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Image compressing apparatus and image coding synthesizing method

  • US 5,267,333 A
  • Filed: 12/21/1992
  • Issued: 11/30/1993
  • Est. Priority Date: 02/28/1989
  • Status: Expired due to Term
First Claim
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1. An apparatus for compressing and decompressing information in an overall image to form a synthetic image from a plurality of image data, comprising:

  • means for storing a plurality of image data;

    means for selecting a total background image of the overall image and a pictorial part of the overall image from the image data stored in the storing means and identifying the pictorial part as including an object image, a component background image and an edge portion image representing a boundary portion between the object image and the component background image so as to form region information which indicates whether each pixel in the pictorial part is positioned in the object image, the component background image or the edge portion image;

    the first means for irreversibly compressing and recording color information for each pixel of the total background image, the object image and the edge portion image;

    a second means for reversibly compressing and recording the region information of each pixel of the pictorial part;

    means for decompressing the compressed color information recorded in the first means and the compressed region information recorded in the second means; and

    means for interpolating the color information of each pixel of the edge portion image by the color information of the pixels of the object image adjacent to the boundary portion and by the color information of the pixels of the total background image adjacent to the boundary portion.

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