Method of and apparatus for correcting gradation of image represented by image data

A standard gradation correction curve (f(X)) independent of characteristics of an original image is prepared in advance. An accumulated density historgram curve (h(X)) of the original is obtained from image data of the original. A first gradation correction curve (F(X) is obtained by modifying the s...

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Bibliographische Detailangaben

Hauptverfasser:	KURUSU, YASUO DAINIPPON SCREEN MFG. CO., LTD, NOMURA, AKIHIRO DAINIPPON SCREEN MFG. CO., LTD
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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