Colour correction of images

A raw image consists of a plurality of pixels in a plurality of colour planes giving a colour image. The raw image is split into at least a low frequency image and a high frequency image. The low frequency image is colour corrected to produce a colour corrected low frequency image. The high frequenc...

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Bibliographische Detailangaben
Hauptverfasser:	POLLARD, STEPHEN B, HUNTER, ANDREW
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CALCULATING COMPUTING CORRECTION OF TYPOGRAPHICAL ERRORS COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME IMAGE DATA PROCESSING OR GENERATION, IN GENERAL LINING MACHINES PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A raw image consists of a plurality of pixels in a plurality of colour planes giving a colour image. The raw image is split into at least a low frequency image and a high frequency image. The low frequency image is colour corrected to produce a colour corrected low frequency image. The high frequency image is colour corrected in the region of chromatic edges. The colour corrected low frequency image is combined with the high frequency image to give a final image which is of comparable resolution to the raw image but is colour corrected.