Photogrammetry Expert Witnesses

Concord, California

Accident Reconstruction, Human Factors - Nighttime Visibility, Line-of-Sight Analysis, Driver's Perspective Animation, 3D Video Reconstruction, Use-of-Force Reconstruction, Officer-Involved Shooting Reconstruction, Use-of-Force Human Factors, Ballistic Trajectory Analysis, Photogrammetry, Laser Scanning, Forensic Animation

Jason C. Fries is the CEO and lead forensic expert of 3D Forensic, Inc. He has worked on forensic analyses and productions since 1997 and has since become one of the most reputable forensic voices in the industry. Fries’s innovations in multiple forensic specialties have enabled 3D Forensic to offer some of the most comprehensive services in the nation. Fries developed his forensic prowess through research in use-of-force incidents at the Force Science Institute, completing the Advanced Specialist certification. He also graduated from San Diego State University with a BS in Biology and focuses in Physics and Chemistry. Throughout his years as CEO of 3D Forensic, Jason has successfully infused forensic testimony, visualization, and analysis to the company’s casework, earning the trust and recognition of California and the nation’s most influential attorneys. He has written numerous pieces for forensic and legal publications including Forensic Magazine, Claims Magazine, Internationa...

Dana Point, California

Animations, Land Surveying - scene mapping, scene visualization, sightlines, stopping sight distance, scene reconstruction, topographic mapping, passing sight distance, photogrammetry, visual demonstratives, as-built mapping, spatial data visualization, video analysis, animations, GPS data analysis, spatial data analysis, photo analysis

Steyn Visagie is a licensed land surveyor, forensic animator, and FAA-certified remote (drone) pilot. He holds a Bachelor of Science in Surveying from the University of Cape Town and is a licensed professional land surveyor in California and Virginia. With a decade of experience in the forensic industry, he has worked with litigators and experts in accident reconstruction, injury biomechanics, traffic engineering, and human factors. Steyn has inspected, surveyed, reconstructed, analyzed, and visually represented hundreds of scenes - ranging from car and train accident scenes to ski slopes, trampoline parks to prison cells, police shooting scenes to polo fields, and even an exploded gas line to a "haunted house of horrors". If visualizing and understanding the spatial characteristics of a scene is a key component of your case, I can help.

Sacramento, California

Land Surveying, Engineering - Aerial Photo Analysis, Mapping, Explosions, Fire Origin & Cause Investigations, Forensic Engineering, Geographic Information Systems - GIS, High Definition Surveying (HDS), Highway Sight Distance, 3D Laser Scanning, LiDAR, Geomatics, Photogrammetry, Visibility Studies, Wildfires, Wildland Fires

Mr. Curtis has more than 30 years of experience in land surveying and geomatics engineering. For nearly 20 years, Mr. Curtis has been retained by law firms, insurance companies, the California Office of the Attorney General, and the U.S. Attorney’s Office to provide professional surveying and mapping, expert witness, and litigation consultant in civil and criminal matters related to wildfires, wildland fire origin and cause investigations, explosions, highway sight distance incidents, workplace injury, catastrophic injury, and wrongful death. As a geomatics engineer, Mr. Curtis has provided project delivery support (GPS control, conventional surveying, photogrammetric mapping, raster imaging, landnet boundary resolution, right of way engineering, and GIS) on projects domestically and abroad. Mr. Curtis’ responsibilities include the supervision and direction of production staff and subconsultants on a project/task basis, cost estimating and scoping, collection, processing, and ana...

Sacramento, California

Video, Photography & Imaging - Visibility, Daytime Visibility, Nighttime Visibility, Visibility Study, Visibility Analysis, Human Factors, Video Analysis, Photography, Photo Analysis, Photogrammetry, Mapping, Visual, Drone, UAV, Aerial, GIS, Animation, Photomodeling, 3D, Lighting

Paul Jacobs provides animation and simulation services to aid in the understanding of complex events, as well as photography, video and technical services for controlled event reenactments, especially as related to daytime and nighttime visibility. Paul works in collaboration with counsel, accident reconstruction, human factor, and other specialized experts to fairly and accurately reconstruct incidents for fact finding, documentation and evidentiary purposes. Paul Jacobs specializes in the visualization of forensic principles and the production of effective demonstrative exhibits that assist counsel in presenting complex, factual information in an understandable way, and provides supporting testimony. Paul specializes in visibility analysis. A visibility analysis documents an event participant’s ability to visually detect a stimulus. Daytime, nighttime, and low light visibility studies use photographic, video and metric data capture of controlled tests to document scene elements i...

