Quadrantal scaling of dot matrix data

Details Quadrantal scaling of dot matrix data Quadrantal scaling of dot matrix data

1994-10-18

1998-05-26

Boudreau, Leo H.

Image analysis

Image transformation or preprocessing

Changing the image coordinates

358296, 358298, 358460, 382254, 382266, 382267, 382298, 382301, G06K 940, G06K 932

Patent

active

057579822

ABSTRACT:
In its basic aspects, the present invention uses a 3.times.3 data window to examine and to convert data in a 2.times.-resolution enhancement. Data is altered from a linear 2.times.-expansion method if and when the 3.times.3 data meets four criteria that determines the frequency content of the original 3.times.3 data window subset. The criteria are deterministic of whether a random pattern--such as in a graphical artwork figure--or a logical frequency domain pattern--namely text characters, numbers, or the like--are being printed. The method is particularly useful in dot matrix, or bit mapped, printing and the like. The data smoothing method is employed only after it is determined that a logical frequency domain pattern is being analyzed.

REFERENCES:
patent: 3573789 (1971-04-01), Sharp
patent: 4342051 (1982-07-01), Suzuki et al.
patent: 4437122 (1984-03-01), Walsh et al.
patent: 5170442 (1992-12-01), Murai et al.
patent: 5329599 (1994-07-01), Curry et al.

Affiliated with

Also associated with

Rating

Quadrantal scaling of dot matrix data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Quadrantal scaling of dot matrix data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quadrantal scaling of dot matrix data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1973841