Category List


Tag List

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

Tag Cloud

MeasurementsEmergency Deployment Recordersnorthern california chapterOperator LiabilityCamera Lense Field of View3D Animation over Nighttime VideoVisibility StudiesShadow AnalysisExemplar Life Sized Intersection3Personal InjuryCraig Friesforensic expertnighttime visibility studyevidence documentationWorld Forensic FestivalCCSFSam DuboseShooter's LocationExplosionCone of Uncertaintylargest infant death settlement in californiaLaser Assisted PhotogrammetryCross ExaminationShootingseachaoConstruction WorkerCrosswalkExcellent Presentations7.6 Mile PursuitDetermine Degree of ErrorCACLDComplex Accident Scene ReconstructionReconstructionFEWAShadowVehicle 3D Laser ScanMichael BrownPhotogrammetryGPS AnalysisBody CameraNew Forensic TechnologyNighttime VideoVideo Alignment.223CDAAPeer-ReviewedRadio Traffic AudioSeoul KoreaCalifornia District Attorneys Associationprofessional1000 HoursWire Strike402 HearingDr Judy MelinekLitigation Declarationssacramento settlementAssault RifleConstruction AccidentforensicBallistic StudyExpert's Preparation3D crime scene mappingconsultantSide Barsreconstruction analysisNational NewsDefenseDetermine Driver's Eye ViewProfessional AssociationAR15CNNForensic AnimationWitness TestimonyDriver's Eye Video911 Call AudioCA2RSRay TensingSpecific Calculationsby eyeBallistic Trajectory AnalysisIncident and Exemplar VehiclesMonte Carlo MethodVisible Geometry3D Animation and Video Compositinghot topicBallistics AnalysisCalTransforensic mappingForensic Science InternationalEye WitnessTrace Back AnalysisTrajectory Rods3D AnimationSan Francisco IntersectionFirst Degree MurderMedical AnimationVariances3D Gunshot Wound Path ModelRadiological9.75 millionIllustrate Driver's Eye ViewTrajectoryFieldworkdeposition$84,000,000 VerdictsanimationCrosswalk in ShadowNews VanAnimation over VideoEye3d VisualizationcollaborativePower Line Wire StrikeVehicle Crush AnalysisTestimonyaccident reconstructionLaser ScanningWitness Standbody camera for deputies and officersComplete AnalysisNighttime Accident ReconstructionExhibits Foundation2014 Annual ConferenceFerguson MORadio Traffic3D Working ModelMarco Topete MurderPhotometryinfant death settlementDownstream Benefits of 3D Laser ScanningDriver's Eye View ObstructionDavid vs. Goliath CaseISO 17020Error Analysis7 Days on Witness StandCrush AnalysisVideo Capture Frame RateTImeline from AudioMuni Bus On-Board Camera SystemCalifornia Association of Crime Lab DirectorsGuilty VerdictExpert WitnessForensic Expert Witness AssociationNieto VerdictOhio vs TensingAnalysisSingle Vehicle Accidentforensic consultantReporter InjuredObjectionsLaser ScanMedicalOld Way vs Best WayNietoAccidental ShootingSurgicalBus vs. PedestrianTrace back to shooter's locationVideo AnalysisSight ObstructionsPlaintiffSurgical Animation3D Laser ScanningDemonstrative ExhibitsfilmGunshot Wound ModelingExpert's AnalysisCriminalistMistrialSouth Lake TahoeOISLitigationcrash scene mappingCapital CrimeCalifornia Association of Accident Reconstruction SpecialistsThe Working ModelCalifornia Association of CriminalistsFEWA SecretaryTiming and Location of EvidenceCDAA Winter ConferenceOfficer Involved ShootingPhysical EvidenceCACCamera Lense Distortion.45 Caliber911 CallAutopsy Reportscientific evidence


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/