Digital image coding system having self-adjusting selection crit

Details Digital image coding system having self-adjusting selection crit Digital image coding system having self-adjusting selection crit

1996-07-03

2000-01-04

Au, Amelia

Image analysis

Histogram processing

For setting a threshold

G06K 900

Patent

active

060118644

ABSTRACT:
In a digital signal processing system, a method for selecting a transform function to apply to an input signal based on characteristics of the signal, and for self-adjusting criteria which are used in selecting a transform function to apply to a subsequent signal. Characteristics are obtained from the signal. The characteristics are compared to adjustable criteria which are used in selecting a transform function. Differing criteria are maintained for the different selectable transform functions. A record is maintained of transform functions selected and the particular characteristics that caused the selection. Based on the ability of a transform function to minimally define the coded signal, an inverse transform function is selected to decode the signal. The criteria used in selecting a transform function to apply to a subsequent signal are adjusted based on a quality measure of the decoded signal and the record of selected transform functions.

REFERENCES:
patent: 5339368 (1994-08-01), Higgins-Luthman et al.
patent: 5428693 (1995-06-01), Murakami et al.
patent: 5559900 (1996-09-01), Jayant et al.
patent: 5592569 (1997-01-01), Li
Performance of a real-time software-only H.261 codec on the Power Macintosh, H. Wu et al., SPIE vol. 2419 pp. 492-498.
Sam Lin et al, "Interframe Video Coding using Adaptive Sampling and Classified Vector Quantization" IEEE Communications, 1991 IEEE International Conference, 1997.

Affiliated with

Also associated with

Rating

Digital image coding system having self-adjusting selection crit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital image coding system having self-adjusting selection crit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital image coding system having self-adjusting selection crit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1078708