FreeTrack Forum - Different Angle for Left and Right

Home

Welcome, you're not connected. ( Log in - Register )

FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Different Angle for Left and Right

RSS > Different Angle for Left and Right

luca	#1 26/10/2007 - 15h19 Top
Class : Habitué Posts : 54 Registered on : 03/09/2007 Off line	Using 3 leds clip in the left ear, the movement for left and right is very different. The natural horizontal neck movement produce an inequal angle of rotation for left and right. I think, but I'm not sure that this problem could be amplified by a greater distance from the webcam. This problem seems to affect "only" the Yaw movement Stay FREE
Kestrel	#2 26/10/2007 - 16h03 Top
Class : Webmaster (admin) Posts : 780 Registered on : 13/07/2007 Off line	luca @ 26/10/2007 - 15h19 a dit: Using 3 leds clip in the left ear, the movement for left and right is very different. The natural horizontal neck movement produce an inequal angle of rotation for left and right. I've never encountered this. Clip rotation is independent of the clip location so yaw, pitch and roll are always balanced. What IS affected is the accuracy, you'll find that right yaw is more accurate than left yaw for a left clip mount. This is what your images are showing, they have nothing to do with the observed angle of the clip. Support FreeTrack
luca	#3 26/10/2007 - 16h36 Top
Class : Habitué Posts : 54 Registered on : 03/09/2007 Off line	Thx Kestrel ok, but turn at my left is much more harder than turn at my right.btw I will try some other position for webcam. What do u mean with accuracy? right rotation is better than left? Stay FREE
Kestrel	#4 28/10/2007 - 03h41 Top
Class : Webmaster (admin) Posts : 780 Registered on : 13/07/2007 Off line	luca @ 26/10/2007 - 15h36 a dit: but turn at my left is much more harder than turn at my right. I will try some other position for webcam. What do u mean with accuracy? right rotation is better than left? Left rotation has less resolution than right rotation for a left clip mount, so left movement will be slightly more granular and less smooth. I assume this is what you mean by 'harder to turn' because the maximum limit angles left-right must be equal. Webcam position doesn't affect the measured rotation angle. Single point tracking can produce unbalanced yawing if the point is mounted to the side of the head. Support FreeTrack

FreeTrack Forum > FreeTrack : English Forum > Support : Tracking System > Different Angle for Left and Right

> Stats

1 user(s) connected during the last 10 minutes (0 member(s) and 1 guest(s)).