not an issue. Need help in translating the angles. about head-pose-estimation HOT 9 CLOSED

Oh okay. I'll read it. Also, Can you please explain why you have divided pitch, roll, and yaw by 180 here

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I think a lot of experiments are required before we make this decision. Those angles are not very accurate as they are rough estimation from the face landmarks and a general 3D model. Higher value means larger pose, but it is up to the application to set the threshold of these values. Also, nodding, is a series of head movement and brings in another variable time. I currently do not have a good idea of how to define nod. Sorry about that.

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@youjinChung Yes, if I still remember it right.

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The OpenCV documentation had provided a really good explanation of this topic here:
https://docs.opencv.org/4.4.0/d9/d0c/group__calib3d.html

Pay attention to the chapter: Detailed Description

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Also, what research paper have you used? I wanted to go through that and understand how the values of pitch and roll work if that makes sense.

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The angles are normalized before saving. What do you mean "how the values of pitch and roll work"? I don’t get it.

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"How the values of pitch and roll work" --- Let me explain my question. I mean to say when do we consider a head to make a significant movement?

For example- Let say, we get value of roll to be 5 degrees at a time "t." Now is that 5 degrees enough to make a statement saying that head nodded towards the left side? If the value of roll is 20 degrees then it's a significant difference and we can consider that head tilted to the left, but should insignificant angles like 5-10 degrees should mean the same?

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No problem! Thanks a lot for replying!

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The angles are normalized before saving. What do you mean "how the values of pitch and roll work"? I don’t get it.

Hello @yinguobing,

does that mean actual degrees are the ones before normalized?

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