Category List


Tag List

Witness Testimony (1)
Operator Liability (1)
California District Attorneys Association (1)
Trace Back Analysis (1)
hot topic (1)
.45 Caliber (1)
collaborative (1)
2014 Annual Conference (1)
CalTrans (1)
The Working Model (3)
deposition (1)
CNN (1)
GPS Analysis (1)
Vehicle Crush Analysis (1)
nighttime visibility study (3)
Ballistic Study (3)
Exemplar Life Sized Intersection (1)
CA2RS (1)
Michael Brown (1)
Incident and Exemplar Vehicles (1)
Construction Accident (1)
Video Capture Frame Rate (1)
Specific Calculations (1)
reconstruction analysis (2)
Side Bars (1)
Officer Involved Shooting (3)
Laser Assisted Photogrammetry (2)
Power Line Wire Strike (1)
Vehicle 3D Laser Scan (1)
Forensic Expert Witness Association (1)
Fieldwork (1)
Reporter Injured (1)
Complex Accident Scene Reconstruction (3)
forensic (1)
Illustrate Driver's Eye View (1)
OIS (1)
forensic expert (1)
Radiological (1)
First Degree Murder (1)
911 Call (1)
largest infant death settlement in california (1)
Nieto Verdict (1)
Visible Geometry (1)
3D Animation (10)
Downstream Benefits of 3D Laser Scanning (1)
Camera Lense Distortion (1)
Marco Topete Murder (2)
Physical Evidence (1)
infant death settlement (1)
Expert Witness (3)
by eye (1)
Eye Witness (2)
Personal Injury (1)
forensic consultant (1)
sacramento settlement (1)
Surgical (1)
Explosion (1)
Sam Dubose (1)
3D Laser Scanning (18)
consultant (1)
Exhibits Foundation (1)
Sight Obstructions (1)
Ray Tensing (1)
3D Animation over Nighttime Video (2)
World Forensic Festival (1)
scientific evidence (1)
Laser Scanning (3)
3D Working Model (18)
Testimony (3)
accident reconstruction (2)
Crush Analysis (1)
California Association of Accident Reconstruction Specialists (1)
402 Hearing (1)
Complete Analysis (1)
Cross Examination (2)
Determine Driver's Eye View (2)
seachao (1)
northern california chapter (1)
professional (1)
AR15 (3)
Nighttime Accident Reconstruction (2)
Expert's Analysis (1)
CACLD (1)
Forensic Animation (1)
Body Camera (1)
Ferguson MO (1)
Litigation Declarations (1)
Dr Judy Melinek (1)
Forensic Science International (1)
Gunshot Wound Modeling (3)
1000 Hours (1)
ISO 17020 (1)
Capital Crime (1)
Crosswalk (1)
$84,000,000 Verdicts (1)
CDAA (1)
9.75 million (1)
Crosswalk in Shadow (1)
3D Animation and Video Compositing (3)
Expert's Preparation (1)
Witness Stand (1)
Camera Lense Field of View (1)
7.6 Mile Pursuit (1)
Defense (2)
Shooting (1)
Determine Degree of Error (1)
Professional Association (1)
TImeline from Audio (1)
Radio Traffic (1)
Reconstruction (1)
evidence documentation (2)
3D Gunshot Wound Path Model (6)
Construction Worker (1)
Litigation (1)
film (1)
forensic mapping (1)
Objections (1)
animation (1)
3d Visualization (6)
Emergency Deployment Recorders (1)
Accidental Shooting (1)
CCSF (1)
crash scene mapping (1)
Trajectory (1)
Monte Carlo Method (1)
CAC (1)
Photogrammetry (3)
California Association of Criminalists (1)
Laser Scan (4)
Eye (1)
Craig Fries (1)
Nighttime Video (2)
FEWA Secretary (1)
body camera for deputies and officers (1)
Medical (1)
Medical Animation (1)
Criminalist (1)
Nieto (1)
California Association of Crime Lab Directors (1)
Surgical Animation (1)
3 (1)
Seoul Korea (1)
Bus vs. Pedestrian (1)
Shooter's Location (1)
Driver's Eye Video (4)
Excellent Presentations (1)
911 Call Audio (1)
Radio Traffic Audio (1)
Error Analysis (1)
Analysis (1)
CDAA Winter Conference (1)
South Lake Tahoe (1)
Ballistic Trajectory Analysis (7)
Video Analysis (2)
Driver's Eye View Obstruction (3)
Ohio vs Tensing (1)
FEWA (1)
Cone of Uncertainty (1)
Trajectory Rods (2)
Animation over Video (1)
Single Vehicle Accident (1)
Plaintiff (2)
Ballistics Analysis (5)
Shadow Analysis (1)
National News (1)
New Forensic Technology (1)
News Van (1)
Muni Bus On-Board Camera System (1)
Peer-Reviewed (2)
7 Days on Witness Stand (1)
Trace back to shooter's location (1)
Variances (1)
Photometry (2)
Wire Strike (1)
Shadow (1)
Autopsy Report (2)
Old Way vs Best Way (1)
Demonstrative Exhibits (1)
Guilty Verdict (1)
Measurements (1)
.223 (1)
Assault Rifle (2)
San Francisco Intersection (2)
David vs. Goliath Case (1)
Mistrial (1)
Timing and Location of Evidence (1)
3D crime scene mapping (2)
Video Alignment (1)
Visibility Studies (2)

