KR20080002952A - 움직임 벡터 부호화 장치와 그 방법, 움직임 벡터 복호화장치와 그 방법, 동화상 부호화 장치, 프로그램, 및 기억매체 - Google Patents
움직임 벡터 부호화 장치와 그 방법, 움직임 벡터 복호화장치와 그 방법, 동화상 부호화 장치, 프로그램, 및 기억매체 Download PDFInfo
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Abstract
Description
Claims (12)
- 동화상의 픽쳐를 구성하는 블록의 부호화 움직임 벡터를 복호화하는 움직임 벡터 복호화 방법에 있어서,복호화의 대상이 되는 상기 블록의 주변에서 이미 복호화가 끝난 주변 블록을 특정하는 주변 블록 특정 단계;상기 주변 블록의 움직임 벡터를 이용하여, 복호화의 대상이 되는 상기 블록의 예측 움직임 벡터를 도출하는 예측 움직임 벡터 도출 단계;상기 예측 움직임 벡터를 이용하여, 복호화의 대상이 되는 상기 블록의 움직임 벡터를 복호화하는 움직임 벡터 복호화 단계를 포함하는 것을 특징으로 하는 움직임 벡터 복호화 방법.
- 동화상의 픽쳐를 구성하는 블록의 부호화 움직임 벡터를 복호화하는 움직임 벡터 복호화 방법에 있어서,복호화의 대상이 되는 상기 블록의 주변에서 이미 복호화가 끝난 주변 블록을 특정하는 주변 블록 특정 단계;상기 주변 블록의 움직임 벡터를 이용하여, 복호화의 대상이 되는 상기 블록의 예측 움직임 벡터를 도출하는 예측 움직임 벡터 도출 단계;상기 예측 움직임 벡터를 이용하여, 복호화의 대상이 되는 상기 블록의 움직임 벡터를 복호화하는 움직임 벡터 복호화 단계를 포함하고,여기서, 상기 주변 블록이 다른 블록의 움직임 벡터를 이용하여 복호화되고 있는 경우에는, 상기 다른 블록의 움직임 벡터를 이용하여 구해진 움직임 벡터이며 상기 주변 블록을 복호화할 때에 사용되는 움직임 벡터를, 상기 예측 움직임 벡터 도출 단계에서 상기 주변 블록의 움직임 벡터로서 이용하는 것을 특징으로 하는 움직임 벡터 복호화 방법.
- 청구항 2에 있어서,상기 다른 블록은, 상기 주변 블록에 대해서 시간적으로 전방 또는 후방에 위치하는 픽쳐 내에 있는 것을 특징으로 하는 움직임 벡터 복호화 방법.
- 청구항 2에 있어서,상기 다른 블록은, 상기 주변 블록을 포함하는 픽쳐 중에 있는 것을 특징으로 하는 움직임 벡터 복호화 방법.
- 청구항 2 내지 4중 어느 한 항에 있어서,상기 움직임 벡터 복호화 방법은,상기 주변 블록이 상기 다른 블록의 움직임 벡터를 이용하여 복호화되는 경우는, 상기 주변 블록을 복호화할 때에 사용되는 움직임 벡터를 미리 기억해 두는 기억 단계를 더 포함하고,상기 주변 블록이 상기 다른 블록의 움직임 벡터를 이용하여 복호화되고 있 는 경우에는, 상기 예측 움직임 벡터 도출 단계에서, 상기 주변 블록의 움직임 벡터로서 상기 기억 단계에서 기억된 움직임 벡터를 이용해 상기 예측 움직임 벡터를 도출하는 것을 특징으로 하는 움직임 벡터 복호화 방법.
- 청구항 2 내지 4중 어느 한 항에 있어서,상기 움직임 벡터 복호화 방법은,상기 주변 블록의 복호화에 이용되는 상기 다른 블록의 움직임 벡터를 미리 기억해 두는 기억 단계를 더 포함하고,상기 주변 블록이 상기 다른 블록의 움직임 벡터를 이용해 복호화되는 경우에는, 상기 예측 움직임 벡터 도출 단계에서, 상기 기억 단계에서 기억된 상기 다른 블록의 움직임 벡터를 이용하여, 상기 주변 블록을 복호화할 때에 사용되는 움직임 벡터를 구해 상기 예측 움직임 벡터를 도출하는 것을 특징으로 하는 움직임 벡터 복호화 방법.
