An apparatus (70) for surface contour imaging of an object has an illumination apparatus energizable to direct one or more illumination patterns (46) toward a surface position. A sensing apparatus (40) has at least one lens (34) and a sensor (30) that is energizable to obtain one or more images of the surface position corresponding to the illumination patterns (46). A calibration target (100) is detachably coupled to the apparatus (70) in the surface position, wherein the calibration target (100) has a set having a plurality of raised features (50) that are uniformly spaced apart with respect to first and second orthogonal axes that define a first plane and having a uniform height along a height axis that is orthogonal to the first plane. The raised features (50) further have at least a first slanted surface (54) that is oblique with respect to the first plane and oblique with respect to the height axis.
