Could I use the square grid for calibration in IMAQ vision?

[memsic]

In IMAQ vision 6.0, NI provide the circular grid for system calibration.But now for some reasons,we need to use the square grid for calibration.Could the square grid be used with the calibration functions in the IMAQ vision for system calibration? What special things do we need to consider when we use the square grid for calibration?

[BruceAmmons]

Are you talking about the layout of the points that make up the grid, or the shape of the points, or something else?

Using dots in a rectangular grid with regular X and Y spacing is the standard grid for the NI calibration routines.

I don't think the shape of the dots is critical. They could be small squares instead of circles.

If you are talking about making a grid using lines instead of dots, like a tic-tac-toe board, I think you will have problems with the NI routines. You could probably do some processing on the grid image to reduce it to dots at the intersections, but it doesn't seem like it would be worth the effort. I would just use a grid made of dots instead.

If this doesn't help, explain your problem more clearly.

Bruce