Huh?  The ARToolkit allows non-coplanar multi-marker panels.  Lots of  
people (including us and Wayne, for example) have done cubes with  
markers on all sides, and other folks have done non-co-planar ...  
each marker must be planar, of course.

Perhaps you are thinking of the RPP code, or the base ARToolkit  
single marker pose estimator?  But, the multi-marker one should be  
fine ...

On Apr 11, 2007, at 7:26 AM, Daniel Wagner wrote:

> henry domis wrote:
>> I would like to use multimarkers but not on the single paper, for
>> exemple I would like to manage a corner with relationship given  
>> thanks
>> to the multimarker file (as paste at the end). Do I have to configure
>> the matrices in the textfile so that the position of the marker B is
>> 90 deg rotate compare to the marker A, or do I have to skip this idea
>> an make my own relation between markers?
> Due to the way ARToolKit works, all those markers have to be co- 
> planar.
> So although the config file allows you to specify a general pose for
> each marker it will only work if all marker corners are co-planar.
>
> Assuming that you follow the ARToolKit conventation that Z means  
> upwards
> (out of the marker plane): The Z value for the translation (bottom  
> right
> coordinate) must be same for all markers and the left 3x3 sub-matrix
> must only contain rotations around the Z angle.
>
> Daniel

Ours was implemented using the built in multimarker features.

On Apr 11, 2007, at 7:35 AM, Daniel Wagner wrote:

> Blair MacIntyre wrote:
>> Huh?  The ARToolkit allows non-coplanar multi-marker panels.  Lots of
>> people (including us and Wayne, for example) have done cubes with
>> markers on all sides, and other folks have done non-co-planar ...  
>> each
>> marker must be planar, of course.
> Are you sure those non-planar panels where implemented using the
> built-in ARTK multi-marker feature?
> Nobody prevents you from combining tracking results from multiple
> markers on your own...
>
> Daniel

yeah, i've done this as well.  henry, in my experience, the hard part is 
accurately measuring the transformations between markers when they're not 
coplanar.  what really helps is to write a calibration program that 
treats each marker individually, records all their poses, and then 
computes best relative poses for each marker and outputs the appropriate 
multimarker configuration file.

-steve diverdi
-sdiverdi@c ..........

> Huh?  The ARToolkit allows non-coplanar multi-marker panels.  Lots of 
> people (including us and Wayne, for example) have done cubes with 
> markers on all sides, and other folks have done non-co-planar ... each 
> marker must be planar, of course.
>
> Perhaps you are thinking of the RPP code, or the base ARToolkit single 
> marker pose estimator?  But, the multi-marker one should be fine ...
>
> On Apr 11, 2007, at 7:26 AM, Daniel Wagner wrote:
>
>> henry domis wrote:
>>> I would like to use multimarkers but not on the single paper, for
>>> exemple I would like to manage a corner with relationship given thanks
>>> to the multimarker file (as paste at the end). Do I have to configure
>>> the matrices in the textfile so that the position of the marker B is
>>> 90 deg rotate compare to the marker A, or do I have to skip this idea
>>> an make my own relation between markers?
>> Due to the way ARToolKit works, all those markers have to be co-planar.
>> So although the config file allows you to specify a general pose for
>> each marker it will only work if all marker corners are co-planar.
>> 
>> Assuming that you follow the ARToolKit conventation that Z means upwards
>> (out of the marker plane): The Z value for the translation (bottom right
>> coordinate) must be same for all markers and the left 3x3 sub-matrix
>> must only contain rotations around the Z angle.
>> 
>> Daniel

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Hi ARToolKit users!
I would like to use multimarkers but not on the single paper, for exemple I would like to manage a corner with relationship given thanks to the multimarker file (as paste at the end). Do I have to configure the matrices in the textfile so that the position of the marker B is 90 deg rotate compare to the marker A, or do I have to skip this idea an make my own relation between markers?

Thanks!

#the number of patterns to be recognized
6

#marker 1
Data/multi/patt.a
40.0
0.0 0.0
1.0000 0.0000 0.0000 0.0000
0.0000 1.0000 0.0000 0.0000
0.0000 0.0000 1.0000 0.0000

#marker 2
Data/multi/patt.b
40.0
0.0 0.0
1.0000 0.0000 0.0000  100.0000
0.0000 1.0000 0.0000    0.0000
0.0000 0.0000 1.0000    0.0000

#marker 3
Data/multi/patt.c
40.0
0.0 0.0
1.0000 0.0000 0.0000  200.0000
0.0000 1.0000 0.0000    0.0000
0.0000 0.0000 1.0000    0.0000

#marker 4
Data/multi/patt.d
40.0
0.0 0.0
1.0000 0.0000 0.0000    0.0000
0.0000 1.0000 0.0000 -100.0000
0.0000 0.0000 1.0000    0.0000

#marker 5
Data/multi/patt.g
40.0
0.0 0.0
1.0000 0.0000 0.0000  100.0000
0.0000 1.0000 0.0000 -100.0000
0.0000 0.0000 1.0000    0.0000

#marker 6
Data/multi/patt.f
40.0
0.0 0.0
1.0000 0.0000 0.0000  200.0000
0.0000 1.0000 0.0000 -100.0000
0.0000 0.0000 1.0000    0.0000



Henry Domis
  rainiou@y .......
   

