Image processing apparatus and image processing method

Details Image processing apparatus and image processing method Image processing apparatus and image processing method

H - Electricity

04

N

H04N 7/26 (2006.01)

Patent

CA 2584065

A basic pattern generation device (81) generates a film particle basic pattern (86) having a random noise histogram almost identical to film particle basic pattern information (53). The film particle basic pattern (86) has [64 ~ 64] pixels, from which an area of [16 ~ 16] pixels is cut out and supplied to a multiplier (84). Intensity information (88) is generated according to the film particle intensity information (54) created at the encoding side and an average value (87) of the pixel value of the area of the [16 ~ 16] pixels of decoding image information (42). According to this intensity information (88), intensity of the basic pattern (86) is adjusted. The film particle image (89) which has been subjected to intensity adjustment is added in pixel unit to the area of the [16 ~ 16] pixels of the decoding image information (42) by an adder (85).

L'invention décrit un dispositif de génération de motifs basiques (81) qui génère un motif basique de particules de pellicule (86) ayant un histogramme de bruit aléatoire quasiment identique aux informations de motifs basiques de particules de pellicule (53). Le motif basique de particule de pellicule (86) a des pixels de [64 × 64], à partir desquels une zone de pixels de [16 × 16] est découpée et fournie à un multiplicateur (84). Les informations d'intensité (88) sont générées selon les informations d'intensité de particules de pellicule (54) créées du côté codage et une valeur moyenne (87) de la valeur de pixels de la zone de pixels de [16 × 16] des informations de décodage d'image (42). Selon ces informations d'intensité (88), l'intensité des motifs basiques (86) est ajustée. L'image de particule de pellicule (89) qui a été soumise au réglage d'intensité est ajoutée dans l'unité de pixel à la zone de pixels de [16 × 16] des informations de décodaged'image (42) par un additionneur (85).

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