Tag Cloud

nighttime visibility studyCNN3D Laser ScanningVariancesDavid vs. Goliath CasePhotogrammetryRay TensingSingle Vehicle Accidentinfant death settlementNieto VerdictSurgicalFieldworkGuilty VerdictIncident and Exemplar VehiclesLitigationsacramento settlementTrajectoryComplete Analysisforensic consultantAccidental ShootingMistrialNational News3D Animation and Video CompositingCone of UncertaintyconsultantLaser ScanRadio Traffic AudioSam DubosePeer-ReviewedWitness TestimonyPlaintiff2014 Annual ConferenceSurgical AnimationGPS AnalysisCapital CrimeLaser Assisted PhotogrammetryIllustrate Driver's Eye ViewTestimonyCrosswalkFirst Degree MurderExpert's AnalysisVehicle Crush AnalysisTImeline from AudioDr Judy MelinekRadiologicalVisibility StudiesMeasurementsAnalysisDownstream Benefits of 3D Laser Scanning3D Working ModelCDAAPower Line Wire StrikeReporter InjuredFEWATrace Back AnalysisNighttime Accident Reconstructionevidence documentationVisible GeometrySide BarsCA2RSAssault RifleVideo Capture Frame RateSeoul Korea.45 CaliberForensic Expert Witness AssociationShadowConstruction AccidentComplex Accident Scene ReconstructionMichael BrownTrace back to shooter's locationThe Working ModelDemonstrative Exhibitsaccident reconstructiondepositionSan Francisco IntersectionNews VanBus vs. PedestrianCriminalistISO 17020California Association of Accident Reconstruction SpecialistsDetermine Degree of ErrorExcellent PresentationsMedicalby eyeforensic mappingBallistic Trajectory AnalysisAnimation over VideoVideo AlignmentCalifornia Association of CriminalistsBallistics Analysis.223Sight ObstructionsOfficer Involved ShootingWorld Forensic FestivalDriver's Eye VideoRadio Trafficlargest infant death settlement in california3D Gunshot Wound Path ModelVehicle 3D Laser ScanPhotometryConstruction WorkerCalifornia District Attorneys Associationforensic expertCACPhysical EvidenceFEWA Secretary3D AnimationseachaoNietoGunshot Wound ModelingForensic AnimationOISforensicfilm911 Call AudioObjectionsOld Way vs Best WayMedical AnimationDetermine Driver's Eye ViewWire Strikenorthern california chapterForensic Science InternationalWitness StandEyeOperator Liability3d Visualization3AR15professionalCACLDcrash scene mappingCamera Lense Field of ViewCraig FriesSpecific Calculations9.75 million3D Animation over Nighttime Video7.6 Mile PursuitProfessional AssociationShooter's Location3D crime scene mappingCDAA Winter ConferenceExhibits FoundationNew Forensic TechnologyExemplar Life Sized Intersection$84,000,000 Verdicts911 Call7 Days on Witness StandCrosswalk in ShadowCrush AnalysisCCSFBallistic Study402 HearingOhio vs TensingCamera Lense DistortionTiming and Location of EvidenceLitigation DeclarationsanimationExplosionExpert's PreparationDriver's Eye View ObstructionEye WitnessPersonal InjuryShadow AnalysisDefenseFerguson MOCalTransBody CameraCalifornia Association of Crime Lab Directors1000 HoursShootingcollaborativeMuni Bus On-Board Camera SystemVideo Analysisreconstruction analysisExpert Witnessscientific evidenceSouth Lake TahoeAutopsy ReportLaser Scanninghot topicbody camera for deputies and officersError AnalysisReconstructionEmergency Deployment RecordersNighttime VideoTrajectory RodsMonte Carlo MethodMarco Topete MurderCross Examination


