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Pete Stothart
10-30-1998, 12:17 AM
Hello Biomch-L Readers,

I am requesting your help on an issue of accuracy in 3D kinematic data
analysis. We are conducting a project using 60 and 200 hz video cameras
to capture images of an activity in a field width of 1.5 - 3 metres. We
have determined that we can see our joint/segment markers sufficiently
well with the 2 cameras but we are trying to decide whether we need more
than two cameras to achieve maximum accuracy. The research literature
does not appear to clearly indicate whether greater accuracy can be
achieved with 3 or 4 cameras as opposed to 2 cameras.

Is anyone out there aware of studies that can help us with this
question? Does anyone have first hand experience with the issue? Thanks
for any assistance you can give us. I will summarize the responses I
receive.

Sincerely - Pete Stothart

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J.Peter Stothart
School of Human Kinetics
University of Ottawa
Ottawa, On K1N 6N5
(613) 562-5800 ext4264
(613) 562-5149 fax
(819) 827-4794 (home)

"In skating on thin ice, our safety is in our speed"
Ralph WaldoEmerson




Hello Biomch-L Readers,
I am requesting your help on an issue of accuracy in 3D kinematic data
analysis. We are conducting a project using 60 and 200 hz video cameras
to capture images of an activity in a field width of 1.5 - 3 metres. We
have determined that we can see our joint/segment markers sufficiently
well with the 2 cameras but we are trying to decide whether we need more
than two cameras to achieve maximum accuracy. The research literature
does not appear to clearly indicate whether greater accuracy can be achieved
with 3 or 4 cameras as opposed to 2 cameras.
Is anyone out there aware of studies that can help us with this question?
Does anyone have first hand experience with the issue? Thanks for any assistance
you can give us. I will summarize the responses I receive.
Sincerely - Pete Stothart
--
*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+*+ *+*+*+*+
J.Peter Stothart
School of Human Kinetics
University of Ottawa
Ottawa, On  K1N 6N5
(613) 562-5800 ext4264
(613) 562-5149 fax
(819) 827-4794 (home)
"In skating on thin ice, our safety is in our speed"
     Ralph WaldoEmerson