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US 2018/0007346 A1Published application
Image calibration inspection tool and endoscope system
AssigneeOlympus Corporation
InventorTakanori USHIJIMA
Life of this patent
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Abstract
An image calibration inspection tool includes: a plurality of substantially rectangular markers, two orthogonal sides of which are connected by an arc-shaped curve; and a calibration chart in which the plurality of markers are formed on a metal plate through machining, laser marking, or the like, wherein two of the markers in a diagonal direction are separated by a predetermined distance.
Claims7
An image calibration inspection tool comprising:
- a plurality of substantially rectangular markers including a plurality of projections and recesses, wherein two orthogonal sides of the plurality of markers are connected by an arc-shaped curve;
- and
- a calibration chart provided with the plurality of markers on a predetermined surface and in which two of the markers in a diagonal direction are formed and separated by a predetermined distance.
Dependencies are inferred from the claim text.