METHOD AND APPARATUS FOR IMAGE ENCODING USING ARTIFACT REDUCTION FILTER METHOD AND APPARATUS FOR IMAGE DECODING USING ARTIFACT REDUCTION FILTER
Disclosed is a method for image encoding comprising the steps of: generating a first picture reconstructed by using a residual picture and a prediction picture; generating a second picture by applying a first artifact reduction filter on the first picture; comparing bit rate distortion values of the...
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Format: | Patent |
Sprache: | eng ; kor |
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Zusammenfassung: | Disclosed is a method for image encoding comprising the steps of: generating a first picture reconstructed by using a residual picture and a prediction picture; generating a second picture by applying a first artifact reduction filter on the first picture; comparing bit rate distortion values of the first picture and the second picture to determine a picture having a small bit rate distortion value among the first picture and the second picture; generating a third picture by applying a second artifact reduction filter on the determined picture; generating a fourth picture by applying the second artifact reduction filter on the third picture; comparing distortion values of the third picture and the fourth picture to determine a picture having a small distortion value among the third picture and the fourth picture; and generating a bit stream including information on whether the second artifact reduction filter is applied.
레지듀얼 픽처와 예측 픽처를 이용하여 복원된 제1 픽처를 생성하는 단계; 제1 픽처에 제1 아티팩트 감소 필터를 적용하여 제2 픽처를 생성하는 단계; 제1 픽처 및 상기 제2 픽처의 비트율 왜곡 값을 비교하여, 제1 픽처 및 제2 픽처 중 비트율 왜곡 값이 작은 픽처를 결정하는 단계; 결정된 픽처에 인루프 필터를 적용하여 제3 픽처를 생성하는 단계; 제3 픽처에 제2 아티팩트 감소 필터를 적용하여 제4 픽처를 생성하는 단계; 제3 픽처 및 제4 픽처의 왜곡량을 비교하여, 제3 픽처 및 제4 픽처 중 왜곡량이 작은 픽처를 결정하는 단계; 및 제2 아티팩트 감소 필터가 적용되는지에 대한 정보를 포함하는 비트스트림을 생성하는 단계를 포함하는 영상 부호화 방법이 개시된다. |
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