Coding method for coding moving images
    4.
    发明申请
    Coding method for coding moving images 审中-公开
    编码运动图像的编码方法

    公开(公告)号:US20070025442A1

    公开(公告)日:2007-02-01

    申请号:US11494619

    申请日:2006-07-28

    IPC分类号: H04N11/04 H04N11/02

    摘要: A region setting unit 64 sets multiple global regions in a frame image. A bit number adjustment unit 62 adjusts the number of bits of the local motion vectors LMV which are to be obtained for each global region. A local motion vector detection unit 66 detects the local motion vectors LMV with the number of bits adjusted by the bit number adjustment unit 62 in units of macro blocks for each global region. A global motion vector calculation unit 68 calculates the global motion vector GMV which represents the global motion for each global region. A local motion vector difference coding unit 72 calculates the difference ΔLMV, which is the difference between each local motion vector LMV and the global motion vector GMV, for each global region, and performs coding thereof.

    摘要翻译: 区域设置单元64在帧图像中设置多个全局区域。 位数调整单元62调整要为每个全局区域获得的局部运动矢量LMV的位数。 局部运动矢量检测单元66以每个全局区域的宏块为单位,以位数调整单元62调整的位数来检测局部运动矢量LMV。 全局运动矢量计算单元68计算表示每个全局区域的全局运动的全局运动矢量GMV。 局部运动矢量差分编码单元72针对每个全局区域计算每个局部运动矢量LMV和全局运动矢量GMV之间的差值DeltaLMV,并进行编码。

    Image processing apparatus and method for processing image having hierarchical structure
    5.
    发明授权
    Image processing apparatus and method for processing image having hierarchical structure 有权
    用于处理具有分层结构的图像的图像处理装置和方法

    公开(公告)号:US08041128B2

    公开(公告)日:2011-10-18

    申请号:US11090012

    申请日:2005-03-28

    IPC分类号: G06K9/00

    摘要: The image processing apparatus comprises a wavelet transform unit, a frame buffer, a quantization unit, a bit plane coding unit, an arithmetic coding unit, and a stream generating unit, and converts an original image into coded image data hierarchically by using these units. A copyright level management table manages copyright levels to be permitted to users who use the coded image data. A copyright level recording unit records copyright level information on the corresponding profile into a header or other areas of the coded image data in consideration of such factors as users and regions to be provided.

    摘要翻译: 该图像处理装置包括小波变换单元,帧缓冲器,量化单元,位平面编码单元,算术编码单元和流生成单元,并且通过使用这些单元分层地将原始图像转换为编码图像数据。 版权级管理表管理被允许使用编码图像数据的用户的版权级别。 考虑到诸如用户和要提供的区域的因素,版权级别记录单元将相应简档上的版权级别信息记录到编码图像数据的标题或其他区域中。

    Apparatus and Method for Controlling Image Coding Mode
    9.
    发明申请
    Apparatus and Method for Controlling Image Coding Mode 审中-公开
    用于控制图像编码模式的装置和方法

    公开(公告)号:US20070291131A1

    公开(公告)日:2007-12-20

    申请号:US10588791

    申请日:2005-01-27

    IPC分类号: H04N7/32

    摘要: As result of the diversified structure of a terminal device, the demand for data format is also diversified and there is a need to adjust a terminal to such a demand. An image coding apparatus according to the present invention uses a method complied with MPEG, as a method by which to code images, and particularly uses intra-frame coding and inter-frame coding. As an inter-frame coding method, a first mode which is a reference mode using bidirectional coding and a second mode which is a reference mode not using the bidirectional coding can be selectively set. In the case of the first mode, the bidirectional coding is not used, so that B pictures are not generated and the images are coded with I pictures and P pictures only.

    摘要翻译: 由于终端设备结构多样化,数据格式的需求也多样化,需要根据这种需求调整终端。 根据本发明的图像编码装置使用符合MPEG的方法作为对图像进行编码的方法,特别是使用帧内编码和帧间编码。 作为帧间编码方法,可以选择性地设置作为使用双向编码的参考模式的第一模式和不使用双向编码的参考模式的第二模式。 在第一模式的情况下,不使用双向编码,因此不产生B图像,并且仅使用I图像和P图像对图像进行编码。

    Coding method for coding moving images
    10.
    发明申请
    Coding method for coding moving images 审中-公开
    编码运动图像的编码方法

    公开(公告)号:US20070064809A1

    公开(公告)日:2007-03-22

    申请号:US11520859

    申请日:2006-09-14

    IPC分类号: H04N11/02 H04N11/04

    摘要: A motion vector holding unit 61 holds motion vector information with respect to a backward reference frame detected beforehand and received from a motion compensation unit 60. A motion vector calculation unit 63 calculates multiple motion vectors for each macro block defined in a coding target frame with reference to the motion vector information with respect to the backward reference frame held by the motion vector holding unit 61 according to each calculation mode of a set of different calculation modes. A motion compensation prediction unit 64 performs motion compensation using motion vectors obtained for each calculation mode, thereby creating predicted images. The predicted images are output to a coding amount estimation unit 65. The coding amount estimation unit 65 estimates the coding amount of the subtraction image, which is the subtraction between the predicted image and the original image, for each calculation mode. A motion vector selection unit 67 makes a comparison between the coding amounts of the subtraction images, and selects the motion vector which provides the smallest coding amount.

    摘要翻译: 运动矢量保持单元61保持关于事先检测并从运动补偿单元60接收的反向参考帧的运动矢量信息。 运动矢量计算单元63根据运动矢量保持单元61保持的反向参考帧的运动矢量信息,根据组的每个计算模式,计算在编码目标帧中定义的每个宏块的多个运动矢量 的不同计算模式。 运动补偿预测单元64使用针对每个计算模式获得的运动矢量来执行运动补偿,由此创建预测图像。 将预测图像输出到编码量估计单元65。 编码量估计单元65针对每个计算模式估计作为预测图像和原始图像之间的减法的减法图像的编码量。 运动矢量选择部67进行减法图像的编码量的比较,并选择提供最小编码量的运动矢量。