APPARATUSES AND METHODS FOR PARAMETER SELECTION DURING RATE-DISTORTION OPTIMIZATION
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United States of America Patent
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Issued Date -
Dec 24, 2015
app pub date -
Jun 19, 2014
filing date -
Jun 19, 2014
priority date (Note) -
Abandoned
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Abstract
Apparatuses and methods for parameter selection are disclosed. An example apparatus may include an encoder configured to receive a coding unit and to provide coefficients based on the coding unit. The encoder may further be configured to quantize the coefficients using a first quantization parameter to provide a first set of quantized coefficients and to quantize the coefficients using a second quantization parameter to provide a second set of quantized coefficients. The encoder may further be configured to provide a first rate-distortion pair based on the first set of quantized coefficients and to provide a second rate-distortion pair based on the second set of quantized coefficients. The encoder may further be configured to provide a rate-distortion curve based on the first and second rate-distortion pairs and to provide a Lagrangian parameter based on the rate-distortion curve. The encoder may be configured to encode the coding unit using the Lagrangian parameter.
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