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Method for efficient rate control

  • US 6,356,668 B1
  • Filed: 12/29/1998
  • Issued: 03/12/2002
  • Est. Priority Date: 12/29/1998
  • Status: Expired due to Term
First Claim
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1. An efficient method for determining the compressed rate of a digital image with a given set of compression parameters that affect the amount of quantization, comprising the steps of:

  • a) forming a plurality of sparsely-sampled non-overlapping image regions, each of which includes a plurality of contiguous pixels, from the digital image where the total number of pixels contained in all of the regions is less than the total pixels in the digital image;

    b) compressing each region with the given set of compression parameters, thereby generating a resulting rate for each region; and

    , c) combining the resulting rate from each region to form an estimate of the compressed rate of the digital image.

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