Method and system for transferring a bit-mapped image using vert

Details Method and system for transferring a bit-mapped image using vert Method and system for transferring a bit-mapped image using vert

1994-03-31

1998-06-16

Boudreau, Leo

Image analysis

Image compression or coding

Shape, icon, or feature-based compression

382317, 358432, G06K 936

Patent

active

057684359

ABSTRACT:
Methods of recognizing rules, solid lines or rectangles, in a bit-mapped image and of using those rules to enable a suitable printer or other suitable device to receive the bit-mapped image quickly. In a preferred embodiment, the methods include the steps of recognizing rules, forming rule descriptors for the rules, and then transmitting the rule descriptors to the receiving device. Vertical rules are recognized by partitioning the bit-mapped image into a plurality of adjacent horizontal stripes of row data, dividing that horizontal stripe into data columns formed from vertically aligned row data bits, and ANDing the data bits in each vertically aligned column to identify, by a HIGH output from the AND function, vertical lines which span the horizontal stripe. Adjacent or continuous vertical lines are then identified. Horizontal rules are identified by dividing the row data into bytes, ANDing individual bits of each byte together, and recognizing a horizontal line by a HIGH output from the AND function. Adjacent horizontal lines are identified and combined. Horizontal rule descriptors are then formed and sent to the printer or other receiving device.

REFERENCES:
patent: 3597732 (1971-08-01), Morimoto
patent: 3613081 (1971-10-01), Morimoto
patent: 4130819 (1978-12-01), Engelmann
patent: 4375654 (1983-03-01), Evans et al.
patent: 4410916 (1983-10-01), Pratt et al.
patent: 5077809 (1991-12-01), Ghazizadeh
patent: 5113457 (1992-05-01), Enomoto et al.
patent: 5191612 (1993-03-01), Katsuyama et al.

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