Image processing apparatus, image processing method, image...

Details Image processing apparatus, image processing method, image... Image processing apparatus, image processing method, image...

2005-09-06

2009-08-04

Couso, Jose L (Department: 2624)

Image analysis

Image compression or coding

Reexamination Certificate

active

07570820

ABSTRACT:
An image processing apparatus comprises a pixel group reference point determination unit64that divides the input image data into predetermined pixel groups and determines a position of a reference point from the grayscale values of respective pixels contained in the pixel groups; a pixel group expansion processing unit65that takes grayscale values of the part that is less than a threshold value from unprocessed pixels in the periphery of the pixel group to the pixel group if the sum total of the grayscale values of the respective pixels contained in the pixel group is less than the threshold value; and a quantization data supply unit66that supplies the quantization data to a pixel on the basis of the position of the reference point determined by the pixel group reference point determination unit64.

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patent: 6075902 (2000-06-01), Kojima
patent: 11-027528 (1999-01-01), None
Toshiya Kurosawa et al., “Peripheral Brightness Accumulation Redistribution” (CAPIX method) pseudo intermediate grayscale processor, Institute of Image Electronics Engineers of Japan, 17thVolume, Fifth Issue (1988) pp. 361-368.

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