Patent ID: 11889065
Assignee: GENSQUARE LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of decoding an image, comprising:
constructing an advanced motion vector predication (AMVP) candidate list using available motion vector candidates of a left motion vector candidate, an above motion vector candidate and a temporal motion vector candidate;
selecting a motion vector predictor among motion vector candidates of the AMVP candidates list using an AMVP index, and generating a motion vector using the motion vector predictor and a differential motion vector,
generating a prediction block using the motion vector and a reference picture index;
inversely quantizing a quantized block using a quantization parameter to generate a transformed block and inversely transforming the transformed block to generate a residual block; and
generating a reconstructed block using the prediction block and the residual block,
wherein the quantization parameter is generated per quantization unit, and a minimum size of the quantization unit is adjusted per picture,
the quantization parameter is generated using a differential quantization parameter and a quantization parameter predictor, and the quantization parameter predictor is generated using two available quantization parameters of a left quantization parameter, an above quantization parameter and a previous quantization parameter according to an order of the left quantization parameter, the above quantization parameter and the previous quantization parameter, and
wherein when the left quantization parameter is unavailable, an average of the above and previous quantization parameters is set as the quantization parameter predictor.