How can i measure a vector's size, angle and direction that i found using Farneback's method?

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abbxucy11
abbxucy11 2016-8-31
评论： Manasi Pathade 2019-4-11
For this simple example of Farneback's method, how can i measure the vector's characteristics?

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Swarooph
Swarooph 2016-8-31
The flow variable output from estimateFlow function is of type opticalFlow and has all the information. You can access them using the dot (.) operator.
For e.g.
vx = flow.Vx;
vy = flow.Vy;
or = flow.Orientation;
mag = flow.Magnitude;
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Manasi Pathade
Manasi Pathade 2019-4-11
Which equation is used to compute flow.Orientation?
Is it atan2 or atan2d?
I wanted to know, what are the reference directions (0,90,180,270) in OpticalFlow?
Please help

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