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

1988-02-23

Goldberg, E. A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 358135, 358138, H04N 712, H04N 718

Patent

active

047274220

ABSTRACT:
An image sequence transmission method and apparatus transmit a sequence of images over a communications channel to a receiver. The transmitter has circuitry for estimating, for successive images of the sequence, a measure of the motion displacement vector field for block regions of an image. The transmitter further has coding circuitry for representing each sequentially generated measure as a coded motion vector field, circuitry for generating an error reconstruction signal using the coded motion vector field, and coding circuitry for transmitting the coded motion vector field and the error reconstruction signal over the channel. The error signal generation circuitry has, in particular a motion reconstruction circuit for generating motion reconstruction displacement signals for each block of an image in response to the coded motion vector field, and a motion vector field interpolator for generating from the motion vector field decoded signals, displacement signals for each picture element of the image. A motion compensation circuit responds to the displacement vectors for each image for modifying a receiver estimated image thereby constructing the image which the receiver is expected to generate.

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