Method and apparatus for efficiently communicating image sequenc

Details Method and apparatus for efficiently communicating image sequenc Method and apparatus for efficiently communicating image sequenc

1985-06-03

1987-10-27

Goldberg, E. A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 358138, 382 56, H04N 712, H04N 718, G06K 936

Patent

active

047033509

ABSTRACT:
An apparatus and method for communicating image sequences through a bandwidth limited channel have circuitry for estimating, for successive images of the sequence, a motion vector field. The motion vector field measures the motion displacement between successive images of the sequence for block regions of the image. A lossy coding circuitry represents the sequentially generated motion vector field for an image as a coded motion signal. An error reconstruction circuitry generates an error signal in response to the vector field coded motion signal and a channel encoder transmits the motion vector field coded signals and the error coded signals over the channel to a receiver. At the receiver, the transmitted error and motion coded signals are received and decoded, and a received image is derived therefrom. The lossy coding circuitry can be any of a number of different circuitries, and in particular, block transform coding can be employed. The transformed coding methods and apparatus are selected to avoid artifacts in the motion vector field and coding process such as blocking effects.

REFERENCES:
patent: 3632865 (1972-01-01), Haskell
patent: 4237484 (1980-12-01), Brown et al.
patent: 4245248 (1981-01-01), Netravali et al.
patent: 4278996 (1981-07-01), Netravali et al.
patent: 4281344 (1981-07-01), Mounts et al.
patent: 4302775 (1981-11-01), Widergreen et al.
patent: 4369463 (1983-01-01), Anastassiou et al.
patent: 4371895 (1983-02-01), Koga
patent: 4383272 (1983-05-01), Netravali et al.
patent: 4394774 (1983-07-01), Widergreen et al.
patent: 4437119 (1984-03-01), Matsumoto et al.
patent: 4447886 (1984-05-01), Meeker
patent: 4448175 (1984-12-01), Netravali
patent: 4485400 (1984-11-01), Lemelson et al.
Jain et al., "Displacement Measurement and Its Application in Interframe Image Coding," IEEE Transactions on Communications, vol. COM-29, No. 12, Dec., 1981, pp. 1799-1808.
Koga et al., "Motion-Compensated Interframe Coding for Video Conferencing," CH1679-0/81/0000-0312, 1981 IEEE, G5.3.1-G5.3.5.
Koga et al., "Motion-Compensated Adaptive Intra-Interframe Predictive Coding Algorithm," CH2118-8/85/0000-0363, 1985 IEEE, 10.7.1-10.7.4, pp. 363-366.
Ericsson, "Motion-Compensation Hybrid Coding at 50 Kb/s," CH2118-8/85/0000-0367, 1985 IEEE, 10.8.1-10.8.8, pp. 367-370.

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