APPARATUSES AND METHODS FOR ADJUSTING COEFFICIENTS USING DEAD ZONES
First Claim
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1. An encoder, comprising:
- a transform configured to transform a portion of a video signal into a plurality of coefficients;
a coefficient adjustment block configured to adjust coefficients of the plurality of coefficients based on a comparison with a threshold; and
a quantization block configured to receive adjusted coefficients from the coefficient adjustment block and quantize the coefficient.
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Abstract
Apparatuses and methods for adjusting coefficients for use in video encoding are described. An example apparatus may include an encoder that may be configured to receive transform coefficients and adjust selected ones of the transform coefficients (e.g. reset the selected ones to zero) based on a comparison with a threshold. The adjusted coefficients may then be quantized, which may result in effectively increasing a QP range of the encoder.
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Citations
20 Claims
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1. An encoder, comprising:
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a transform configured to transform a portion of a video signal into a plurality of coefficients; a coefficient adjustment block configured to adjust coefficients of the plurality of coefficients based on a comparison with a threshold; and a quantization block configured to receive adjusted coefficients from the coefficient adjustment block and quantize the coefficient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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receiving a video signal; transforming at least a portion of the video signal to generate a plurality of coefficients; adjusting selected ones of the plurality of coefficients based on a comparison with a threshold; quantizing the adjusted coefficients; and encoding the portion of the video signal using the adjusted coefficients. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification