Abstract
Reporters obtained the following quote from the background information supplied by the inventors:“Patent Literature 1 discloses, regarding a ranging apparatus including a plurality of imaging systems, acalibration method for estimating a camera parameter representing characteristics of each of the pluralityof imagin g systems. In the calibration method disclosed in Patent Literature 1, the camer a parameteris estimated using information acquired by capturing an image of a r eference chart positioned to be in apredetermined positional relationship with the ranging apparatus.
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