Image encoder, image encoding method, image encoding computer program, and storage medium
    1.
    发明申请
    Image encoder, image encoding method, image encoding computer program, and storage medium 失效
    图像编码器,图像编码方法,图像编码计算机程序和存储介质

    公开(公告)号:US20030202582A1

    公开(公告)日:2003-10-30

    申请号:US10409154

    申请日:2003-04-09

    发明人: Makoto Satoh

    IPC分类号: H04N007/12

    摘要: An image encoder of the present invention includes an encoder unit for generating first encoded data, re-encoder unit for re-encoding the first encoded data to generate second encoded data, parameter updating unit for updating of the encoder unit when the sum of data amount of the first and second encoded data reaches a target amount, and controller for starting a re-encoding process when the sum reaches the target amount. The encoder unit encodes still unencoded image data using all encoding parameters that are updated from the parameter that has been used at the beginning of the encoding of the source image data. The image encoder thus encodes image data into data having a desired data amount on a substantial real-time basis. When the encoded data is decoded, non-uniformity in image quality of the decoded image due to different numbers of encoding and decoding operations is controlled.

    摘要翻译: 本发明的图像编码器包括用于生成第一编码数据的编码器单元,用于对第一编码数据重新编码以产生第二编码数据的重新编码器单元,用于当数据量的总和时更新编码器单元的参数更新单元 的第一和第二编码数据达到目标量,以及控制器,用于当和达到目标量时开始重新编码处理。 编码器单元使用从源图像数据的编码开始时使用的参数更新的所有编码参数对仍未编码的图像数据进行编码。 因此,图像编码器将图像数据在基本实时的基础上编码成具有期望数据量的数据。 当对编码数据进行解码时,由于编码和解码操作的数量不同,因此对解码图像的图像质量的不均匀性进行控制。

    Variable-length decoding apparatus and method
    2.
    发明申请
    Variable-length decoding apparatus and method 有权
    可变长度解码装置及方法

    公开(公告)号:US20020154042A1

    公开(公告)日:2002-10-24

    申请号:US10067223

    申请日:2002-02-07

    IPC分类号: H03M007/40

    摘要: This invention implements a variable-length code pipeline decoding process as hardware by providing additional bit processing means, reducing the load on external control, and clarifying encoded data shift means. For this purpose, in order to determine a code length and additional bit length, two different decode processes are executed, the overall process is separated into three stages, i.e., a stage for shifting out a code word of encoded data, a decode processing stage, and a symbol determination & additional bit processing stage, and these stages are executed in a pipeline manner.

    摘要翻译: 本发明通过提供附加位处理装置,减少外部控制的负担,以及对编码的数据移位装置进行澄清,实现了作为硬件的可变长度码流水线解码处理。 为此,为了确定代码长度和附加位长度,执行两个不同的解码处理,整个处理分为三个阶段,即用于移出编码数据的代码字的阶段,解码处理阶段 ,以及符号确定和附加位处理级,并且这些级以流水线方式执行。

    Image coder/decoder, image coding/decoding method, and storage medium
    3.
    发明申请
    Image coder/decoder, image coding/decoding method, and storage medium 失效
    图像编码器/解码器,图像编码/解码方法和存储介质

    公开(公告)号:US20020122599A1

    公开(公告)日:2002-09-05

    申请号:US10073112

    申请日:2002-02-12

    IPC分类号: G06K009/36

    CPC分类号: G06T9/007

    摘要: In image data coding and decoding processing, in order to improve efficiency by processing a plurality of factors in one cycle as long as possible, the factors are rearranged, in coding or decoding processing, in a predetermined scan sequence such that significant factors and 0s are paired. In addition, an appropriate scan sequence is selected in accordance with the distribution state of frequencies to further improve the efficiency.

    摘要翻译: 在图像数据编码和解码处理中,为了通过在一个周期内尽可能多地处理多个因素来提高效率,因此在编码或解码处理中以预定的扫描序列重新排列这些因素,使得重要因素和0是 配对 此外,根据频率的分布状态选择适当的扫描序列,以进一步提高效率。