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    Method of reducing a blocking artifact when coding moving picture
    24.
    发明授权
    Method of reducing a blocking artifact when coding moving picture 有权

    公开(公告)号：US07277593B2

    公开(公告)日：2007-10-02

    申请号：US11619913

    申请日：2007-01-04

    申请人： Hyun Mun Kim ,  Jong Beom Ra ,  Sung Deuk Kim ,  Young Su Lee

    发明人： Hyun Mun Kim ,  Jong Beom Ra ,  Sung Deuk Kim ,  Young Su Lee

    IPC分类号： G06T5/10 ,  H03M1/47

    CPC分类号： H04N19/48 ,  H04N19/86

    摘要： A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.

    System and method for providing 2-dimensional computerized-tomography image corresponding to 2-dimensional ultrasound image
    27.
    发明授权
    System and method for providing 2-dimensional computerized-tomography image corresponding to 2-dimensional ultrasound image 有权
    用于提供对应于二维超声图像的二维计算机断层摄影图像的系统和方法

    公开(公告)号：US08447383B2

    公开(公告)日：2013-05-21

    申请号：US12848024

    申请日：2010-07-30

    申请人： Dong Gyu Hyun ,  Jong Beom Ra ,  Duhgoon Lee ,  Woo Hyun Nam

    发明人： Dong Gyu Hyun ,  Jong Beom Ra ,  Duhgoon Lee ,  Woo Hyun Nam

    IPC分类号： A61B5/05

    CPC分类号： A61B5/0035 ,  A61B6/032 ,  A61B8/13 ,  G06F19/00 ,  G06T7/38 ,  G06T2207/30004

    摘要： Embodiments for providing a 2-dimensional (D) computerized-tomography (CT) image corresponding to a 2-D ultrasound image through image registration between 3-D ultrasound and CT images are disclosed. An imaging system comprises a CT imaging unit, an ultrasound image forming unit, a storing unit, a processor and a display unit. The processor extracts the 2-D CT image from the 3-D ultrasound-CT registered image by performing a rigid-body transform upon the 3-D ultrasound image and calculating similarities between reference images and the 2-D ultrasound images, wherein the reference images are obtained through the rigid-body transform.

    摘要翻译： 公开了通过3-D超声和CT图像之间的图像配准来提供对应于2-D超声图像的二维（D）计算机断层摄影（CT）图像的实施例。 成像系统包括CT成像单元，超声波图像形成单元，存储单元，处理器和显示单元。 处理器通过对3-D超声图像执行刚体变换并计算参考图像和2-D超声图像之间的相似度，从3-D超声CT登记图像中提取2-D CT图像，其中参考 通过刚体变换获得图像。