L = 2 * tan (FOV° / 2) * DIST
FOV° = 2 * tan
-1
( L / ( 2 * DIST))
A little help to calculate the surface seen by a webcam at a fixed distance.
DIST :
cm
FOV :
°
webcam resolution:
horizontal pixels *
vertical pixels
Results :
Surface :
cm *
cm
pixels / cm :
surface dpi :
dpi
2008 / emoc /
codelab.fr
