Systems and methods for calibration

A method for calibration, said method comprising:

• (a) obtaining one or more images of a material surface that is provided in a material fabrication or processing machine, wherein said material surface comprises one or more calibration features;
• (b) determining one or more spatial characteristics of said one or more calibration features based at least in part on said one or more images, wherein said one or more spatial characteristics comprise one or more of the following:
• (i) a distance between said one or more calibration features, (ii) a position, (iii) an orientation, (iv) an alignment, (v) a size or (vi) a shape of said one or more calibration features;
• and
• (c) using said one or more spatial characteristics to adjust at least one of (i) a position or an orientation of an imaging unit relative to said material surface or relative to said material fabrication or processing machine, (ii) an angle or an inclination of said material surface relative to said imaging unit, and (iii) one or more imaging parameters of said imaging unit, wherein said one or more imaging parameters comprise an exposure time, a shutter speed, an aperture, a film speed, a field of view, an area of focus, a focus distance, a capture rate, or a capture time associated with said imaging unit.