1. A method of evaluating an object disposed on an upper surface of an object holder, the method comprising: acquiring at least one first frame representing a captured portion of the object, while the object holder is positioned at each of a plurality of locations; acquiring at least one second frame representing a captured portion of at least one other surface of the object holder while the object holder is positioned at each of the plurality of locations; and determining at least one spatial characteristic associated with the captured portion of the object, based on at least one of the acquired frames, wherein the determining includes: determining values of a plurality of optical markers captured in each second frame, at least two of the optical markers having different characteristics, and determining at least one of coordinates associated with the values and an orientation of the captured portion of the at least one other surface.