HVQ compression of data and printing hints
    3.
    发明授权
    HVQ compression of data and printing hints 失效
    HVQ压缩数据和打印提示

    公开(公告)号:US6078696A

    公开(公告)日:2000-06-20

    申请号:US106734

    申请日:1998-06-29

    CPC分类号: G06T9/008

    摘要: Printing hints can be efficiently compressed in a system using hierarchical compression (HVQ) by first using HVQ to generate compressed codewords, and then adding the printing hint to the codewords to generate an intermediate form of codeword, before sending this intermediate form to a pattern matching lossless compressor for final compression. Even though the same printing hint may be applied to a number of codewords, the overall compression will be affected very little by the addition of the printing hints since the hints are identical over a large number of codewords in series.

    摘要翻译: 打印提示可以在使用分层压缩(HVQ)的系统中被有效地压缩,首先使用HVQ生成压缩码字,然后将打印提示添加到码字以产生中间形式的码字,然后将该中间形式发送到模式匹配 无损压缩机用于最终压缩。 即使可以将相同的打印提示应用于多个代码字,但是通过添加打印提示,总体压缩将受到很小的影响,因为提示在大量的串行码字中是相同的。

    HVQ compression combined with orthogonal rotation
    4.
    发明授权
    HVQ compression combined with orthogonal rotation 失效
    HVQ压缩结合正交旋转

    公开(公告)号:US06470052B1

    公开(公告)日:2002-10-22

    申请号:US09106580

    申请日:1998-06-29

    IPC分类号: H04N712

    CPC分类号: G06T9/008 H04N19/94

    摘要: Using hierarchical vector quantization (HVQ) to accomplish rotation in addition to compression and decompression. During the compression step the image is divided into segments and each segment is reduced to a codeword. These codewords are transposed so that the segments will be in rotated order when printed. Then the codewords are decompressed to form segments in which the pixels are in rotated order.

    摘要翻译: 使用分层矢量量化(HVQ)除了压缩和解压缩之外还能完成旋转。 在压缩步骤期间,图像被分割成段,并且每个段被缩减为码字。 这些码字被转置,使得在打印时这些段将处于旋转顺序。 然后将码字解压缩以形成其中像素处于旋转顺序的段。