This document discusses the experience and process of Deputy Bryon O'Neil in using a FARO X330 laser scanner for scanning crime and crash scenes. It provides details on scanner settings and resolutions, planning scan locations and sphere placement, aiming the scanner, dealing with weather conditions, and using Scene software to process and analyze the scan data.
2. My Experience
Hired by Clackamas County Sheriff ’s Office in 2006
Completed IPTM Reconstruction Courses in 2010
Full Time Reconstructionist since February 2014
Collected Evidence
25 Crash Scenes
10 Crime Scenes
Previous Experience with Total Station/Hand Measure
Bought the FARO X330 in March 2014
Scanned
19 Crash Scenes
6 Crime Scenes
4. Settings
Resolution : The resulting scan resolution. You can
select from1/1, 1/2, 1/4,1/5, 1/8, 1/10, 1/16, 1/20 and 1/32
by using the slider.
Quality: Controls the rate of data capture. Quality
(noise level) vs. Speed (time)
Scan Duration: Approximate scan time.
Scan Size: Numbers of point in horizontal and
vertical axes
Point Distance: Point spacing at known distance.
9. Planning your scene Sphere Layout
Sphere Placement Maximum Distance
139mm: Max 60 feet from the scanner
150 mm: Max 60 feet from the scanner
200 mm: Max 90 feet from the scanner
Avoid placing Spheres in front of windows or mirrors if
possible.
Not on the vehicles
Keep track of your progress
Spheres knocked over
3 Common Spheres
10. Are spheres really necessary?
Creating the 3D Image
Target Based- Spheres, Checkerboard
Cloud to Cloud- Similarity is important
Top View Based-Great for internal scenes
Manual
Manual Helpers
Planes
Points
Spheres
39. Data Preservation
Raw Scans
Burn to a disk
800 MB 4 scans
4.5 GB 25 scans
2 GB 7-8 scans usual Crash Scene
One copy stays untouched in the work product
Final Product
4-6 GB for crash Average
58 GB 25 Scan
40. Scene Software
Minimum Requirements
Microsoft Windows XP/ 7 / 8 (64 bit Only)
Multi core Processor 2GHz plus
8GB RAM
Wheel mouse with 2 buttons
Independent graphic card with OpenGL 2.0 or higher support – 1GB on
board memory
My Computer
3.6 GHZ 8 Core Processor
32 GB Ram
NVIDIA Quadro K600 Graphics Card 1GB Memory
3D Mouse
2- 27”Quad HD LED Monitors
41. Scene Software
Merging
Cleaning
Measuring
Fly through movies
Viewing in 3D