Color image region management system and color image region mana

Details Color image region management system and color image region mana Color image region management system and color image region mana

1995-05-22

1996-04-16

Herndon, Heather R.

395132, G06T 1100

Patent

active

055091113

ABSTRACT:
A color image region management system suitable for retrieving a region having a specified color. Color class is determined for each picture element of image data in which the color data of each picture element is expressed by a trichromatic system. In the trichromatic system, it is determined to which color class the color of the picture element belongs of a plurality of color classes divided on the basis of a perceptual color system. There is a color index memory for constructing tree structure data reaching a root node with blocks each including at least one picture element as a leaf node, and calculating, for each node in the tree structure data and for each color class in regards to the picture elements included in the node, the frequency of picture elements having a color belonging to the color class. The calculated frequency of the picture elements is stored as a color index for each color class.

REFERENCES:
patent: 4884130 (1989-11-01), Huntsman
patent: 5049986 (1991-09-01), Aono et al.
patent: 5103407 (1992-04-01), Gabor
patent: 5222206 (1993-06-01), Liao
patent: 5228120 (1993-07-01), Farr et al.

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