AVS空間可伸縮編碼中降采樣濾波器的設(shè)計(jì)
發(fā)布時(shí)間:2018-11-25 15:28
【摘要】:在AVS空間可伸縮編碼中為了進(jìn)一步提高視頻圖像的質(zhì)量,尤其針對(duì)丟失信息量較大的降采樣部分,提出了一種基于預(yù)測(cè)模式的新型降采樣方法。該方法對(duì)I幀每種不同的預(yù)測(cè)模式采用不同的濾波器,為每一種編碼模式選擇最優(yōu)效果的濾波器,從而從局部?jī)?yōu)化達(dá)到整體優(yōu)化的效果;P幀根據(jù)幀間預(yù)測(cè)模式選擇高低階數(shù)不等的濾波器,把圖像的平坦部分和細(xì)節(jié)部分分開(kāi)處理。實(shí)驗(yàn)結(jié)果表明,該方法能提高信噪比,有效的改善圖像質(zhì)量。
[Abstract]:In order to further improve the quality of video image in AVS space scalable coding, a new de-sampling method based on predictive mode is proposed, especially for the decimated part with large amount of lost information. In this method, different filters are used for each different prediction mode of I-frame, and the optimal filter is selected for each coding mode, so that the overall optimization is achieved from local optimization. According to the interframe prediction mode, P frame selects the filter with high and low order, and processes the flat part and the detail part of the image separately. Experimental results show that the proposed method can improve SNR and image quality effectively.
【作者單位】: 太原理工大學(xué)太原信息工程學(xué)院;
【分類號(hào)】:TN919.81
[Abstract]:In order to further improve the quality of video image in AVS space scalable coding, a new de-sampling method based on predictive mode is proposed, especially for the decimated part with large amount of lost information. In this method, different filters are used for each different prediction mode of I-frame, and the optimal filter is selected for each coding mode, so that the overall optimization is achieved from local optimization. According to the interframe prediction mode, P frame selects the filter with high and low order, and processes the flat part and the detail part of the image separately. Experimental results show that the proposed method can improve SNR and image quality effectively.
【作者單位】: 太原理工大學(xué)太原信息工程學(xué)院;
【分類號(hào)】:TN919.81
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