Distance calculating method and imaging device

Details Distance calculating method and imaging device Distance calculating method and imaging device

2008-01-08

2008-01-08

Tran, Nhan (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S207990, C348S335000, C348S187000, C358S461000, C382S274000, C359S016000

Reexamination Certificate

active

10239137

ABSTRACT:
A distance calculation method and an imaging device that can be applied to a digital camera. The method includes calculating a distance between a point corresponding to an optical axis of a lens sub-system of the imaging device and an input point, and using the calculated distance to correct defects such as shading that occur in formed images due to peripheral light fall-off in the lens sub-system. The distance is approximated by a polygon having five or more sides, preferably having 8 or 16 sides. The distance is calculated by a disclosed function having constant coefficients, so that distances can be calculated by simple hardware.

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