- 청구항 2 내지 6중 어느 한 항에 있어서,상기 주변 블록이, 상기 다른 블록의 움직임 벡터를 이용하여 복호화되고, 또한, 시간적으로 전방을 특정하는 움직임 벡터와 시간적으로 후방을 특정하는 움직임 벡터의 2개의 움직임 벡터를 이용하여 복호화되고 있는 경우에는,시간적으로 전방을 특정하는 예측 움직임 벡터와 시간적으로 후방을 특정하는 예측 움직임 벡터의 2개의 예측 움직임 벡터가, 상기 예측 움직임 벡터 도출 단 계에서 각각 도출되고, 그리고복호화의 대상이 되는 상기 블록의 2개의 움직임 벡터는, 복호화의 대상이 되는 상기 블록의 움직임 벡터의 복호화 단계에서 상기 2개의 예측 움직임 벡터를 이용해 각각 복호화되는 것을 특징으로 하는 움직임 벡터 복호화 방법.
- 청구항 2 내지 6중 어느 한 항에 있어서,상기 다른 블록이, 시간적으로 전방을 특정하는 움직임 벡터와 시간적으로 후방을 특정하는 움직임 벡터의 2개의 움직임 벡터를 가지고 있는 경우에,시간적으로 전방을 특정하는 예측 움직임 벡터와 시간적으로 후방을 특정하는 예측 움직임 벡터의 2개의 예측 움직임 벡터가, 상기 예측 움직임 벡터 도출 단계에서 각각 도출되고, 그리고복호화의 대상이 되는 상기 블록의 2개의 움직임 벡터는, 복호화의 대상이 되는 상기 블록의 움직임 벡터의 복호화 단계에서 상기 2개의 예측 움직임 벡터를 이용해 각각 복호화되는 것을 특징으로 하는 움직임 벡터 복호화 방법.
- 동화상의 픽쳐를 구성하는 블록의 부호화 움직임 벡터를 복호화하는 움직임 벡터 복호화 장치에 있어서,복호화의 대상이 되는 상기 블록의 주변에서 이미 복호화가 끝난 주변 블록을 특정하는 주변 블록 특정 수단;상기 주변 블록의 움직임 벡터를 이용하여, 복호화의 대상이 되는 상기 블록 의 예측 움직임 벡터를 도출하는 예측 움직임 벡터 도출 수단;상기 예측 움직임 벡터를 이용하여, 복호화의 대상이 되는 상기 블록의 움직임 벡터를 복호화하는 움직임 벡터 복호화 수단을 포함하고,여기서, 상기 주변 블록이 다른 블록의 움직임 벡터를 이용하여 복호화되고 있는 경우에는, 상기 다른 블록의 움직임 벡터를 이용하여 구해진 움직임 벡터이며 상기 주변 블록을 복호화할 때에 사용되는 움직임 벡터를, 상기 예측 움직임 벡터 도출 수단에서 상기 주변 블록의 움직임 벡터로서 이용하는 것을 특징으로 하는 움직임 벡터 복호화 장치.
- 동화상에 있어서의 부호화된 픽쳐를 복호화하는 동화상 복호화 장치에 있어서,청구항 9에 기재된 움직임 벡터 복호화 장치;상기 움직임 벡터 복호화 장치에 의해 복호화된 움직임 벡터에 대응하는 부호화된 픽쳐를 복호화하는 화상 복호화 수단을 구비하는 것을 특징으로 하는 동화상 복호화 장치.
- 청구항 2 내지 8중 어느 한 항에 기재된 움직임 벡터 복호화 방법에 포함되는 단계를 컴퓨터에 실행시키는 프로그램.
- 청구항 11에 기재된 프로그램을 저장하는 기록 매체.
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