CFP Scene Reconstruction & Photogrammetry Flashcards
6 cards from real CFP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CFP Scene Reconstruction & Photogrammetry flashcards as text
In accident reconstruction photography, why is capturing the driver's-eye-view perspective important?
Answer: It shows what the driver could see from their position, helping establish visibility and reaction-distance at the time of the crash
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.
What is stereophotogrammetry and what advantage does it provide in forensic reconstruction?
Answer: A technique using two slightly offset images to generate true 3D depth measurements of a scene or object
Stereophotogrammetry mimics binocular vision by using two overlapping images to calculate depth, enabling precise 3D coordinate extraction.
What is the primary benefit of using a systematic grid pattern when photographing a large crime scene for reconstruction?
Answer: It ensures complete, overlapping coverage with no gaps, making photogrammetric stitching and measurement reliable
A grid system guarantees systematic overlap between adjacent images, which is essential for accurate photogrammetric stitching and dimensional analysis.
What does 'close-range photogrammetry' specifically enable forensic investigators to accomplish?
Answer: Extract precise 3D measurements and surface models from objects at distances of a few centimeters to tens of meters
Close-range photogrammetry is designed for subjects within close proximity, enabling accurate 3D documentation of individual pieces of evidence, vehicles, or building interiors.
When documenting bullet trajectories for forensic reconstruction, which photographic method best captures the path of travel?
Answer: Trajectory rods placed in bullet holes photographed with a camera aligned along the rod's axis to show directionality
Trajectory rods inserted in bullet holes provide a physical representation of the projectile's path, and axial photography captures the directionality for reconstruction analysis.
What type of photograph is most useful for establishing the speed and direction of a vehicle in an accident reconstruction?
Answer: Scaled aerial or elevated photographs showing the complete distribution of physical evidence such as debris, fluids, and skid marks
Aerial or elevated scaled photographs capture the full evidence scatter pattern, which analysts use with physics formulas to estimate speed and direction of travel.