CFP CFP Scene Reconstruction & Photogrammetry 2

Question 1

In accident reconstruction photography, why is capturing the driver's-eye-view perspective important?

Accepted Answer

It shows what the driver could see from their position, helping establish visibility and reaction-distance at the time of the crash

Answer

Driver's-eye-view photographs document sight lines and visibility conditions, which are central to determining whether a hazard was visible and if reaction time was adequate.

Question 2

What is stereophotogrammetry and what advantage does it provide in forensic reconstruction?

Accepted Answer

A technique using two slightly offset images to generate true 3D depth measurements of a scene or object

Answer

Stereophotogrammetry mimics binocular vision by using two overlapping images to calculate depth, enabling precise 3D coordinate extraction.

Question 3

What is the primary benefit of using a systematic grid pattern when photographing a large crime scene for reconstruction?

Accepted Answer

It ensures complete, overlapping coverage with no gaps, making photogrammetric stitching and measurement reliable

Answer

A grid system guarantees systematic overlap between adjacent images, which is essential for accurate photogrammetric stitching and dimensional analysis.

Question 4

What does 'close-range photogrammetry' specifically enable forensic investigators to accomplish?

Accepted Answer

Extract precise 3D measurements and surface models from objects at distances of a few centimeters to tens of meters

Answer

Close-range photogrammetry is designed for subjects within close proximity, enabling accurate 3D documentation of individual pieces of evidence, vehicles, or building interiors.

Question 5

When documenting bullet trajectories for forensic reconstruction, which photographic method best captures the path of travel?

Accepted Answer

Trajectory rods placed in bullet holes photographed with a camera aligned along the rod's axis to show directionality

Answer

Trajectory rods inserted in bullet holes provide a physical representation of the projectile's path, and axial photography captures the directionality for reconstruction analysis.

(CFP) Certified Forensic Photographer Practice Test

(CFP) Certified Forensic Photographer Practice Test

CFP CFP Scene Reconstruction & Photogrammetry 2