Automatic focus system calibration for image capture systems

Photography – With exposure objective focusing means – focusing aid – or...

Reexamination Certificate

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Details

C396S104000, C396S123000, C396S430000, C348S348000, C353S069000

Reexamination Certificate

active

07609958

ABSTRACT:
Imaging systems and methods for calibrating imaging systems are provided. The imaging system has a body, a scene image capture system that captures images using a taking lens system that can be set to a plurality of different focus distances, and a rangefinder that is capable of determining a distance between the imaging system and at least one portion of a field of view of the taking lens system. The method comprises: automatically capturing a first calibration image of a first field of view through the taking lens system with the taking lens system set to a first focus distance setting; identifying a portion of the first calibration image having a predetermined degree of focus; using the rangefinder to determine a first calibration distance from the imaging device to the identified portion. A focus correlation is determined based upon the first calibration distance and the first focus distance setting.

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