Vision system illumination calibration apparatus
AssigneeStorage Technology Corporation
InventorMichael E. Moy
Life of this patent
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Abstract
The vision system illumination calibration apparatus uses a pair of lamps, located one on either side of a vision element to illuminate a set of machine-readable characters imprinted in bar code format on a label affixed to a calibration target plate. The required level of illumination is set by the use of a predetermined calibration target label. The vision system is positioned opposite this calibration target label and the illumination level is varied in sequential steps. Control software identifies a range of illumination levels in which the calibration target label is accurately read by the vision element and sets the level of illumination of the lamps in this range of values.
Claims5
An object handling system for robotically storing and retrieving a plurality of objects therein, comprising:
- a plurality of object storage locations, each of which includes an opening for transferring an object into/out of said object storage location;
- robot means for transporting objects between said object storage locations, wherein said robot includes:
- means for retrieving an object stored in a selected object storage location,
- means for producing a visual image of said opening associated with said selected object storage location,
- a source of illumination associated with said image producing means to illuminate said selected object storage location, and
- means responsive to said visual image of said associated opening for positioning said retrieving means opposite said associated opening;
- calibration target means;
- and
- means, responsive to the positioning of said vision element opposite said calibration target means for calibrating said vision system.
Dependencies are inferred from the claim text.