Device and method for reducing visual artifacts in color images

A circuit and method for reducing artifacts in decoded color video and images are disclosed. The circuit includes a buffer for receiving an input pixel in a first color-space, and a detector for determining after transformation into a second color-space, if at least one component of the transformed...

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Bibliographische Detailangaben
Hauptverfasser:	GRANT ROBERT, BUJOLD ERIC
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING APPARATUS SPECIALLY ADAPTED THEREFOR ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION CALCULATING CINEMATOGRAPHY COMPUTING COUNTING CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HANDLING RECORD CARRIERS HOLOGRAPHY MATERIALS THEREFOR ORIGINALS THEREFOR PHOTOGRAPHY PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS SEALS
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Beschreibung
Zusammenfassung:	A circuit and method for reducing artifacts in decoded color video and images are disclosed. The circuit includes a buffer for receiving an input pixel in a first color-space, and a detector for determining after transformation into a second color-space, if at least one component of the transformed pixel would fall outside a predetermined range. The determination may be made by comparing components of the input pixel, to corresponding ranges in the first color-space. Upon determining that at least one component of the transformed pixel would be outside a corresponding predetermined bound in the second color-space, the detector causes the circuit to output a pixel in the first color-space, with at least one predetermined component. The output of the circuit may subsequently be converted to the second color-space by an external color-space converter and displayed onto a color display. The method reduces visible artifacts caused by clipping during color-space conversion.