Dear AR colleague:
 
   Now I am trying to play with the tracking system.
 But I found the different tracking systems from the
 different company give the different definition  and
 order of euler angles. 
 
  some use the order of the 3space euler angle
 rotation
 sequence is azimuth,elevation, and roll. 
 
  some use the order of 3space euler angle rotation
 sequence is pitch,yaw,roll. 
 
  since according to some literature yaw=azimuth 
   elevation =pitch
 
  so it seems the reluts is unequal. 
 
   Because it is relevant to the establishment of
 rotation matrix, it is important to kow exact order
 of  rotation, so does anyone have clear and uniform
idea about that ? 

 I know it is relevant to the definition of 3
coordinate , but even this , different company has
their definition about the 3 coordinate. 

  
 
   thanks in advance
 
 
  calvin  


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