
Maximum Light
Intensity(mW)Ultra Violet 365
700-1200400 650
Purple 415 N/A N/ABlue 470 450 2000
Green 525 525 730
Equipmenttype
Lightsource
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Enhancement Methods
Powder Amino Acid Cyanoacrylate Fuming Blood Reagent
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Latent Prints Process with Powder Method
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Powder
Powder Silk Black/Clear Glass BottleA. New System B. Traditional System
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Powder
Powder Coin Box Galvanic/Colored Glass BottleA. New System B. Traditional System
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Powder
Magnetic Powder White/Dark Glass BottleA. New System B. Traditional System
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Powder
Powder White/Multi-color Painted CanA. New System B. Traditional System
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Powder
Powder Silver Red/Metal Pot LidA. New System B. Traditional System
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Powder
Magnetic Powder Regular Black/Clear Plastic BottleA. New System B. Traditional System
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Powder
Magnetic Powder Regular Black/Golf BallA. New System B. Traditional System
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Powder
Magnetic Powder White/Multi-color Plastic LabelA. New System B. Traditional System
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Powder
Magnetic Powder Silver Black/White Plastic BottleA. New System B. Traditional System
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Powder
Magnetic Powder Gray/Dark Ceramic BowlA. New System B. Traditional System
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Powder
Fluorescent Powder/Glass frameA. New System B. Traditional System
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Powder
Fluorescent Powder/Multi-color Metal Soda CanA. New System B. Traditional System
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Powder
Sticky Side Wetwop/Tape Sticky SideA. New System B. Traditional System
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Powder
Small Particle Reagent Black/Wet GlassA. New System B. Traditional System
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Latent Prints Process with Amino Acid Method
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Amino Acid
Ninhydrin/Brown PaperA. New System B. Traditional System
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Amino Acid
1,2 Idanedione/Thermal PaperA. New System B. Traditional System
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Amino Acid
D.F.O/Coated PaperA. New System B. Traditional System
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Latent Prints Process with Fuming Method
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Fuming
Basic Red 28/Plastic BagA. New System B. Traditional System
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Fuming
MBD/Glass BottleA. New System B. Traditional System
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Fuming
Rhodamine 6G/Plastic CardA. New System B. Traditional System
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Fuming
RAM/Plastic Shotgun ShellA. New System B. Traditional System
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Fuming
Ardrox/Wooden FloorA. New System B. Traditional System
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Fuming
Ardrox/Metal BoxA. New System B. Traditional System
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Fuming
Basic Yellow 40/Ceramic CupA. New System B. Traditional System
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Latent Prints Process with Blood Reagent Method
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Blood Reagent
Leuco Crystal Violet/TileA. New System B. Traditional System
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Blood Reagent
Hungarian Red/Wooden FloorA. New System B. Traditional System
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Blood Reagent
Merbromin/Metal Soda CanA. New System B. Traditional System
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Blood
Blood/Dark Glass BottleA. New System B. Traditional System
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Results
Quality of captured image of evidence
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Results
Ease of equipment operation
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Results
Manpower requirement for crime scene documentation
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Results
Light source illuminating capability
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Conclusion
Our results indicate both systems will assist in the recognition and documentation of evidence. For the crime scene search, the external ALS device is more practical, while for documentation, the ALS attached DSLR system has its advantages.
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Design for Next Generation
Evidence quality photos direct entry at crime scene
Crime Scene AFIS
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New Solution for Energy Issue
D.F.O/Coated Paper1st generation 2nd generation
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1st generation 2nd generation1,2 Idanedione/Thermal Paper
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Merbromin/Metal Soda Can1st generation 2nd generation
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Rhodamine 6G/Plastic Card
1st generation 2nd generation