Method and apparatus for adaptively compressing a video signal i

Details Method and apparatus for adaptively compressing a video signal i Method and apparatus for adaptively compressing a video signal i

1988-08-18

1990-03-20

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358133, H04N 712

Patent

active

049105949

ABSTRACT:
On a transmitting side, a digital video signal comprising respective pixel samples (each of which may include eight bits) is received, and a set of elementary pixel samples determined from the received pixel samples at a predetermined rate are transmitted. The values of respective subject pixel samples other than the elementary ones are predicted, and respective predictive errors of the predicted values are detected from present values of the received pixel samples. First flags are then generated individually for each subject pixel sample whose predictive error is greater than a threshold value, and second flags are generated individually for each subject pixel sample whose predictive error is less than or equal to the threshold value. The present values of the subject pixel samples having the first flags are transmitted, and compressed data (including the second flags) is transmitted for the subject pixel samples having the second flags. On a receiving side, values of the subject pixel samples represented by the compressed data with the second flags are predicted, and the subject pixels are interpolated with pixel samples having a present value equal to the predicted value. A decoded video signal, including the transmitted elementary pixel samples, the respective subject pixel samples having the first flags, and the respective interpolated subject pixel samples, is then outputted.

REFERENCES:
patent: 4144543 (1979-03-01), Kaga
patent: 4782387 (1988-11-01), Sabri et al.

Affiliated with

Also associated with

Rating

Method and apparatus for adaptively compressing a video signal i 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 adaptively compressing a video signal i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for adaptively compressing a video signal i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-796320