Compaction and decompaction of non-coded information bearing sig

Details Compaction and decompaction of non-coded information bearing sig Compaction and decompaction of non-coded information bearing sig

1983-01-10

1985-11-26

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

340703, 340728, 358260, 358263, 358283, 364900, G06K 900, H04N 712

Patent

active

045558027

ABSTRACT:
Image or character data in the form of a rectangular array of binary 1s and 0s (bits) are divided into a plurality of segments, such as thirty-two by thirty-two bit segments or one bit by eight bit or byte segments. The image data is scanned for identifying all-zero segments (background) which are ignored and non-zero segments (foreground) which are transmitted or stored with offset and length (number of successive non-zero segments). The compacted image data is suitably indexed for facilitating image expansion using simple techniques. All compaction and decompaction machine operations are independent of bit-significant informational content of the segments. Presentation of the uncompacted data uses any printer or display type of device.

REFERENCES:
patent: 3681650 (1972-08-01), Hell
patent: 3921135 (1975-11-01), Komaru et al.
patent: 4000486 (1976-12-01), Schomburg
patent: 4031519 (1977-06-01), Findley
patent: 4071855 (1978-01-01), Wilmer
patent: 4084259 (1978-04-01), Cahill et al.
patent: 4205341 (1980-05-01), Mitsuya et al.
patent: 4210936 (1980-07-01), Cinque et al.
patent: 4233601 (1980-11-01), Hankins et al.
patent: 4238768 (1980-12-01), Mitsuya et al.
patent: 4364024 (1982-12-01), Paetsch
patent: 4365273 (1982-12-01), Yamada et al.
patent: 4366505 (1982-12-01), Tsuda et al.
patent: 4467363 (1984-08-01), Tench, Jr.
J. F. Fedak et al., "Advanced Function Printing with Efficient Storage Utilization", IBM TDB vol. 25, No. 3B, Aug. 1982, pp. 1650-1651.
J. A. Hall, "Laser Printing Systems Architecture", HP Systems Journal, Jun. 1982, pp. 8-9.
Anastassiou et al., "High Performance Gray-Scale Compression", IBM Technical Disclosure Bulletin, vol. 24, No. 9, Feb. 1982, pp. 4513-4516.
Stucki, "Optimal Digital Halftone Pattern Generation Method", IBM Technical Disclosure Bulletin, vol. 17, No. 9, Feb. 1975, pp. 2779-2780.

Affiliated with

Also associated with

Rating

Compaction and decompaction of non-coded information bearing sig does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compaction and decompaction of non-coded information bearing sig, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compaction and decompaction of non-coded information bearing sig will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-272611