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System for transmitting and/or storing signals corresponding to textured pictures

  • US 5,533,140 A
  • Filed: 11/28/1994
  • Issued: 07/02/1996
  • Est. Priority Date: 12/18/1991
  • Status: Expired due to Fees
First Claim
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1. Apparatus for transmitting a video picture which is received at an input of said apparatus in the form of digital signals corresponding to the luminosities of pixels of said video picture, blocks of said signals constituting texture signals representative of textures in said video picture formed by the corresponding blocks of pixels;

  • said apparatus comprising;

    a sampling stage coupled to said input for deriving a reference sample of the texture signals relating to an area of the video picture having substantially homogeneous texture, said reference sample including data blocks representative of blocks of pixels in a sample of said area of the video picture;

    a first coding stage coupled to said sampling stage for encoding said reference sample of the texture signals relating to said area of the video picture so as to form a coded reference sample signal;

    a second coding stage coupled to said input for encoding the texture signals relating to said video picture so as to form coded texture signals;

    a transmission medium coupled to said first and second coding stages for transmitting the coded reference sample signal and the coded texture signals, said transmission medium comprising at least one of a communication channel and storage means;

    decoding means coupled to said transmission medium for receiving therefrom the transmitted coded reference sample signal and the coded texture signals, and decoding said signals to derive a decoded reference sample signal and decoded texture signals; and

    picture synthesizing means coupled to said decoding means for (i) combining the decoded texture signals to derive an approximative synthesis of the video picture, and (ii) extrapolating said approximative synthesis of the video picture by replacing pixels in said area of substantially homogeneous texture with pixel blocks represented by the decoded reference sample signal, thereby completing synthesis of the video picture.

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