首页> 外文会议>Conference on Real-Time Image Processing; 20080128-29; San Jose,CA(US) >A Resource Constrained MPEG-7 Driven Rate Control Scheme for the H264/AVC
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A Resource Constrained MPEG-7 Driven Rate Control Scheme for the H264/AVC

机译:用于H264 / AVC的资源受限的MPEG-7驱动速率控制方案

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Currently no information about different shots has been used in the H264/AVC video coding standard. This kind of information can help use choose the size of GOPs and finally reduce the bit rate and PSNR fluctuation when video sequences have multiple shots. We developed an MPEG-7 based rate control scheme in H264/AVC standard. Our proposed scheme outperforms the rate control of the H264 AVC significantly in terms of reducing the average bit rate fluctuation (variance) by 7-60% and the average PSNR fluctuation (variance) by 24-90% between shots. It is also applicable in computationally and memory restricted devices since it needs maximum 2 frames buffer space for MPEG-7 descriptor calculation, while the average amount of extra processing is only 5.8% of the total CPU cycles.
机译:当前,H264 / AVC视频编码标准中尚未使用有关不同镜头的信息。当视频序列具有多个镜头时,此类信息可以帮助选择GOP的大小,并最终减少比特率和PSNR波动。我们以H264 / AVC标准开发了基于MPEG-7的速率控制方案。我们的方案在将镜头之间的平均比特率波动(方差)降低7-60%,将平均PSNR波动(方差)降低24-90%方面,明显优于H264 AVC的速率控制。它也适用于受计算和内存限制的设备,因为它最多需要2个帧的缓冲区空间来进行MPEG-7描述符计算,而平均额外处理量仅为总CPU周期的5.8%。

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