Facsimile and static presentation processing – Facsimile – Reduced time or bandwidth for static image communication
Patent
1992-02-06
1994-06-07
Brinich, Stephen
Facsimile and static presentation processing
Facsimile
Reduced time or bandwidth for static image communication
358433, H04N 140
Patent
active
053194691
ABSTRACT:
In the coding of image data corresponding to a raster of pixel values, a generalized run length coding is used in respect of the difference between the pixel values in the raster line to be coded and the pixel values in the same position in the preceding raster line, such that with respect to multi-value pixels (gray values), the generalized run length coding comprises an approximation of the course of the differences as a function of the position in the raster line with a linear function and the code then contains the number of pixels and a characterization of the approximating function, and with respect to binary pixels (on/off), the length is simply a determination of the series of pixel values each equal to the pixel value in the same position in the preceding raster line, wherein in a particularly effective embodiment, this generalized run length coding with respect to the preceding line is combined with generalized run length coding of the pixel values within a line, both methods each being performed in parallel, and the method delivering the most effective code that is the longest series of pixels, compensated for by the length of the code itself, is selected for the actual encoding.
REFERENCES:
Supplement to IEEE Trans. Aerosp. & Electr. System (1966) Drapkin, P. E., pp. 392-400.
IBM Technical Bulletin (1987), pp. 1246-1247.
American Institute of Aeronautics and Astronautics, Proceedings of 1967 National Telemarketing Conference, Stumpe J. W., pp. 50-56.
Brinich Stephen
Oce'-Nederland, B.V.
LandOfFree
Method and apparatus for coding digital image 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 Method and apparatus for coding digital image data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for coding digital image data will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-797326