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摘要: 现有的比较成熟的可伸缩编码框架是基于运动补偿时域滤波技术的。改进了运动补偿时域滤波中的更新操作,并引入去块滤波。更新操作过程中,要求更新块中的像素所对应的预测运动向量完全一致,否则不参与更新操作。更新操作前,对残差图像在边缘级和采样点级进行滤波控制。通过对高通信号的去块滤波,减少更新块中的伪边界成分,同时减轻块效应对后继预测操作的影响,改善编码效率。实验结果表明该方法能够改进图像的主观质量,提高低运动量的图像序列的编码性能。