Setting region size based on markers

[slawek555]

Hi, 
i`m doing python script, that would load pictures, find automatic markers (12bit), align cameras when i put manually 4 marker coordinates (in metres).  I`m trying to create region based on those 3 real world markers, but i can`t properly do it taking from markers.
I tried taking it from markers.position, from groundControl.coord, still no luck. I have triangle of markers on ground and would like to take center and x,y size from that, and the z and height size from the last one.  Anybody did something similiar? I found a lot scripts for rotating, but no for size/center. Rotating is not the issue here, as the scene is properly roteted because of that 3-marker-triangle on ground.
Any help appreciated

[Alexey Pasumansky]

Hello slawek555,

Could you please provide some additional information regarding the region to be set. How it should be oriented relatively to the plane defined by three markers and hat values should be used to set the box size?

And also where should be the central point of the region located?