KR101837880B1 - 화상 처리 장치 및 화상 처리 방법 - Google Patents
화상 처리 장치 및 화상 처리 방법 Download PDFInfo
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Abstract
크기가 상이한 복수의 변환 단위로부터, 복호되는 화상 데이터의 역직교 변환을 위하여 사용되는 변환 단위를 선택하는 선택부와, 제1 크기의 변환 단위에 대응하는 제1 양자화 행렬로부터, 제2 크기의 변환 단위에 대응하는 제2 양자화 행렬을 생성하는 생성부와, 상기 선택부에 의해 상기 제2 크기의 변환 단위가 선택된 경우에, 상기 생성부에 의해 생성된 상기 제2 양자화 행렬을 사용하여 상기 화상 데이터의 변환 계수 데이터를 역양자화하는 역양자화부를 구비하는 화상 처리 장치를 제공한다.
Description
도 2는 일실시 형태에 관한 직교 변환·양자화부의 상세한 구성의 일례를 나타내는 블록도이다.
도 3은 일실시 형태에 관한 행렬 처리부의 더욱 상세한 구성의 일례를 나타내는 블록도이다.
도 4는 일실시 형태에 있어서 시퀀스 파라미터 세트 내에 삽입되는 정보의 일례를 나타내는 설명도이다.
도 5는 일실시 형태에 있어서 픽처 파라미터 세트 내에 삽입되는 정보의 일례를 나타내는 설명도이다.
도 6a는 일실시 형태에 관한 부호화시의 처리 흐름의 제1 예를 나타내는 흐름도의 전반부이다.
도 6b는 일실시 형태에 관한 부호화시의 처리 흐름의 제1 예를 나타내는 흐름도의 후반부이다.
도 7a는 일실시 형태에 관한 부호화시의 처리 흐름의 제2 예를 나타내는 흐름도의 전반부이다.
도 7b는 일실시 형태에 관한 부호화시의 처리 흐름의 제2 예를 나타내는 흐름도의 후반부이다.
도 8은 일실시 형태에 관한 화상 복호 장치의 구성의 일례를 나타내는 블록도이다.
도 9는 일실시 형태에 관한 역양자화·역직교 변환부의 상세한 구성의 일례를 나타내는 블록도이다.
도 10은 일실시 형태에 관한 행렬 생성부의 더욱 상세한 구성의 일례를 나타내는 블록도이다.
도 11a는 일실시 형태에 관한 복호시의 처리 흐름의 제1 예를 나타내는 흐름도의 전반부이다.
도 11b는 일실시 형태에 관한 복호시의 처리 흐름의 제1 예를 나타내는 흐름도의 후반부이다.
도 12a는 일실시 형태에 관한 복호시의 처리 흐름의 제2 예를 나타내는 흐름도의 전반부이다.
도 12b는 일실시 형태에 관한 복호시의 처리 흐름의 제2 예를 나타내는 흐름도의 후반부이다.
도 13a는 하나의 변형예에 관한 부호화시의 처리 흐름의 일례를 나타내는 흐름도의 전반부이다.
도 13b는 하나의 변형예에 관한 부호화시의 처리 흐름의 일례를 나타내는 흐름도의 후반부이다.
도 14a는 하나의 변형예에 관한 복호시의 처리 흐름의 일례를 나타내는 흐름도의 전반부이다.
도 14b는 하나의 변형예에 관한 복호시의 처리 흐름의 일례를 나타내는 흐름도의 후반부이다.
도 15는 텔레비전 장치의 개략적인 구성의 일례를 나타내는 블록도이다.
도 16은 휴대 전화기의 개략적인 구성의 일례를 나타내는 블록도이다.
도 17은 기록 재생 장치의 개략적인 구성의 일례를 나타내는 블록도이다.
도 18은 촬상 장치의 개략적인 구성의 일례를 나타내는 블록도이다.
도 19는 H.264/AVC에 있어서 미리 정의되어 있는 양자화 행렬의 기정값을 나타내는 설명도이다.
16 : 부호화부
110 : 선택부
120 : 직교 변환부
130 : 양자화부
60 : 화상 처리 장치(화상 복호 장치)
210 : 행렬 생성부
230 : 선택부
240 : 역양자화부
250 : 역직교 변환부
Claims (6)
- 8×8의 양자화 행렬에 있어서 서로 인접하는 제1 요소와 제2 요소 사이의 요소로서 상기 제1 요소 또는 상기 제2 요소를 복제함으로써, 16×16의 변환 단위에 대응하는 16×16의 양자화 행렬을 설정하는 설정부와,
상기 설정부에 의해 설정된 16×16의 상기 양자화 행렬을 사용하여, 양자화된 변환 계수 데이터를 역양자화하는 역양자화부를 구비하고,
상기 양자화된 변환 계수 데이터는, 부호화 단위를 분할함으로써 형성된 변환 단위별로 역양자화되는, 화상 처리 장치. - 제1항 또는 제2항에 있어서, 16×16의 상기 변환 단위로, 상기 역양자화부에 의해 역양자화된 변환 계수 데이터를 역직교 변환하여, 화상 데이터를 생성하는 역직교 변환부를 더 구비하는, 화상 처리 장치.
- 8×8의 양자화 행렬에 있어서 서로 인접하는 제1 요소와 제2 요소 사이의 요소로서 상기 제1 요소 또는 상기 제2 요소를 복제함으로써, 16×16의 변환 단위에 대응하는 16×16의 양자화 행렬을 설정하는 스텝과,
설정된 16×16의 상기 양자화 행렬을 사용하여, 양자화된 변환 계수 데이터를 역양자화하는 스텝을 포함하고,
상기 양자화된 변환 계수 데이터는, 부호화 단위를 분할함으로써 형성된 변환 단위별로 역양자화되는, 화상 처리 방법. - 제4항 또는 제5항에 있어서, 16×16의 상기 변환 단위로, 역양자화된 변환 계수 데이터를 역직교 변환하여, 화상 데이터를 생성하는 스텝을 더 포함하는, 화상 처리 방법.
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