Spatial and snr scalable video coding
    1.
    发明申请
    Spatial and snr scalable video coding 审中-公开
    空间和snr可扩展视频编码

    公开(公告)号:US20070086515A1

    公开(公告)日:2007-04-19

    申请号:US10580673

    申请日:2004-12-08

    IPC分类号: H04B1/66

    摘要: An SNR and spatial scalable video coder uses standards compatible encoding units (303, 310, 320) to produce abase layer encoded signal (130) and at least two enhanced layer encoded signals (314, 325). The base layer and at least the first enhanced layer are produced from a downscaled signal (200). At least one additional enhanced layer is produced from an upscaled signal (321). Advantageously, a single encoder/decoder pair can be used, in combination with feedback, switches, and offsets to produce all layers of the scalable coding. Modular design allows an arbitrary number of either spatial or SNR scalable encoded layers and error correction for all but the last layer. All encoders operate in the pixel domain. Decoders are also shown.

    摘要翻译: SNR和空间可分级视频编码器使用标准兼容编码单元(303,310,320)来产生比较层编码信号(130)和至少两个增强层编码信号(314,325)。 基本层和至少第一增强层由缩小的信号(200)产生。 从放大的信号(321)产生至少一个附加的增强层。 有利地,可以使用单个编码器/解码器对,与反馈,开关和偏移的组合来产生可伸缩编码的所有层。 模块化设计允许任意数量的空间或SNR可分级编码层和除最后一层以外的所有层的纠错。 所有编码器都在像素域中运行。 还显示了解码器。