KR100820132B1 - 화상 인트라-예측 모드 추정, 전달과 편성을 위한 방법 및시스템 - Google Patents
화상 인트라-예측 모드 추정, 전달과 편성을 위한 방법 및시스템 Download PDFInfo
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Abstract
Description
Claims (4)
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- 화소의 인트라-예측 모드를 추정하는 방법에 있어서,화소치를 소정의 방향을 따라 예측하는 인트라 예측 단계와,예측대상 블록에 대한 예측 모드를 추정하는 추정 단계를 갖고,상기 인트라 예측 단계는,상기 소정의 방향을 수평으로부터 약 대각선 45도 좌하 방향으로 하는 대각선 하/좌 예측모드와,상기 소정의 방향을 수평으로부터 약 대각선 45도 우하 방향으로 하는 대각선 하/우 예측모드와,상기 소정의 방향을 수평으로부터 약 대각선 67.5도 우하 방향으로 하는 수직 우 예측모드와,상기 소정의 방향을 수평으로부터 약 대각선 22.5도 우하 방향으로 하는 수평 하 예측모드를 적어도 사용하고,상기 예측모드에는, 대각선 하/좌 예측모드, 대각선 하/우 예측모드, 수직 우 예측모드, 수평 하 예측모드의 순으로 값이 커지도록 모드 번호가 부여되고,상기 추정 단계는, 상기 예측대상 블록의 상측에 인접하는 제1 블록의 예측 모드와 상기 예측대상 블록의 좌측에 인접하는 제2 블록의 예측 모드 중, 모드 번호가 적은 예측 모드를 상기 예측대상 블록의 예측 모드로 추정하는 것을 특징으로 하는 화소의 인트라-예측 모드 추정 방법.
- 화소의 인트라-예측 모드를 추정하는 방법에 있어서,예측대상 블록 내에서 소정의 방향을 따라 위치하는 화소를 동일한 예측치로예측하는 인트라 예측 단계와,상기 예측대상 블록에 대한 예측 모드를 추정하는 추정 단계를 갖고,상기 인트라 예측 단계는, 상기 예측대상 블록에 인접하는 복수의 화소의 가중 평균을 예측대상 블록의 예측치로 함과 동시에,상기 소정의 방향을 수평으로부터 약 대각선 45도 좌하 방향 또는 약 대각선 45도 우하 방향으로 하는 대각선 예측모드와,상기 소정의 방향을 수평으로부터 약 대각선 67.5도 우하 방향, 22.5도 우하 방향, 약 대각선 67.5도 좌하 방향 또는 약 대각선 67.5도 우하 방향으로 하는 중간 각 예측 모드를 적어도 사용하고,상기 예측모드에는, 중간 각 예측모드에 대각선 예측모드보다도 큰 모드 번호가 부여되고,상기 추정 단계는, 상기 예측대상 블록의 상측에 인접하는 제1 블록의 예측 모드와 상기 예측대상 블록의 좌측에 인접하는 제2 블록의 예측 모드 중, 모드 번호가 적은 예측 모드를 상기 예측대상 블록의 예측 모드로 추정하는 것을 특징으로 하는 화소의 인트라-예측 모드 추정 방법.
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US31927202P | 2002-05-28 | 2002-05-28 | |
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US31939002P | 2002-07-11 | 2002-07-11 | |
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US60/404,293 | 2003-03-31 | ||
US10/404,211 | 2003-03-31 | ||
US10/404,293 US7236524B2 (en) | 2002-05-28 | 2003-03-31 | Methods and systems for image intra-prediction mode communication |
US10/404,298 US7386048B2 (en) | 2002-05-28 | 2003-03-31 | Methods and systems for image intra-prediction mode organization |
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US10/404,211 US7289672B2 (en) | 2002-05-28 | 2003-03-31 | Methods and systems for image intra-prediction mode estimation |
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KR1020047019246A KR100685264B1 (ko) | 2002-05-28 | 2003-05-27 | 화상 인트라-예측 모드 추정, 전달과 편성을 위한 방법 및시스템 |
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