发明名称 |
METHOD AND APPARATUS FOR ENCODING/DECODING VIDEO USING HIGH-PRECISION FILTER |
摘要 |
A video decoding apparatus includes: a decoder to extract motion information on a current block to be decoded and a quantized frequency-transformed block from a bitstream; an inverse quantizer to reconstruct a frequency-transformed block based on inversely quantizing the quantized frequency-transformed block; an inverse transformer to reconstruct a residual block based on inversely transforming the frequency-transformed block; a predictor 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 referenced by the motion vector of the current block; and an adder to reconstruct the current block based on adding the reconstructed residual block and the prediction block. |
申请公布号 |
US2016316223(A1) |
申请公布日期 |
2016.10.27 |
申请号 |
US201615031366 |
申请日期 |
2016.04.22 |
申请人 |
SK TELECOM CO., LTD. |
发明人 |
Song Jinhan;Lim Jeongyeon;Lee Yunglyul;Moon Joohee;Kim Haekwang;Jeon Byeungwoo;Han Jongki;Kim Jeong Pil;Kim Daeyeon |
分类号 |
H04N19/523;H04N19/70;H04N19/124;H04N19/176;H04N19/80;H04N19/513 |
主分类号 |
H04N19/523 |
代理机构 |
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代理人 |
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主权项 |
1. A video decoding apparatus, comprising:
a decoder configured to extract motion information on a current block to be decoded and a quantized frequency-transformed block from a bitstream; an inverse quantizer configured to reconstruct a frequency-transformed block based on inversely quantizing the quantized frequency-transformed block; an inverse transformer configured to reconstruct a residual block based on inversely transforming the frequency-transformed block; a predictor 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 referenced by the motion vector of the current block; and an adder configured to reconstruct the current block based on adding the reconstructed residual block and the prediction block, wherein the predictor is configured to
calculate non-divided values of a first set of sub-samples by multiplying chroma integer-pixels by integer numerators and summing the multiplied chroma integer-pixels,derive the first set of sub-samples by dividing the non-divided values by a common denominator, andderive a second set of sub-samples by interpolation from the non-divided values of the first set of sub-samples, not from the first set of sub-samples which have been divided by the common denominator, and then division by the common denominator. |
地址 |
Seoul KR |