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Hi Everyone,
I recently performed a camera calibration with the Matlab Calibration
toolkit for an Opteon camera. When creating a new camera calibration file
from this data, the ARToolKitPlus web site states:
The ASCII-file containing the camera calibration parameters should look as
follows:
[line1]: ARToolKitPlus_CamCal_Rev02
[line2]: xsize ysize cc_x cc_y fc_x fc_y kc1 kc2 kc3 kc3 kc5 kc6 iter
xsize, ysize: calibrated frame dimensions (does not have to match the frame
dimensions at runtime)
cc_x, cc_y: principal point location (in pixels)
fc_x, fc_y: focal length (in pixels)
kc1..kc6: radial/tangential distortion coefficients (kc6 currently not in
use)
iter: number of iterations for distortion compensation
My question is: For the kc1..kc6, I only have 5 distortion parameters from
the Matlab calibration. Should I assume kc6 is 0?
I'm not sure what the iter (number of iterations for distortion
compensation) value should be? Is this a specific parameter of the Lens
Undistortion
lookup table in ARToolkitPlus? I'm not sure how to interpret the meaning of
iter.
Regards,
Victor
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<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D829275723-14052007></SPAN>H<SPAN=20
class=3D829275723-14052007>i Everyone,</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D829275723-14052007></SPAN><SPAN=20
class=3D829275723-14052007></SPAN>I<SPAN class=3D829275723-14052007> =
recently=20
performed a camera calibration with the Matlab Calibration toolkit for =
an Opteon=20
camera. When creating a new camera calibration file from this data, the=20
ARToolKitPlus web site states:</SPAN></FONT></DIV><FONT face=3DArial =
size=3D2><SPAN=20
class=3D829275723-14052007></SPAN>
<DIV><BR><FONT face=3D"Times New Roman" size=3D3>The ASCII-file =
containing the=20
camera calibration parameters should look as follows: <BR>[line1]:=20
ARToolKitPlus_CamCal_Rev02 <BR>[line2]: xsize ysize cc_x cc_y fc_x fc_y =
kc1 kc2=20
kc3 kc3 kc5 kc6 iter <BR><BR>xsize, ysize: calibrated frame dimensions =
(does not=20
have to match the frame dimensions at runtime) <BR>cc_x, cc_y: principal =
point=20
location (in pixels) <BR>fc_x, fc_y: focal length (in pixels) =
<BR>kc1..kc6:=20
radial/tangential distortion coefficients (kc6 currently not in use) =
<BR>iter:=20
number of iterations for distortion compensation </FONT></DIV>
<DIV><FONT face=3D"Times New Roman" size=3D3></FONT> </DIV>
<DIV><FONT face=3D"Times New Roman" size=3D3></FONT> </DIV>
<DIV><SPAN class=3D829275723-14052007><FONT face=3D"Times New Roman" =
size=3D3>My=20
question is: For the kc1..kc6, I only have 5 distortion parameters from =
the=20
Matlab calibration. Should I assume kc6 is 0?</FONT></SPAN></DIV>
<DIV><SPAN class=3D829275723-14052007><FONT face=3D"Times New Roman"=20
size=3D3></FONT></SPAN> </DIV>
<DIV><SPAN class=3D829275723-14052007>I'm not sure what the iter (number =
of=20
iterations for distortion compensation) value should be? Is this a =
specific=20
parameter of the Lens Undistortion </SPAN></DIV>
<DIV><SPAN class=3D829275723-14052007>lookup table in ARToolkitPlus? I'm =
not sure=20
how to interpret the meaning of iter.</SPAN></DIV>
<DIV><SPAN class=3D829275723-14052007></SPAN> </DIV>
<DIV><SPAN class=3D829275723-14052007>Regards,</SPAN></DIV>
<DIV><SPAN =
class=3D829275723-14052007>Victor</SPAN></FONT></DIV></BODY></HTML>
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