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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Bibliographische Detailangaben
Hauptverfasser: LEE SANG HOON, HWANG DO SIK, KIM TAE OH, JANG JIN SEONG, AHN SE WOONG, PARK CHANG HYUN, KIM CHAN YUL, EO TAE JOON, LEE SUN IL, LEE SANG YOUN, KIM JONG YOO
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.