Selection of coefficients for quantization processing based...

Details Selection of coefficients for quantization processing based... Selection of coefficients for quantization processing based...

Filed on

2006-07-24

Date issued

2008-07-01

Examiner

LaRose, Colin (Department: 2624)

Patent Class

Image analysis

SubClass

Color image processing

SubSubClass

Compression of color images

Other Related Categories

C382S250000, C348S220100

Type

Reexamination Certificate

Status

active

Patent number

07394928

Description

ABSTRACT:
The present invention permits to determine an image characteristic amount for efficiently searching an image without affecting a bad influence upon searching accuracy. First image characteristic amount data is extracted. Second image characteristic amount data is extracted. Then, a distance between two image characteristic amount data is calculated. Further, the calculated distance is compared with a threshold value. If the distance is smaller than the threshold value, the image characteristic amount data having smaller number of coefficients which is advantageous because of smaller data amount is selected, and, if otherwise, the image characteristic amount data having greater number of coefficients is selected.

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“MPEG-7 Visual Working Draft 4.0”, ISO/IEC JTC1/SC29/WG11/W3522, Jul. 2000.
“MPEG-7 Visual part of eXperimentation Model Version 7.0” ISO/IEC JTC1/SC29/WG11/N3521, Jul. 2000.

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