Red-eye filter method and apparatus

Details Red-eye filter method and apparatus Red-eye filter method and apparatus

2008-08-19

2010-06-29

Tran, Sinh (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S239000, C382S274000

Reexamination Certificate

active

07746385

ABSTRACT:
A digital image acquisition system having no photographic film, such as a digital camera, has a flash unit for providing illumination during image capture and a red-eye filter for detecting a region within a captured image indicative of a red-eye phenomenon, the detection being based upon a comparison of the captured image and a reference image of nominally the same scene taken without flash. In the embodiment the reference image is a preview image of lower pixel resolution than the captured image, the filter matching the pixel resolutions of the captured and reference images by up-sampling the preview image and/or sub-sampling the captured image. The filter also aligns at least portions of the captured image and reference image prior to comparison to allow for, e.g. movement in the subject.

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