LAGUNA NIGUEL, California

Biomechanics, Accident Reconstruction - Accident Reconstruction, Biomechanical Analysis of Injury, Premises Liability, Slips/Trips and Falls, Crash Data Retrieval, Heavy Vehicle EDRs, Blackbox Download, Photogrammetry, Computer Simulations, Failure Analysis, Human Factors, Laboratory Testing, 3D Laser Scanning, Expert Witness Testimony

I am a Senior Biomechanical Engineer and Accident Reconstructionist. I am registered as a professional mechanical engineer (PE) in California, Nevada and Colorado. I specialize in accident reconstruction, injury biomechanics and injury mechanism/causation analysis. I works on cases across the country, analyzing injuries in automotive collisions, industrial accidents, workers compensation claims, premises liability claims, slip/trip and falls, and sport/recreation accidents. I have provided litigation support to insurance companies, law firms, and automotive manufacturers/industries over the past 12+ years. Technical Areas of Specialization: - Biomechanical Analysis of Injury - Accident Reconstruction - Premises Liability; Slips/Trips and Falls - Crash Data Retrieval; Heavy Vehicle EDRs - Photogrammetry and 3D Computer Simulations - Vehicle Systems Analysis Services: - Accident Reconstruction - Biomechanical Analysis of Injury - Premises Liability; Slips/Trips and Falls - Crash Dat...

Trumbull, Connecticut

Video, Photography & Imaging - Forensic Video Analysis, Image Clarification, Security Video, Surveillance Video, Cell Phone Video, Photogrammetry, Reverse Projection, Video Production, Day in the Life Video, Drone Video & Drone Photography, Digital Media Forensics, 3D Representation & 3D Graphics, Court Demonstratives, Speed & Height Calculations

Steve Kline is a seasoned video and digital media professional with over 30 years of experience in encoding, audio/video engineering, multimedia production, 2D/3D graphics, and live-streaming technologies. This deep technical foundation naturally evolved into a specialized focus in Video and Audio Forensics. Steve began assisting law enforcement, attorneys, and private security firms in 1996, applying his video expertise to criminal cases involving armed robbery, hit-and-run incidents, and homicides. His video assistance in a 2007 assault case and forensic involvement in Connecticut’s last death penalty case in 2009 marked the beginning of an ongoing collaboration with the Connecticut State Attorney’s Office. Since then, Steve has processed digital evidence in dozens of homicide cases, supporting both investigations and prosecutions. His objective, fact-based approach has earned him respect across the aisle—he is routinely hired by defense attorneys who have seen firsthand the qua...

Peachtree City, Georgia

Security, Premises Liability - Security, Premises Liability, Threat Assessment, Active-Shooter, Inadequate & Negligent Security, Workplace Violence, Security Management, Security Guards, Gas Station, Apartment, Parking Garage, ASIS, Physical Security, Asset Protection, Part 107, Investigations, WPV, SHRM, Photogrammetry, drone

Josh is a senior consultant at Group Nine Risk Consulting and a seasoned professional with over 20 years of career experience in corporate security and law enforcement. Josh is board certified in Security Management, having earned the Certified Protection Professional (CPP) certification through ASIS International. Globally recognized as the standard of excellence for security management professionals, the CPP demonstrates one’s knowledge and competency in seven key domains of security: Security Principles and Practices, Business Principles and Practices, Investigations, Personnel Security, Physical Security, Information Security, and Crisis Management. In addition to his security expertise, Josh is a Part 107 licensed drone pilot, specializing in 3D scene modeling and photogrammetry services. His advanced aerial imaging capabilities provide critical support for forensic investigations, security assessments, and accident reconstruction. Josh is also a Certified Threat Manager (CTM...

