JP2013214990A - ピクチャ境界の符号化単位を符号化/復号化する方法及びその装置 - Google Patents
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Abstract
【解決手段】 映像復号化方法において、受信されたビットストリームからパージングされた符号化単位の分割如何を示す情報を利用し、階層構造の第1符号化単位を決定する段階と、階層構造の第1符号化単位が現在ピクチャの境界を外れた領域を含むか否かを決定する段階と、階層構造の第1符号化単位が、現在ピクチャの境界を外れた領域を含まないと決定される場合、階層構造の第1符号化単位をパージングして復号化する段階と、階層構造の第1符号化単位が、現在ピクチャの境界を外れた領域を含むと決定される場合、第1符号化単位のうち、現在ピクチャの境界を外れた領域を含む第1符号化単位を分割して少なくとも1つの第2符号化単位を決定する段階と、を含む。
【選択図】 図1
Description
UInt uiRPelX
UInt uiTPelY
UInt uiBPelY
if(!((uiRPelX<pcCU→getSlice()→getWidth())&&(uiBPelY<pcCU→getSlice()→getHeight())))
{
go_next_depth_process();
}
前記プログラミング・コードを参照すれば、関数「UInt
uiLPeLX」、「UInt uiRPeLX」、「UInt uiTPeLY」及び「UInt uiBPeLY」を利用し、第1符号化単位の左側X座標、右側X座標、上部Y座標及び下部Y座標を得て、「pcCU→getSlice()→getWidth()」及び「uiBPelY<pcCU→getSlice()→getHeight()」を利用し、現在ピクチャの横サイズ及び現在ピクチャの縦サイズを得る。
Frame_widthN=(Frame_width/LcuSize+1)*LcuSize
If Frame_height%LcuSize not equal to 0,
Frame_heightN=(Frame_height/LcuSize+1)*LcuSize
前記計算式で、「Frame_width%LcuSize」は、「Frame_width」を「LcuSize」で割った余りを意味し、「Frame_height%LcuSize」は、「Frame_height」を「LcuSize」で割った残りを意味する。「Frame_width/LcuSize」は、「Frame_width」を「LcuSize」で割った商(quotient)を意味し、「Frame_height/LcuSize」は、「Frame_height」を「LcuSize」で割った商を意味する。「LcuSize」は、最大符号化単位が正方形であるとき、最大符号化単位の横及び縦の大きさを意味する。
Claims (6)
- 映像復号化方法において、
受信されたビットストリームからパージングされた符号化単位の分割如何を示す情報を利用し、階層構造の第1符号化単位を決定する段階と、
前記階層構造の第1符号化単位が現在ピクチャの境界を外れた領域を含むか否かを決定する段階と、
前記階層構造の第1符号化単位が、前記現在ピクチャの境界を外れた領域を含まないと決定される場合、前記階層構造の第1符号化単位をパージングして復号化する段階と、
前記階層構造の第1符号化単位が、前記現在ピクチャの境界を外れた領域を含むと決定される場合、前記第1符号化単位のうち、前記現在ピクチャの境界を外れた領域を含む第1符号化単位を分割して少なくとも1つの第2符号化単位を決定する段階と、を含むことを特徴とする映像復号化方法。 - 前記少なくとも1つの第2符号化単位を決定する段階は、
前記第1符号化単位が、前記現在ピクチャの境界を外れる場合、前記受信されたビットストリームから前記第1符号化単位の分割如何を示す情報はパージングせず、前記第1符号化単位の分割を決定する段階を含むことを特徴とする請求項1に記載の映像復号化方法。 - 前記少なくとも1つの第2符号化単位を決定する段階は、
前記階層構造の符号化単位のうち、前記現在ピクチャの境界を外れた領域を含む第1符号化単位を分割して少なくとも1つの第2符号化単位を決定し、前記少なくとも1つの第2符号化単位のうち、前記現在ピクチャの境界を外れていない第2符号化単位に対するデータをパージングして復号化する段階を含むことを特徴とする請求項2に記載の映像復号化方法。 - 前記少なくとも1つの第2符号化単位を決定する段階は、
前記第1符号化単位から分割された少なくとも1つの第2符号化単位のうち、少なくとも1つ以上が前記ピクチャーの境界を外れる場合、前記少なくとも1つ以上のピクチャーの境界を外れた第2符号化単位を再び分割する段階をさらに含み、
前記少なくとも1つの第2符号化単位は、前記第1符号化単位を分割して生成された領域を含むことを特徴とする請求項2に記載の映像復号化方法。 - 前記階層構造の第1符号化単位が、現在ピクチャの境界を外れた領域を含むか否かを決定する段階は、
前記第1符号化単位の境界のアドレスと前記現在ピクチャの前記ピクチャーの広さ、または高さとを比較する段階を含むことを特徴とする請求項2に記載の映像復号化方法。 - 前記映像は、深度により前記最大符号化単位サイズ情報による最大符号化単位から階層的に分割され、それぞれの符号化単位は、深度別に上位深度の符号化単位から分割された正方形データ単位の1つであり、前記それぞれの符号化単位は、隣接符号化単位と独立して下位深度の符号化単位に分割され、前記階層構造の符号化単位は、符号化された符号化単位を含むことを特徴とする請求項1に記載の映像復号化方法。
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