Pipelined image data compression system

Details Pipelined image data compression system Pipelined image data compression system

1991-06-24

1994-04-12

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

358430, G06K 936

Patent

active

053033728

ABSTRACT:
Pixel values f(m,n) of an image are reduced (A) by predicting each pixel value based on preceding pixel values and retaining the deviation e(m,n) between the actual and predicted values. The reduced values e(m,n) are serially fed to an input latch (20). A latched sizer (22) determines the larger of the number of bits of the value in the input latch and the largest previously received reduced value e(m,n). A comparator (42) compares a number of bits from the latched sizer with the number of bits per field indicated by a look-up table (44). Each time another reduced value e(m,n) is received, a state counter (46) indexes one state, i.e., increases the number of bit fields per output word and, when necessary causes the look-up table (44) to reduce the number of bits per field. When the comparator (42) determines that the number of bits from the latched sizer will not fit in the bit field size indicated by look-up table (44), a bit shuffler (C) is caused to form a packed word from the precedingly received reduced values. When the number of bits does fit into the bit field, the reduced value in the input latch (20) is forwarded to the bit shuffler and the process repeated with the next reduced value.

REFERENCES:
patent: 3715722 (1973-02-01), Hall
patent: 4335372 (1982-06-01), Aufderheide et al.
patent: 4369464 (1983-01-01), Temime
patent: 4734768 (1988-03-01), Pexa
patent: 5079548 (1992-01-01), Fujiyama et al.
Digital Picture Processing, Azriel Rosenfeld and Avinash C. Kak Second Edition, vol. 1, Academic Press, Inc. 1982 pp. 165-176.

Affiliated with

Also associated with

Rating

Pipelined image data compression system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pipelined image data compression system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipelined image data compression system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2106597