Archive

Blog Search

PSI Instrumental in Successful $84,000,000 Verdicts

PSI was instrumental in two recently successful verdicts equaling $84,000,000. Carpio vs. Aubin for $28,000,000 and Anderson vs. CalTrans for $56,000,000. Both of these cases featured 3D Laser Scanning to recreate the scene and driver's eye video to recre…
Carpio vs. Aubin - $28,000,000 Verdict against Caltrans  The scenario for this case is a pedestrian was struck at night in a poorly lit crosswalk on a freeway onramp. Using our… http://precisionsim.com/blog/2017-blog-posts/psi-mar-2017-blog-posts/psi-instrumental-successful-84000000-verdicts/

A New Peer Reviewed Article for 2017

PSI's CEO Craig Fries, are co-authored a paper that has been accepted in the peer-reviewed Forensic Science International: Gunshot Wound Trajectory Analysis Using Forensic Animation to Establish Relative Positions of Shooter and Victim.
PSI's CEO Craig Fries, are co-authored a paper that has been accepted in the peer-reviewed Forensic Science International: Gunshot Wound Trajectory Analysis Using Forensic… http://precisionsim.com/blog/2017-blog-posts/jan-2017-blog-posts/new-peer-reviewed-article-2017/

Reconstruction of Shooting Using Audio for a Timeline

In this day and age, it seems that just about every event is captured by video either via surveillance cameras or cell phones. Once a video’s frame rate is established it is not difficult to create a timeline of events. However, in this case we don’t have…
In this day and age, it seems that just about every event is captured by video either via surveillance cameras or cell phones. Once a video’s frame rate is established it is not… http://precisionsim.com/blog/2016-blog-posts/jul-2016-blog-posts/reconstruction-shooting-using-audio-timeline/

Reconstruction of a Fatal Accidental Shooting

A 20-year-old man was ordered to stand trial for murder in connection with the December 8, 2014 shooting death of his mother at their home near Lake Berryessa in Napa County, California. Joseph Brooks Conkright, known as Brooks, told authorities that he a…
A 20-year-old man was ordered to stand trial for murder in connection with the December 8, 2014 shooting death of his mother at their home near Lake Berryessa in Napa County,… http://precisionsim.com/blog/2016-blog-posts/jun-2016-blog-posts/reconstruction-fatal-accidental-shooting/

