Image encoding apparatus and method, and image decoding...

Details Image encoding apparatus and method, and image decoding... Image encoding apparatus and method, and image decoding...

2008-04-22

2008-04-22

Do, Anh Hong (Department: 2624)

Image analysis

Color image processing

Compression of color images

C382S232000, C382S233000, C382S167000

Reexamination Certificate

active

07362893

ABSTRACT:
In a color converter unit of an image encoding apparatus, a subtractor unit subtracts Y from Z and a divider unit divides the result of this subtraction (Z−Y) by 2 and supplies the result to a component signal Y1to an image coding unit. Another subtractor unit subtracts Y from X and another divider unit divides the result of this subtraction (X−Y) by 2 and supplies the result as a component signal Y2to the image coding unit. Y remains unprocessed and is supplied as a component signal Y0to the image coding unit. The image coding unit compression-codes the converted three component signals Y0, Y1, Y2according to the JPEG-2000 system to generate an encoded code stream. Thus, an image in the XYZ color space is compressed and expanded highly efficiently.

REFERENCES:
patent: 5357354 (1994-10-01), Matsunawa et al.
patent: 5608549 (1997-03-01), Usami
patent: 5742520 (1998-04-01), Uchikawa et al.
patent: 409009069 (1997-01-01), None

Affiliated with

Also associated with

Rating

Image encoding apparatus and method, and image decoding... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image encoding apparatus and method, and image decoding..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image encoding apparatus and method, and image decoding... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2754549