Distance

[DDFar]

Hi!

I tried to understand the formula of distance estimation but i didn't get it.

Can you tell us.

in car distance, why "distance = (0.0397*2)/((locations[i].width)*0.00007)"

0.0397&0.00007 why this number?

thanks

[ramitix]

Distance formula:
D=(W*F)/P
Assumption: Average width of a car, W.
the focal length, F, camera "exif" value.
P is average pixel width

[DDFar]

Thank you, did you have any reference for this formula, because I can't get right meaning of W and P, even if you said W is the average width of a car and P is average pixel width !!

[AIOSYM]

@DDFar, I found the link below explain what you are asking. Hope it helps!
https://www.pyimagesearch.com/2015/01/19/find-distance-camera-objectmarker-using-python-opencv/