Detection and correction of red-eye features in digital images

A method of detecting red-eye features ( 1 ) in a digital image comprises identifying highlight regions ( 2 ) of the image having pixels with a substantially red hue and higher saturation and lightness values than pixels in the regions therearound. In addition, pupil regions ( 3 ) comprising two sat...

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Bibliographische Detailangaben
Hauptverfasser: Lafferty, Richard, Jarman, Nick, Archibald, Marion, Stroud, Mike, Biggs, Nigel, Normington, Daniel
Format: Patent
Sprache:eng
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Zusammenfassung:A method of detecting red-eye features ( 1 ) in a digital image comprises identifying highlight regions ( 2 ) of the image having pixels with a substantially red hue and higher saturation and lightness values than pixels in the regions therearound. In addition, pupil regions ( 3 ) comprising two saturation peaks either side of a saturation trough may be identified. It is then determined whether each highlight or pupil region corresponds to part of a red-eye feature on the basis of further selection criteria, which may include determining whether there is an isolated, substantially circular area ( 43 ) of correctable pixels around a reference pixel. Correction of red-eye features involves reducing the lightness and/or saturation of some or all of the pixels in the red-eye feature.