Background suppression in a multi-function color scanning...

Details Background suppression in a multi-function color scanning... Background suppression in a multi-function color scanning...

2008-03-27

2010-11-30

Haskins, Twyler L. (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Color correction

C358S001900, C382S274000

Reexamination Certificate

active

07843616

ABSTRACT:
What is disclosed is a novel system and method for background suppression in the image path. In one example embodiment, an image is scanned and RGB color values generated for each pixel. Each of the pixels is converted into a Lab color space to obtain luminance and chrominance values. A background luminance and a luminance variation are determined for the scanned image. For each pixel, a determination is made whether that pixel is a white pixel or a non-white pixel based. If the pixel is a white pixel, an adjustment chrominance value for that pixel is determined. The value of the chrominance adjustment is modulated as a function of a difference between the white pixel's luminance and the background luminance. The modulated chrominance adjustment is applied to the white pixel. Adjusted and non-adjusted pixels are stored in a memory. A printer controller converts the pixels to an output space.

REFERENCES:
patent: 6323957 (2001-11-01), Ball
patent: 6674899 (2004-01-01), Nagarajan et al.
patent: 7200263 (2007-04-01), Curry et al.
patent: 7324120 (2008-01-01), Curry et al.
patent: 2002/0159080 (2002-10-01), Feng et al.
patent: 2004/0052429 (2004-03-01), Curry et al.
patent: 2004/0071362 (2004-04-01), Curry et al.
patent: 2007/0019257 (2007-01-01), Li

Affiliated with

Also associated with

Rating

Background suppression in a multi-function color scanning... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Background suppression in a multi-function color scanning..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Background suppression in a multi-function color scanning... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4208983