METHOD OF DETERMINING MOVEMENT OF OPTICAL AXIS, AND APPARATUS OF DETERMINING MOVEMENT OF OPTICAL AXIS

摘要

PROBLEM TO BE SOLVED: To determine and correct the movement of the optical axis of each lens at zoom in stereoscopic imaging using a camera having a lens.

SOLUTION: A method of determining the movement in position of the optical axis of a camera having an optical zoom lens comprises the steps of: obtaining a test image at a predetermined level of optical zoom; applying a digital zoom to at least part of the test image; selecting a plurality of test points in the digitally zoomed test image; changing the level of optical zoom by a predetermined amount and changing the level of digital zoom; obtaining the test image at the different level of zoom; analyzing the digitally zoomed test image; searching at least part of the digitally zoomed test image at the different level of zoom for two of the plurality of test points; converting the position of the test points into corresponding positions within the optically zoomed test images; and determining the amount of movement of the optical axis on the basis of the difference in position between corresponding test points within the test images.

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