             
---------------------------------
 Découvrez une nouvelle façon d'obtenir des réponses à toutes vos questions ! Profitez des connaissances, des opinions et des expériences des internautes sur Yahoo! Questions/Réponses.
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Hi ARToolKit users!<br>I would like to use multimarkers but not on the single paper, for exemple I would like to manage a corner with relationship given thanks to the multimarker file (as paste at the end). Do I have to configure the matrices in the textfile so that the position of the marker B is 90 deg rotate compare to the marker A, or do I have to skip this idea an make my own relation between markers?<br><br>Thanks!<br><br>#the number of patterns to be recognized<br>6<br><br>#marker 1<br>Data/multi/patt.a<br>40.0<br>0.0 0.0<br>1.0000 0.0000 0.0000 0.0000<br>0.0000 1.0000 0.0000 0.0000<br>0.0000 0.0000 1.0000 0.0000<br><br>#marker 2<br>Data/multi/patt.b<br>40.0<br>0.0 0.0<br>1.0000 0.0000 0.0000&nbsp; 100.0000<br>0.0000 1.0000 0.0000&nbsp;&nbsp;&nbsp; 0.0000<br>0.0000 0.0000 1.0000&nbsp;&nbsp;&nbsp; 0.0000<br><br>#marker 3<br>Data/multi/patt.c<br>40.0<br>0.0 0.0<br>1.0000 0.0000 0.0000&nbsp; 200.0000<br>0.0000 1.0000 0.0000&nbsp;&nbsp;&nbsp; 0.0000<br>0.0000 0.0000
 1.0000&nbsp;&nbsp;&nbsp; 0.0000<br><br>#marker 4<br>Data/multi/patt.d<br>40.0<br>0.0 0.0<br>1.0000 0.0000 0.0000&nbsp;&nbsp;&nbsp; 0.0000<br>0.0000 1.0000 0.0000 -100.0000<br>0.0000 0.0000 1.0000&nbsp;&nbsp;&nbsp; 0.0000<br><br>#marker 5<br>Data/multi/patt.g<br>40.0<br>0.0 0.0<br>1.0000 0.0000 0.0000&nbsp; 100.0000<br>0.0000 1.0000 0.0000 -100.0000<br>0.0000 0.0000 1.0000&nbsp;&nbsp;&nbsp; 0.0000<br><br>#marker 6<br>Data/multi/patt.f<br>40.0<br>0.0 0.0<br>1.0000 0.0000 0.0000&nbsp; 200.0000<br>0.0000 1.0000 0.0000 -100.0000<br>0.0000 0.0000 1.0000&nbsp;&nbsp;&nbsp; 0.0000<br><br><BR><BR><DIV><STRONG><FONT face=arial size=-1>Henry Domis</FONT></STRONG></DIV>  <DIV><A href="mailto:rainiou@y ......."><FONT face=arial size=-1>rainiou@y .......</FONT></A></DIV>  <DIV>&nbsp;</DIV><p>&#32;


      

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henry domis wrote:
> I would like to use multimarkers but not on the single paper, for
> exemple I would like to manage a corner with relationship given thanks
> to the multimarker file (as paste at the end). Do I have to configure
> the matrices in the textfile so that the position of the marker B is
> 90 deg rotate compare to the marker A, or do I have to skip this idea
> an make my own relation between markers?
Due to the way ARToolKit works, all those markers have to be co-planar.
So although the config file allows you to specify a general pose for
each marker it will only work if all marker corners are co-planar.

Assuming that you follow the ARToolKit conventation that Z means upwards
(out of the marker plane): The Z value for the translation (bottom right
coordinate) must be same for all markers and the left 3x3 sub-matrix
must only contain rotations around the Z angle.

Daniel

Blair MacIntyre wrote:
> Huh?  The ARToolkit allows non-coplanar multi-marker panels.  Lots of
> people (including us and Wayne, for example) have done cubes with
> markers on all sides, and other folks have done non-co-planar ... each
> marker must be planar, of course.
Are you sure those non-planar panels where implemented using the
built-in ARTK multi-marker feature?
Nobody prevents you from combining tracking results from multiple
markers on your own...

Daniel