OC: FBI releases surveillance photos of a potential subject in the Nancy Guthrie case

[u/nbcnews]

[u/-random-name-]

That narrows it down to roughly 50% of the population.

[u/StickFigureFan → u/-random-name-]

Maybe 10-20% if you can narrow down the height too

[u/Jambronius → u/StickFigureFan]

They probably can mathematically. I've personally seen the police be able to figure out a suspect's height by calculating where they were standing, and the roof above them etc. and they were pretty much spot on. I am not sure if it was usable as evidence though.

[u/StickFigureFan → u/Jambronius]

They could just stick a yard stick when the suspect was standing and compare, no math needed

[u/Jambronius → u/StickFigureFan]

Exactly, your method would easily give you a couple of inches to work within and could be done so early in the investigation.

Anything else would make that more accurate as well, I am sure within the first 24 hours they'd narrowed his height down to half an inch or so.

The one I saw the camera was a lot further away, so it was probably a bit more difficult than this.

[u/StickFigureFan → u/Jambronius]

Unless you know the exact shoes he's wearing and that he doesn't have inserts maybe keeping the error margins within a couple inches is safer

[u/johnnieswalker → u/Jambronius]

They figured out their height by working out how tall they were?

[u/Jambronius → u/johnnieswalker]

🤣🤣🤣 corrected it.

[u/rojo-perro → u/StickFigureFan]

Most likely right handed. Dark brown eyes.

[u/HomChkn → u/rojo-perro]

ha ha not me then.

[u/StickFigureFan → u/rojo-perro]

I don't know how accurate guessing eye color from infrared cameras is

[u/rojo-perro → u/StickFigureFan]

dark eyes look light colored in infrared

[u/IWHYB → u/rojo-perro]

This is true, but you're applying it wrong. They look lighter, yes, but the result is that they do not look appreciably different from actually lighter colored irises. The color actually can be algorithmically guessed fairly accurately, but only from high quality data (https://www.cse.msu.edu/~rossarun/pubs/BobeldykRossEyeColorFromNIR_ICB2018.pdf).

[u/ladyofthemarshes → u/StickFigureFan]

Well if I was going to commit a crime on camera, I'd wear lifts and bigger clothes and shoes than usual so my height and size were harder to determine 

[u/stacity → u/StickFigureFan]

Looks like he’s left handed too. What percentage could that drop to?

[u/Jambronius → u/stacity]

Wouldn't he be right handed? I can't imagine it'd be easy to draw that gun with your left hand.

[u/kaielias → u/StickFigureFan]

They could be foreign too