I have read the doc file, and tried to understand the source code.
In ARMarkerInfo struct there is int dir, and int area.
What is dir?
When I output the value in "sample" example, the value is 2.
Is it always 2?
What is area?
Is it the area of the marker seen by camera (in pixel?)
I got the length and width of the marker in screen coordinate to be 30
and 30, but when I output the area, the value is around 600 instead of
900 (which is 30x30)
about the "line" equation data (also part of ARMarkerInfo struct)
I noticed that it's always normalized to the "x" or "y".
Is it necessary to normalize it?
I need to know the answers to this questions to help me use the
arGetTransMat() function without using the arDetectMarkers().
(because I'm doing my own detection).