ARTOOLKITPLUS - Choosing appropriate values for Tracker Initialization

Hello, with id-based markers printed with 8 cm side, what should be
the values of PATTERN_SIZE_X, PATTERN_SIZE_Y and PATTERN_SAMPLE_NUM
used to initialize a Tracker object?
Thanks.

TintonLab wrote:
> Hello, with id-based markers printed with 8 cm side, what should be
> the values of PATTERN_SIZE_X, PATTERN_SIZE_Y and PATTERN_SAMPLE_NUM
> used to initialize a Tracker object?
You are mixing up two things: the size of your marker in cm has nothing
to do with those settings you mention above.
PATTERN_SIZE_X and PATTERN_SIZE_Y must be either 6/6, 12/12 or 18/18 if
you want to use simple-id or BCH markers.
PATTERN_SIZE_NUM, can be a multiple of this and will also be
downsampled. We generally just use 6/6/6 for those values which gives
fine results...

If you want to use the original ARToolKit template markers ("images")
then use 16/16 and a multiple of 16.

Daniel

From:	TintonLab <tintonlab@g ........>	Received:	Jun 5, 2007
To	artoolkit@h ..................
Subject:	ARTOOLKITPLUS - Choosing appropriate values for Tracker Initialization
Hello, with id-based markers printed with 8 cm side, what should be the values of PATTERN_SIZE_X, PATTERN_SIZE_Y and PATTERN_SAMPLE_NUM used to initialize a Tracker object? Thanks.

From:	Daniel Wagner <daniel@i ...............>	Received:	Jun 5, 2007
To	ARToolKit Mailinglist <artoolkit@h ..................>
Subject:	Re: ARTOOLKITPLUS - Choosing appropriate values for Tracker Initialization
TintonLab wrote: > Hello, with id-based markers printed with 8 cm side, what should be > the values of PATTERN_SIZE_X, PATTERN_SIZE_Y and PATTERN_SAMPLE_NUM > used to initialize a Tracker object? You are mixing up two things: the size of your marker in cm has nothing to do with those settings you mention above. PATTERN_SIZE_X and PATTERN_SIZE_Y must be either 6/6, 12/12 or 18/18 if you want to use simple-id or BCH markers. PATTERN_SIZE_NUM, can be a multiple of this and will also be downsampled. We generally just use 6/6/6 for those values which gives fine results... If you want to use the original ARToolKit template markers ("images") then use 16/16 and a multiple of 16. Daniel