Camera positions?

[pbourke]

I've reconstructed a 3D model and used scale bars.
Automatic marker detection worked fine.
I've chosen the two scale bars and entered the distance between them.
Also indicated one marker as the origin and another the axis I want.
I would have thought MetaShapePro could have calculated the camera positions for me ... if so, how? If not, why?

ps: I tried to upload a screen dump, first the system told me the maximum upload was 768KB, so I jpeg compressed it some more, then I got the error the maximum upload limit is 512KB. A bug somewhere. I'm trying a much smaller file now.

[JMR]

Two points can't define a reference system, you need at least 3. your model is not referenced but just scaled (note the [S] after chunk's name.
What you can do is to add a third point with given coordinates, that you can extract making use of the already well-established scale. calculate x,y,z coordinates of this third control point by asking distances to the two existing(*). and then update. You should get [R] after chunk's name.
(*) Add empty scale bars between the new point and the two existing and change reference pane view to "estimated values" mode.
Regards, Geobit

[pbourke]

Thanks ... sloppy thinking on my part.