Smooth monotonic tone reproduction curve end point adjustment

Details Smooth monotonic tone reproduction curve end point adjustment Smooth monotonic tone reproduction curve end point adjustment

2006-05-30

2006-05-30

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003010, C358S504000, C358S521000, C358S003260

Reexamination Certificate

active

07054030

ABSTRACT:
The tone reproduction curve is smoothed to eliminate or reduce artifacts due to abrupt changes in the final system tone reproduction curve. As the tone reproduction curve approaches an end point, it is modified, if necessary, so that the angle between a tangent to the tone reproduction curve at a point, and a line from that point to the end point is less than a threshold value. The end point is considered to be a corner of a box, the threshold value is a function of the distance from the point to the nearest of the walls of the corner, and the threshold value goes to zero as the distance to the wall goes to zero. Thus, the tone reproduction curve is guided to the end point in a smooth and monotonic fashion.

REFERENCES:
patent: 5196942 (1993-03-01), Shiau
patent: 5345315 (1994-09-01), Shalit
patent: 5777656 (1998-07-01), Henderson

Affiliated with

Also associated with

Rating

Smooth monotonic tone reproduction curve end point adjustment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Smooth monotonic tone reproduction curve end point adjustment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Smooth monotonic tone reproduction curve end point adjustment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3593360