Boise, Idaho

Human Factors, Products Liability - Mechanical, Industrial, Safety Engineering, Forensic Engineering, Human Factors, Product Liability, Warnings, Labels, Defects, Visibility, Reconstruction, Failure Analysis, OSHA, Construction, Equipment Failures, Industrial Accidents, Power Utility Accidents, Insurance Claims, Photogrammetry

Dr. Aleksander has a diversified Engineering background with specific experience (50 years) in Manufacturing, Cost Analysis, Consulting Engineering, Engineering Sales, Project Management, Product Development, Research, Lecturing, and Technical / Litigation Forensic Engineering Investigations of accidents and equipment failures. He has worked extensively in heavy industry (conveyors, biomass boilers, electric utilities) as well as the Forensic Engineering practice. Dr. Aleksander was the founding chair of the ASTM committee E58 on Forensic Engineering. He worked overseas on some 40 occasions in multiple South East Asia locations, and was involved in innovative efforts in international plastics mitigation. His academic credentials (Ph.D. Human Factors and Safety Engineering) bring a solid foundation to issues regarding product liability, warnings, labels, and use, based on a decades of development and research, and standards. This training also compliments Dr. Aleksander's experience...

Hampden, Massachusetts

Accident Reconstruction, Human Factors - EDR analysis, photogrammetry, nighttime visibility, speed from video, perception-reaction, vehicle dynamics, driver behavior, pedestrian crash, bicycle crash, crash simulation, motorcycle crash, roadway friction, drone mapping, occupant kinematics, scene visualization, low speed impact, line-of-sight, sensitivity analysis

Christopher is an accident reconstructionist who holds ACTAR accreditation, an Engineer‑in‑Training (EIT) designation, and certification as an Associate Ergonomics Professional  (AEP) through the Board of Certification in Professional Ergonomics (BCPE). He brings both law enforcement experience and private consulting expertise to the analysis and reconstruction of traffic collisions and related events. His firm, Rule 62 Consulting LLC, provides technical analysis, site documentation, and human factors evaluation for criminal, civil, and administrative matters. Christopher's background includes service with a state police accident reconstruction unit followed by several years in private practice. He combines investigative field experience with data‑driven modeling techniques to address questions of speed, timing, visibility, and driver perception objectively and reproducibly. Mr. Kennedy is licensed as an FAA Part 107 Remote Pilot and incorporates UAV‑based aerial imagery into scen...

Nevada

Accident Reconstruction, Human Factors - Nighttime Visibility, Line-of-Sight Analysis, Driver's Perspective Animation, 3D Video Reconstruction, Use-of-Force Reconstruction, Officer-Involved Shooting Reconstruction, Use-of-Force Human Factors, Ballistic Trajectory Analysis, Photogrammetry, Laser Scanning, Forensic Animation

Jason C. Fries is the CEO and lead forensic expert of 3D Forensic, Inc. He has worked on forensic analyses and productions since 1997 and has since become one of the most reputable forensic voices in the industry. Fries’s innovations in multiple forensic specialties have enabled 3D Forensic to offer some of the most comprehensive services in the nation. Fries developed his forensic prowess through research in use-of-force incidents at the Force Science Institute, completing the Advanced Specialist certification. He also graduated from San Diego State University with a BS in Biology and focuses in Physics and Chemistry. Throughout his years as CEO of 3D Forensic, Jason has successfully infused forensic testimony, visualization, and analysis to the company’s casework, earning the trust and recognition of California and the nation’s most influential attorneys. He has written numerous pieces for forensic and legal publications including Forensic Magazine, Claims Magazine, Internationa...

Missouri City, Texas

Accident Reconstruction, Biomechanics - Accident reconstruction, Biomechanics, Event Data Recorder (EDR) Analysis, Engine Control Module (ECM) Analysis, Low-speed analysis, Site survey, Vehicle damage analysis, Photogrammetry, Acceleration force analysis, Delta-V determination, Momentum analysis, Lane change analysis, computer animation

Registered professional engineer with extensive training in accident reconstruction and biomechanics, including traumatic brain injury, acceleration, force analysis, crash scene investigation, crash data retrieval data analysis. As a registered professional engineer with an excellent accident reconstruction and biomechanics background, Mr. Holloman has performed accident reconstruction for over twenty-five years. Over the past several years Mr. Holloman has worked many commercial vehicle (18-wheeler) cases involving automobiles and pickup trucks and provided computer renderings of accident scenarios and time/distance analysis. His consulting specialties are commercial (18-wheeler), private vehicle and forklift accident reconstruction, biomechanics, fatigue failure analysis, mechanical failure analysis, and machine tools failure analysis. Mr. Holloman also has trial and deposition testimony experience, having testified in trial or deposition in over 25 cases. Mr. Holloman’s continu...