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Joint source and channel coding for H.264 compliant stereoscopic video transmission

机译:符合H.264的立体视频传输的联合源和通道编码

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摘要

Stereoscopic video coding research has received considerable interest over the past decade as many 3D displays have been developed. Unfortunately, the vast amount of multimedia content needed to transmit or store a stereo image pair or video sequence has hindered its use in commercial applications. As H.264 offers significantly enhanced compression and a "network-friendly" feature, we have used a H.264 compliant stereoscopic video codec [9] to compress stereo video. The data partitioning (DP) mode in NAL unit of the H.264 codec is exploited for the use of joint source and channel coding (JSCC) taking channel qualities and reliabilities into account. In this paper, we propose a framework of using unequal error protection (UEP) based JSCC scheme on the H.264 compliant stereoscopic video transmission for additive white Gaussian noise (AWGN) channel. Different levels of error protection are assigned to different partitions based on their decoding importance. Performance comparisons are made against equal error protection (EEP) schemes. Results from the simulation show that using UEP schemes, the overall quality of the decoded main and auxiliary video sequence were clearly improved in comparison with the EEP scheme at good SNR but EEP schemes outperformed UEP schemes at low SNR values. © 2005 IEEE.
机译:在过去的十年中,随着许多3D显示器的开发,立体视频编码研究引起了相当大的兴趣。不幸的是,传输或存储立体声图像对或视频序列所需的大量多媒体内容阻碍了其在商业应用中的使用。由于H.264提供了显着增强的压缩和“网络友好”功能,因此我们使用了符合H.264的立体视频编解码器[9]来压缩立体视频。 H.264编解码器的NAL单元中的数据分区(DP)模式被用于结合源质量和信道编码(JSCC)的使用,同时考虑了信道质量和可靠性。在本文中,我们提出了一个框架,该框架在基于H.264的立体视频传输中使用基于不等错误保护(UEP)的JSCC方案,以实现加性高斯白噪声(AWGN)信道。根据其解码重要性,将不同级别的错误保护分配给不同的分区。针对相等错误保护(EEP)方案进行性能比较。仿真结果表明,与UEP方案相比,使用UEP方案在信噪比良好时,解码后的主视频和辅助视频序列的整体质量明显提高,但在低SNR值下,EEP方案优于UEP方案。 ©2005 IEEE。

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