Patent ID: 9706222
Date: 2017-07-11
CPC Classifications: H04N

Claim:
1. A video decoding apparatus, comprising: a decoding unit, implemented by one or more processors, configured to extract motion information on a current block to be decoded and a quantized frequency-transformed block from a bitstream; an inverse quantization unit, implemented by one or more processors, configured to reconstruct a frequency-transformed block based on inversely quantizing the quantized frequency-transformed block; an inverse transform unit, implemented by one or more processors, configured to reconstruct a residual block based on inversely transforming the frequency-transformed block; a prediction unit, implemented by one or more processors, configured to determine a motion vector of the current block based on the extracted motion information, and generate a prediction block based on interpolating chroma sub-samples of a reference block in a reference frame referenced by the motion vector of the current block; and an addition unit, implemented by one or more processors, configured to reconstruct the current block based on adding the reconstructed residual block and the prediction block, wherein the prediction unit is configured to