Jeff Suway: quantifying luminance with a camera, video analysis, & his love of retroreflective tape

Описание: On this episode, I interviewed Jeff Suway, proprietor of JS Forensics and collision reconstruction/human factors polymath. Jeff is on my short list of people to call if I need help deep diving some topic, whether it's EDR, video analysis, or conspicuity.

In this episode we'll discuss how Jeff got into recon, the current state of his firm, Jeff's real love, retro reflective tape, quantifying luminance with a camera, video analysis, and much more.

A rough transcript of the podcast can be found here: https://lightpointdata.com/data-drive...

You can find the audio only version of this podcast on your favorite platform: https://rss.com/podcasts/datadriven/

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Connect with Jeff:   / jeffrey-suway-p-e-01664b18  

JS Forensics: https://www.jsforensics.com/

Nitere: https://www.niteresoftware.com/

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Timeline of Topics

00:00:00 – Jeff’s background and introduction to forensics
00:19:40 – JS Forensics: Jeff’s vision for the company and his current team
00:31:10 - Jeff’s fascination with retroreflective tape
00:44:00 – Quantifying luminance with a consumer grade camera
00:58:25 – Presenting in the courtroom
01:01:18 – How to take contrast measurements
01:18:45 – Nitere applications
01:27:03 – Necessities for a recon trying to do nighttime analysis
01:38:49 – Methods and tools Jeff’s experimenting with
01:41:58 – How Jeff stays in touch with the latest tech in the industry
01:46:03 – Rapid fire: What Jeff uses point clouds for, best investment under $5,000, and most used papers

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Papers Discussed (in order of appearance)

Suway, J., Suway, S., “A Method for digital Video Camera Calibration for Luminance Estimation” Society of Automotive Engineers (SAE) World Congress and Exhibition, 2017, SAE Paper No. 2017-01-1368

Suway, J., Suway, S., "A More Robust Method for Digital Video Camera Calibration for Luminance Estimation" SAE Technical Paper 2022-01-0802, 2022

Muttart, J., "Factors that Influence Drivers' Response Choice Decisions in Video Recorded Crashes," SAE Technical Paper 2005-01-0426, 2005, https://doi.org/10.4271/2005-01-0426.

Cipriani, A., Bayan, F., Woodhouse, M., Cornetto, A. et al., "Low Speed Collinear Impact Severity: A Comparison Between Full Scale Testing and Analytical Prediction Tools with Restitution Analysis," SAE Technical Paper 2002-01-0540, 2002, https://doi.org/10.4271/2002-01-0540.

Suway, J., Welcher, J., “A Quantitative Method for Accurately Depicting still photographs or video of a night-time scene Utilizing Equivalent Contrast” Society of Automotive Engineers (SAE) World Congress and Exhibition, 2016, SAE Paper No. 2016-01-1463.

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Equipment / Tools Discussed

3ds Max: https://www.autodesk.com/products/3ds...

Blender: https://www.blender.org/

HVE: https://edccorp.com/index.php/hve-sof...

Konica Minolta spot meter: https://sensing.konicaminolta.us/us/t...

MADYMO: https://plm.sw.siemens.com/en-US/simc...

Matlab: https://www.mathworks.com/products/ma...

Muttart’s Nighttime Scene Contrast Gradient: https://driverresearchinstitute.com/p...

PC-Crash: https://www.pc-crash.com/

Response: https://driverresearchinstitute.com/s...

Sony a7S II: https://www.sony.com/lr/electronics/i...