SCANNING LINE INTERPOLATION DEVICE AND SCANNING LINE INTERPOLATION METHOD

An interpolation processing section detects an angle of an edge in an image, and based on the detected angle, determines a pixel value of an interpolation target pixel in an oblique area in which there is an oblique edge by performing oblique interpolation, and determines a pixel value of an interpo...

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Bibliographische Detailangaben
1. Verfasser:	ARIMOTO, KATSUYUKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMAGE DATA PROCESSING OR GENERATION, IN GENERAL PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	An interpolation processing section detects an angle of an edge in an image, and based on the detected angle, determines a pixel value of an interpolation target pixel in an oblique area in which there is an oblique edge by performing oblique interpolation, and determines a pixel value of an interpolation target pixel in a non-oblique area which is an area excluding the oblique area by performing vertical interpolation. A nonuniform sharpening section performs sharpening processing, in a direction vertical to a scanning line, more strongly for the non-oblique area in the image for which a scanning line has been interpolated by the interpolation processing section, than for the oblique area. Thus, unnaturalness at the boundary between, of the edge whose angle gradually varies, a part for which oblique interpolation has been performed and a part for which vertical interpolation has been performed, can be reduced.