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Tag Cloud

forensic mappingExpert's AnalysisVehicle 3D Laser ScanGunshot Wound Modelinganimationlargest infant death settlement in californiaDetermine Driver's Eye View3D AnimationCrosswalkEyeProfessional Associationevidence documentationRadio Traffic AudioDetermine Degree of ErrorBus vs. PedestrianMistrialIllustrate Driver's Eye ViewVideo Capture Frame RateSan Francisco IntersectionCraig FriesCalifornia Association of Accident Reconstruction SpecialistsMeasurementsEmergency Deployment Recorders3D Animation over Nighttime VideoSam DuboseVisible GeometryForensic Expert Witness AssociationShadow3D Gunshot Wound Path ModelVideo AlignmentMichael BrownTImeline from AudioCamera Lense DistortionFieldworkNew Forensic TechnologyShootingSouth Lake TahoeEye Witnessconsultant.45 CaliberCone of UncertaintyComplex Accident Scene ReconstructionPhotogrammetrySide BarsISO 17020Visibility Studies3D crime scene mappingPeer-ReviewedNighttime Accident ReconstructionTiming and Location of EvidenceLitigation DeclarationsRay Tensingnighttime visibility studyDriver's Eye VideoExplosion1000 HoursReporter InjuredDr Judy MelinekPersonal InjuryLaser ScanningPlaintiff3D Working ModelThe Working ModelMedical AnimationRadio Traffic3D Animation and Video CompositingGuilty Verdictcrash scene mapping9.75 million911 Call AudioAssault RifleFEWA SecretaryExhibits Foundation7 Days on Witness StandPhotometrySeoul Koreahot topicCACLDBallistic StudyDriver's Eye View ObstructionNews VanCA2RS3Complete AnalysisVariancesObjectionsNational NewsTestimonyCalifornia District Attorneys Association3d VisualizationSpecific CalculationsExemplar Life Sized IntersectionAnimation over VideodepositionCACCalTransCross ExaminationMedicalConstruction AccidentNighttime VideoOld Way vs Best WayCDAA Winter ConferenceForensic Animationbody camera for deputies and officers911 CallWitness Testimonysacramento settlementTrajectoryOfficer Involved ShootingCriminalistMonte Carlo Methodinfant death settlement.223AR15First Degree Murder402 HearingAnalysisVideo AnalysisLaser ScanTrace Back AnalysisNietoBallistics AnalysisFerguson MOExpert WitnessError AnalysisCCSFTrajectory Rods3D Laser ScanningRadiologicalforensic expertCrosswalk in Shadowforensic consultantMarco Topete MurderSurgical AnimationReconstructionGPS AnalysisAccidental ShootingExcellent PresentationsTrace back to shooter's locationprofessionalOISCapital CrimeLaser Assisted PhotogrammetryForensic Science InternationalDavid vs. Goliath Casereconstruction analysisBody CameraVehicle Crush AnalysiscollaborativeBallistic Trajectory AnalysisforensicDemonstrative Exhibitsnorthern california chapterSight ObstructionsPhysical EvidenceCamera Lense Field of ViewOperator LiabilityWitness StandOhio vs TensingCDAASurgicalShadow Analysis$84,000,000 Verdicts7.6 Mile PursuitFEWAscientific evidencePower Line Wire StrikeCalifornia Association of CriminalistsIncident and Exemplar VehiclesConstruction Workeraccident reconstructionfilmNieto VerdictExpert's PreparationAutopsy ReportDefenseCNNby eyeSingle Vehicle AccidentMuni Bus On-Board Camera SystemWire Strike2014 Annual ConferenceCrush AnalysisLitigationCalifornia Association of Crime Lab DirectorsWorld Forensic FestivalShooter's LocationDownstream Benefits of 3D Laser Scanningseachao


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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/