Reconstruction of a Power Line Wire Strike Event

A television news van operator and a news reporter, (the plaintiff in this case) were late arrivals to cover a public service event put on by the local police department. Upon arrival, the news van carrying the reporter has limited options for parking nex…
A television news van operator and a news reporter, (the plaintiff in this case) were late arrivals to cover a public service event put on by the local police department. Upon… http://precisionsim.com/blog/2016-blog-posts/may-2016-blog-posts/reconstruction-powerline-wire-strike-event/

PSI Case Study: Construction Accident Reconstruction

Sometimes, the benefit of creating a virtual 3D Working Model lies in the ability to perform analyses within the computer that simply cannot be performed within the real world scene. Reconstruction of accidents that occurred during construction of a proje…
Sometimes, the benefit of creating a virtual 3D Working Model lies in the ability to perform analyses within the computer that simply cannot be performed within the real world… http://precisionsim.com/blog/2016-blog-posts/may-2016-blog-posts/psi-case-study-construction-accident-reconstruction/

Complex Reconstruction of a Single Vehicle Accident

3D Laser Scanning is PSI’s go-to tool for accurately documenting large and complex accident and crime scenes for many reasons. As illustrated in previous posts, often the primary benefit is the ability to preserve a complex scene and all of its physical e…
3D Laser Scanning is PSI’s go-to tool for accurately documenting large and complex accident and crime scenes for many reasons. As illustrated in previous posts, often the primary… http://precisionsim.com/blog/2016-blog-posts/apr-2016-blog-posts/complex-reconstruction-single-vehicle-accident/

Verdict: Guilty of First Degree Murder 3D Laser Scanning and GPS Analysis

On Thursday, Sept. 26, 2013 a jury found the 38-year-old Reno man guilty of murder and seven other felonies stemming from a car chase that ended in a hail of bullets from Wallin-Reed’s AR-15 assault rifle. Gregory Chad Wallin-Reed will likely spend the re…
On Thursday, Sept. 26, 2013 a jury found the 38-year-old Reno man guilty of murder and seven other felonies stemming from a car chase that ended in a hail of bullets from… http://precisionsim.com/blog/2015-blog-posts/nov-2015-blog-posts/verdict-guilty-first-degree-murder-3d-laser-scanning-and-gps-analysis/

Vehicle Crush Analysis with Laser Scanning

In the analysis of vehicle accidents, one of the most important sources of insight is the physical evidence left behind in the form of vehicle deformation, often referred to as “crush”. The amount and location of the damage to the vehicles exterior and in…
In the analysis of vehicle accidents, one of the most important sources of insight is the physical evidence left behind in the form of vehicle deformation, often referred to as… http://precisionsim.com/blog/2015-blog-posts/oct-2015-blog-posts/vehicle-crush-analysis-laser-scanning/

California Case Sets Important Precedent for Leica ScanStation Data as Scientific Evidence

Julia Bertoli was crossing an intersection with three high school friends in Sebastopol, Calif., on June 3, 2009, when the 15-year-old was struck by a car. The impact—which threw Bertoli approximately 30 feet in the air and 40 feet down the roadway—result…
Julia Bertoli was crossing an intersection with three high school friends in Sebastopol, Calif., on June 3, 2009, when the 15-year-old was struck by a car. The impact—which threw… http://precisionsim.com/blog/2015-blog-posts/aug-2015-blog-posts/california-case-sets-important-precedent-leica-scanstation-data-scientific-evidence/

3D Working Model - Shadow Analysis

PSI’s use of the 3D Working Model has provided us with a wide array of opportunities to perform very precise analyses and illustrate the results at trial. In a recent case, PSI employed the Working Model and 3D Laser Scanning to analyze and illustrate the…
PSI’s use of the 3D Working Model has provided us with a wide array of opportunities to perform very precise analyses and illustrate the results at trial. In a recent case, PSI… http://precisionsim.com/blog/2015-blog-posts/jul-2015-blog-posts/3d-working-model-shadow-analysis/

