AVS空间可伸缩编码中降采样滤波器的设计

发布时间：2018-11-25 15:28

【摘要】：在AVS空间可伸缩编码中为了进一步提高视频图像的质量,尤其针对丢失信息量较大的降采样部分,提出了一种基于预测模式的新型降采样方法。该方法对I帧每种不同的预测模式采用不同的滤波器,为每一种编码模式选择最优效果的滤波器,从而从局部优化达到整体优化的效果;P帧根据帧间预测模式选择高低阶数不等的滤波器,把图像的平坦部分和细节部分分开处理。实验结果表明,该方法能提高信噪比,有效的改善图像质量。
[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.
【作者单位】：太原理工大学太原信息工程学院;
【分类号】：TN919.81

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