Facsimile and static presentation processing – Facsimile – Image transmission accuracy verification
Patent
1995-11-30
1997-04-08
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Image transmission accuracy verification
358451, 382298, 382299, H04N 100, G06K 942
Patent
active
056193424
ABSTRACT:
A source image is scaled to a destination image using a method which determines a first destination pixel position corresponding to a given source image pixel. The method comprises the steps of: compiling a scale table having one entry per source pixel in a "pixel group", the end destination pixel of a pixel group positioned where a first accumulation (i.e., "Scale Source Sum") of sets of m pixels, equals a second accumulation (i.e., "Scale Destination Sum") of sets n pixels, the Scale Source Sum derived by successively adding an m pixel set value for each successively read source pixel, and the Scale Destination Sum derived by successively adding an n pixel set value for each written destination pixel; factoring both an n source pixel set value and an m destination pixel set value by y, where y is a largest common denominator of both n and m, to derive "n (factored source)" and "m (factored destination)"; using the n(factored source) to determine an integer number of pixel groups between the first source image pixel and the initial source pixel, and determining a total number of destination pixels encompassed by the integer number of pixel groups; determining a position of the given source image pixel within a pixel group on the source raster image scan line; using the scale table to determine a corresponding destination pixel within the pixel group; finding the first destination pixel and positioning the scaled version of the source image thereat.
REFERENCES:
patent: 4977398 (1990-12-01), Pleva et al.
patent: 5153651 (1992-10-01), Kurotaka
patent: 5179639 (1993-01-01), Taaffe
patent: 5245327 (1993-09-01), Pleva et al.
patent: 5265176 (1993-11-01), Miller
patent: 5307135 (1994-04-01), Amakawa et al.
patent: 5323247 (1994-06-01), Parker et al.
patent: 5457772 (1995-10-01), Shannon
patent: 5500744 (1996-03-01), Sabath
Coles Sr. Edward L.
Hewlett--Packard Company
Nguyen Madeleine Au
LandOfFree
Method for determinig a destination pixel location from an arbit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for determinig a destination pixel location from an arbit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determinig a destination pixel location from an arbit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2400844