Caught in the Act! Part Three

3D Laser Scanning – Determining & Illustrating Driver Eye View Obstructions: In the reconstruction of vehicle accidents, particularly vehicle versus pedestrian cases, one of the issues that often arises is the portion of the scene that the pedestrian w…
3D Laser Scanning – Determining & Illustrating Driver Eye View Obstructions: In the reconstruction of vehicle accidents, particularly vehicle versus pedestrian cases, one of the… http://precisionsim.com/blog/2015-blog-posts/mar-2015-blog-posts/caught-act-part-three/

Caught in the Act! Part Two

3D Laser Scanning – Downstream Benefits for Complex Litigation - At PSI, our method in analyzing complex crime and accident cases starts with creating the 3D Working Model. By combining an accurate 3D model of the environment, vehicles and actors with …
3D Laser Scanning – Downstream Benefits for Complex Litigation At PSI, our method in analyzing complex crime and accident cases starts with creating the 3D Working Model. By… http://precisionsim.com/blog/2015-blog-posts/mar-2015-blog-posts/caught-act-part-two/

Impossible Is Nothing – The 3D Working Model vs Complex Nighttime Reconstruction

A nighttime collision between two tractor-trailers leaves both drivers with debilitating injuries and closes the lanes of a major California highway for hours. Upon investigation, it becomes clear that one of the drivers was entering the highway from a si…
A nighttime collision between two tractor-trailers leaves both drivers with debilitating injuries and closes the lanes of a major California highway for hours. Upon investigation,… http://precisionsim.com/blog/2015-blog-posts/jan-2015-blog-posts/impossible-nothing-3d-working-model-vs-complex-nighttime-reconstruction/

The Old Way vs The Best Way – 6 Benefits of 3D Working Model & Animation over Traditional Video for Daytime/Nighttime Visibility Reconstruction

Traditionally, driver’s-eye nighttime visibility cases have been visualized for the jury via film and video. The benefits of this approach are mostly related to the use of the actual vehicles and scene elements, which allows the complex lighting and visib…
Traditionally, driver’s-eye nighttime visibility cases have been visualized for the jury via film and video. The benefits of this approach are mostly related to the use of the… http://precisionsim.com/blog/2015-blog-posts/jan-2015-blog-posts/he-old-way-vs-best-way-6-benefits-3d-working-model-animation-over-traditional-video-daytimenighttime-visibility-reconstruction/

The Statistics of Ballistics: Predicting the Shooter's Location

PSI has completed the fieldwork for our long awaited ballistic trajectory analysis and I have begun analyzing the statistical portion of the field test data. Calculating variances within and across the test conditions, looking for patterns and determining…
PSI has completed the fieldwork for our long awaited ballistic trajectory analysis and I have begun analyzing the statistical portion of the field test data. Calculating… http://precisionsim.com/blog/2014-blog-posts/dec-2014-blog-posts/statistics-ballistics-predicting-shooters-location/

CAC and CACLD Fall Seminar

Right on the heels of my return from Korea, I was off to Sonoma County where I attended the joint meetings of the California Association of Criminalists (CAC) and the California Association of Crime Lab Directors (CACLD). These two groups are focused on t…
Right on the heels of my return from Korea, I was off to Sonoma County where I attended the joint meetings of the California Association of Criminalists (CAC) and the California… http://precisionsim.com/blog/2014-blog-posts/nov-2014-blog-posts/cac-and-cacld-fall-seminar/

World Forensic Festival in Korea

The last few weeks have been a whirlwind of conferences and speaking engagements, First, was the amazing World Forensic Festival in Seoul, Korea. Jetlag was brutal, but I am very excited by what I experienced! As a forensic scientist or consultant, if you…
The last few weeks have been a whirlwind of conferences and speaking engagements. First, was the amazing World Forensic Festival in Seoul, Korea. Jet lag was brutal, but I am… http://precisionsim.com/blog/2014-blog-posts/oct-2014-blog-posts/world-forensic-festival-korea/