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Digital image attribute plane compression

  • US 9,860,427 B2
  • Filed: 05/10/2016
  • Issued: 01/02/2018
  • Est. Priority Date: 01/30/2015
  • Status: Active Grant
First Claim
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1. A computer-implemented method comprising execution, by a processor of a printing device, of operations including:

  • obtaining, from a memory of the printing device, (i) a digital image containing a plurality of m×

    n pixel cells, and (ii) an attribute plane containing a plurality of m×

    n attribute cells, wherein each of the pixels in the m×

    n pixel cells is associated with at least one color value, wherein elements of the m×

    n attribute cells are associated with respective pixels in the m×

    n pixel cells, and wherein the elements identify respective control data related to their associated pixels;

    applying compression to each of the m×

    n pixel cells and the m×

    n attribute cells, wherein applying the compression comprises;

    compressing at least some of the m×

    n pixel cells in a lossy fashion, andcompressing all of the m×

    n attribute cells in a lossless fashion, wherein compression of each of the m×

    n pixel cells is based on at least part of the respectively associated m×

    n attribute cell; and

    storing, in the memory of the printing device, a compressed representation of the digital image and the attribute plane, wherein the m×

    n pixel cells and the m×

    n attribute cells are interleaved with one another in the compressed representation.

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