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Adaptive pre-interpolation filter for high efficiency video coding

机译:自适应预插值滤波器,用于高效视频编码

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摘要

The proposed interpolation filter comprises two concatenating filters, adaptive pre-interpolation filter (APIF) and the normative interpolation filter in H.264/AVC. The former is applied only to the integer pixels in the reference frames; the latter generates all the sub-position samples, supported by the output of APIF. The convolution of APIF and the standard filter minimizes the motion prediction error on a frame basis. APIF preserves the merits of the adaptive interpolation filter (AIF) and the adaptive loop filter (ALF) in the key technical area (KTA) software and at the same time overcomes their drawbacks. The experimental results show that APIF outperforms either AIF or ALF. Compared with the joint use of AIF and ALF, APIF provides comparable performance, but has much lower complexity.
机译:提出的插值滤波器包括两个级联滤波器,自适应预插值滤波器(APIF)和H.264 / AVC中的规范插值滤波器。前者仅适用于参考帧中的整数像素。后者生成APIF输出支持的所有子位置样本。 APIF和标准滤波器的卷积可将帧的运动预测误差降至最低。 APIF在关键技术领域(KTA)软件中保留了自适应插值滤波器(AIF)和自适应环路滤波器(ALF)的优点,同时克服了它们的缺点。实验结果表明,APIF的性能优于AIF或ALF。与AIF和ALF的联合使用相比,APIF具有可比的性能,但复杂度低得多。

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