Head Pose (unit of Yaw, Pitch, Roll) (Point of View)

Question

Hello,   
  
My question is about Head Pose in AWS Rekognition.   
  
What is the unit of Yaw, Pitch, Roll (degree or radian)? and what is their range?   
  
And also, are they from the camera's point of view?  
  
For example, if the value of Yaw is -10, what is the rotation direction (right, left)? And is it relative to camera or frame?  
  
Thank you.   
Mohammad

Head Pose (unit of Yaw, Pitch, Roll) (Point of View)?

Accepted Answer

Hello,   
  
The head pose parameters (Yaw, Pitch and Roll) are specified in degrees. Each of them can take a value within the range of -180 to 180.  https://docs.aws.amazon.com/rekognition/latest/dg/API_Pose.html  
  
The values for Pitch, Yaw and Roll are specified with the Camera as the point of reference.   
  
A negative value for Pitch mean the camera is facing up and a positive value means the camera is facing down.  
A negative value for Yaw means the camera is facing left and a positive value means the camera is facing to the right.   
  
Camera setting recommendations can be found in this document: https://docs.aws.amazon.com/rekognition/latest/dg/recommendations-camera-image-video.html

Head Pose (unit of Yaw, Pitch, Roll) (Point of View)

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