3D Scanning Keynote Presentation By Lt. Donny Mahoney

3D Laser Scanning

San Bernardino County Sheriff’s Department

Lt. Donny Mahoney909-522-7580

Central Patrol

Sorry Sarge…it wasn’t my fault! Dept. Liability?

How do I Capture Every Piece of Evidence

in this scene?

How Do I Document this Scene and Open the Roadway Quickly?

Fatal Accident Reconstruction Team

(FART)

Major Accident Investigation Team

(MAIT)

Diagramming

Measuring Equipment

• Fiberglass Tapes

Drawing Equipment

• Drawing Templates

Drawing Equipment

• Protractors and Compass

Drawing Equipment

• Engineering Rulers

y

x

Main Street

1st Street

Reference Line

Reference point

y

x

Nikon DTM-520Total Station

MapScenes

MapScenes

Scientific Investigations Division

1

2 34

5

6

Trajectory for an Officer Involved Shooting

Trajectory for an Officer Involved Shooting

Blood Spatter

Point of Origin

Arterial stainsresult when blood

leaves an arteryunder pressurefrom the heart

beating.

This pattern shows two separate Points

of Origin, as indicatedby the two different

colors used to stringtrajectory.

Sokkia 550 RXReflectorless

Sokkia 550 RX Visual Statements EdgeFX

Sokkia 550 RX Visual Statements EdgeFX

Leica C-10Scanning Station

Progression to 3D ScanningLeica C-10

Scanning Station

Leica C-10Scanning Station

• Large amount of equipment to transport and carry

• Heavy so you must keep in mind who will be using it

•Need to break it down, move it, and rebuild it

•Scan time to resolution much longer

So How Did We Get Here?

• The size of our county deemed it necessary to have more units, Homicide, CSI, and Traffic all needed

• Leica P-20 was coming out soon– Lieca wanted to give me a smoking hot deal on the

C-10

• We are a government entity and are required to get 3 bids

So How Did We Get Here?

The Famous FARORepresentative

Matt Daly

FARO Focus 3D 130

FARO Focus 3D 130

FARO Focus 3D 130

FARO Focus 3D 130

FARO Focus 3D 130

FARO Focus 3D 130 Leica C-10

• Up to 976,000 points per/sec

•Takes less than half the time to get 10x the quality

•Weighs 11 lbs.

•Need paper or sphere targets

•Cost less

•Very easy to use at the front end and back end

• Up to 50,000 points per/sec

•Averages about 1 hour per scan

•Weighs about 30 lbs.

•Needs calibrated dual target pole•Paper targets, magnetic targets

•Cost more

•Very difficult to use at front and back end

FARO Focus 3D 130 Leica C-10

• Can’t scan in a down pour

•Class 1 Laser•Phase Shift/Invisible

•130 meters

•SD camera card

•Cost less

•Very easy to use at the front end and back end

• You can scan in the rain

•Class 3R Laser•Pulsed/Green

•300 meters

•Internal hardrive

•Cost more

•Very difficult to use at front and back end

FARO Focus 3D 130 Leica P-20

• Can’t scan in a down pour

•Class 1 Laser•Phase Shift

•Invisible

•130 meters•976,000 points/sec

•SD camera card

•Cost less

•Very easy to use at the front end and back end

• You can scan in the rain

•Class 1 Laser•Phase Shift

•Invisible

•120 meters•1 million points/sec

•Internal Hard Drive

•Cost way more

•Very difficult to use at front and back end

FARO Focus 3D 130

FARO Focus 3D 130

SBCSD Crime Scene Specialists

Thank You

Lt. Donny MahoneySBCSD

Central Patrol909-522-7580