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Method and apparatus for coding/decoding scalable shapes by using scan interleaving

  • US 6,377,622 B1
  • Filed: 07/02/1998
  • Issued: 04/23/2002
  • Est. Priority Date: 07/02/1997
  • Status: Expired due to Term
First Claim
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1. A method for decoding scalably shapes on a plurality of layers having mutually other resolution by using a scan interleaving method, said method comprising the steps of:

  • calculating the number of cases that vertically adjacent pixel values on a base layer are different from each other, N1, and horizontally adjacent pixel values on the base layer are different from each other, N2;

    detecting whether or not the number of cases that the vertically adjacent pixel values are different from, N1, is larger than the number of cases that the horizontally adjacent pixel values are different from each other, N2; and

    deciding the scan order for executing the horizontal scanning first in a case of N1>

    N2 and performing the vertical scanning first in cases excepting N1>

    N2.

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