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    • 3. 发明申请
    • SYSTEM FOR VERY LOW RATE FACE IMAGE COMPRESSION
    • 非常低的速度图像压缩系统
    • WO2008032278A2
    • 2008-03-20
    • PCT/IB2007/053682
    • 2007-09-12
    • PIXARTIS S.A.FROSSARD, PascalVANDERGHEYNST, PierreJOST, Philippe
    • FROSSARD, PascalVANDERGHEYNST, PierreJOST, Philippe
    • G06K9/00275H04N19/12H04N19/136H04N19/172H04N19/97
    • In this system for very low rate face image compression, the compression is obtained by decomposition of a digital face image over a redundant library of functions. The image is converted into a series of geometric function indexes, along with their respective coefficient tuples which may be used to reconstruct the compressed face image for display. The system includes a face model encoder (10), a matching pursuit encoder (13) fed with residual face image signals (14) delivered from a first output of said face model encoder (10) and giving MP -parameter signals (15) to a first input of a bit-stream generator (16) which delivers the desired bit-stream (17). The face model encoder (10) has a second output giving model parameter signals (18) to a second input of said bit-stream generator (16).
    • 在用于非常低比例的面部图像压缩的该系统中,通过在冗余的功能库上分解数字面部图像来获得压缩。 图像被转换成一系列几何函数索引,以及它们各自的系数元组,其可以用于重建被压缩的面部图像以供显示。 该系统包括面部模型编码器(10),馈送有从所述面部模型编码器(10)的第一输出端递送的残余面部图像信号(14)的匹配追踪编码器(13),并且给出MP参数信号(15) 传送期望比特流(17)的比特流生成器(16)的第一输入。 所述面部模型编码器(10)具有向所述比特流发生器(16)的第二输入提供模型参数信号(18)的第二输出。