38
Phantom Ultrahigh-speed Camera Manual
PCC measures the distance from the Origin point to a
selected point, and the angle made by the Origin and Ox
axis of the selected point using the Distance and Angle
and Speed: Origin + 1 Point instant measurement tool.
Given the coordinates of two points on the image plane,
the distance (d) between the points is calculated using the
following formula: d=√((x2-x1)2) + (y2-y1)2).
If the Origin and the selected point are on the same im-
age, PCC will calculate distance and angle only; however,
if the Origin and the selected point are on different frames,
the software also calculates speed and angular speed.
Speed (s) is calculated using the formula: s=d/dt , where
d = measured distance, and dt = [time of the point frame]
– [time of the origin frame] if point and origin are on
different frames.
Angular speed is calculated using the formula: as=a/dt,
where a = measured angle, and dt = [time of the point
frame] – [time of the origin frame] if point and origin are
on different frames.
The ‘Angle and Angular Speed: 3 Points’ instant
measurement tool from PCC calculates the angle made
by three points (two lines with a common reference point)
while the Angle and Angular Speed: 4 Points calculates
the angle formed by four points [Pt.1 Ref.1 and Ref.2
Pt.2]; two lines without a common reference point.
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