Image processing method and apparatus

Details Image processing method and apparatus Image processing method and apparatus

2007-09-25

2007-09-25

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S518000, C382S237000

Reexamination Certificate

active

10368592

ABSTRACT:
Upon outputting halftone image data to an output device, density transformation is prevalently done to improve image quality. Density transformation corresponds to linear gamma correction, and cannot correct any color fog and the like of a photo image. Hence, lightness/color difference information of halftone image data is acquired on the basis of low-frequency components of frequency data obtained by transforming halftone image data into spatial frequency components, and a lightness/color difference transform amount of the halftone image data is set on the basis of the acquired lightness/color difference information.

REFERENCES:
patent: 6172770 (2001-01-01), Inoue
patent: 2003/0174351 (2003-09-01), Kawanabe et al.
patent: 10-23261 (1998-01-01), None
patent: 11-346372 (1999-12-01), None
patent: 2000-013625 (2000-01-01), None
patent: 3163753 (2001-03-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3769327