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Image coding method and apparatus for localized decoding at multiple resolutions

  • US 7,088,866 B2
  • Filed: 01/26/2004
  • Issued: 08/08/2006
  • Est. Priority Date: 07/03/1998
  • Status: Expired due to Fees
First Claim
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1. A method of decoding a sequential stream of data for providing substantially random access to portions of an image at a plurality of predetermined resolutions, the stream including a non-redundant multiple resolution frequency domain representation of the image, the representation comprising one low frequency subband and a plurality of high frequency subbands arranged in levels, wherein each subband is divided into a plurality of tiles and each level represents frequency contributions between adjacent resolutions of the image, and wherein each tile represents a frequency contribution to a portion of the image at a predetermined resolution, said method including:

  • retrieving at most one pointer in the sequential stream for each set of tiles which correspond to substantially a same spatial portion of the image for each level to access a portion of the digital image.

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