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Video encoding method and device and decoding method and device

  • US 9,788,013 B2
  • Filed: 05/09/2016
  • Issued: 10/10/2017
  • Est. Priority Date: 09/28/2010
  • Status: Active Grant
First Claim
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1. A video decoding apparatus comprising a processor configured to:

  • receive a quantized transform block which has a predetermined size,determine a scaling constant for scaling of transform coefficients included in the quantized transform block based on a quantization parameter,scale the transform coefficients by using the scaling constant, andinverse-transform the transform block that includes the scaled transform coefficients,wherein, where i denotes a remainder after the quantization parameter is divided by 6, the scaling constant for i=0 is 40, the scaling constant for i=1 is 45, the scaling constant for i=2 is 51, the scaling constant for i=3 is 57, the scaling constant for i=4 is 64, and the scaling constant for i=5 is 72.

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