not able to load camera-calib-file

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I was doing ARToolKit's two step method Camera-Calibration.

What can it cause, that the "artoolkitplus" application is unable to  
load the resulting "dfk21af04.dat" file?

there is not really an interpretable error message.
getting a false back of the following method:
FTracker->init(&FCameraFile[0],  1.0f, 1000.0f)

perhaps somebody can take a look at the file.

kind regards
Norbert

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From:	Norbert <norbert.riedelsheimer@h ............>	Received:	Apr 3, 2007
To	artoolkit@h ..................
Subject:	not able to load camera-calib-file
--Apple-Mail-9--269817546 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed I was doing ARToolKit's two step method Camera-Calibration. What can it cause, that the "artoolkitplus" application is unable to load the resulting "dfk21af04.dat" file? there is not really an interpretable error message. getting a false back of the following method: FTracker->init(&FCameraFile[0], 1.0f, 1000.0f) perhaps somebody can take a look at the file. kind regards Norbert --Apple-Mail-9--269817546 Content-Transfer-Encoding: base64 Content-Type: application/octet-stream; x-unix-mode=0755; name=dfk21af04.dat Content-Disposition: attachment; filename=dfk21af04.dat AAACgAAAAeBAhu3ERw56gL/Y5Mh/NRacQHQM42NYXmEAAAAAAAAAAAAAAAAAAAAAQIbC0R5liiFA Y8Vy6bQn7wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD/wAAAAAAAAAAAAAAAAAABAd3AAAAAAAEBs IAAAAAAAQD2zMzMzMzM/8ECLdepn6A== --Apple-Mail-9--269817546--

From:	Daniel Wagner <daniel@i ...............>	Received:	Apr 3, 2007
To	ARToolKit Mailinglist <artoolkit@h ..................>
Subject:	Re: not able to load camera-calib-file
hi Norbert, we generally advice using the Matlab camera calibration toolbox to calibrate cameras for ARToolKitPlus. It gives more precise results with a lot less work... Daniel

From:	"Victor Ng-Thow-Hing" <victorngthowhing@y ........>	Received:	Apr 5, 2007
To	"'Norbert'" <norbert.riedelsheimer@h ............>, <artoolkit@h ..................>
Subject:	RE: not able to load camera-calib-file
Hi Norbert, I ran into a problem of not being able to load my generated calibration = file also. When I tried to debug things, I discovered that the calibration = matrix being loaded had a negative matrix entry where a positive one was = expected, and so the init returned false. I don't know why it did this. Using the matlab generated calibration file worked for me. Regards, Victor -----Original Message----- From: owner-artoolkit@h .................. [mailto:owner-artoolkit@h ..................] On Behalf Of Norbert Sent: Tuesday, April 03, 2007 6:11 AM To: artoolkit@h .................. Subject: not able to load camera-calib-file I was doing ARToolKit's two step method Camera-Calibration. What can it cause, that the "artoolkitplus" application is unable to =20 load the resulting "dfk21af04.dat" file? there is not really an interpretable error message. getting a false back of the following method: FTracker->init(&FCameraFile[0], 1.0f, 1000.0f) perhaps somebody can take a look at the file. kind regards Norbert