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    Method of removing blocking artifacts in a coding system of a moving picture
    4.
    再颁专利
    Method of removing blocking artifacts in a coding system of a moving picture 有权
    去除运动图像的编码系统中的块伪影的方法

    公开(公告)号：USRE45135E1

    公开(公告)日：2014-09-16

    申请号：US13176814

    申请日：2011-07-06

    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： H04B1/66 ,  G06K9/40

    CPC分类号： H04N19/117 ,  H04N19/134 ,  H04N19/14 ,  H04N19/182 ,  H04N19/48 ,  H04N19/80 ,  H04N19/86

    摘要： A method of coding a moving picture reduces blocking artifacts. The method includes defining pixel sets S0, S1, S2 around a block boundary, selectively determining a deblocking mode as a default mode or a DC offset mode depending on the degree of blocking artifacts. If the default mode is selected, frequency information is obtained around the block boundary per pixel using a 4-point DCT kernel, for example, a magnitude of a discontinuous component belonging to the block boundary is replaced with a minimum magnitude of discontinuous components belonging to the surroundings of the block boundary in the frequency domain and the replacing step is applied to the spatial domain. If the DC offset mode is selected and a determination is made to perform DC offset mode, the blocking artifacts in a smooth region are removed in the DC offset mode.

    摘要翻译： 编码运动图像的方法减少了块伪影。 该方法包括围绕块边界定义像素组S0，S1，S2，根据块伪影的程度选择性地确定解块模式为默认模式或DC偏移模式。 如果选择了默认模式，则使用4点DCT内核在每像素的块边界周围获得频率信息，例如，属于块边界的不连续分量的大小被最小量级的不连续分量所替代 在频域中的块边界的周围和替换步骤被应用于空间域。 如果选择了DC偏移模式并且确定执行DC偏移模式，则在DC偏移模式中去除平滑区域中的块状伪影。

    Method and apparatus for removing image blocking artifact by using transformation coefficient
    5.
    发明授权
    Method and apparatus for removing image blocking artifact by using transformation coefficient 有权
    通过使用变换系数去除图像块伪影的方法和装置

    公开(公告)号：US08644636B2

    公开(公告)日：2014-02-04

    申请号：US13343950

    申请日：2012-01-05

    申请人： Gun-shik Shin ,  Jong-beom Ra ,  Se-hyeok Park ,  Seok-bong Yoo ,  Jae-hyun Kim ,  Kyu-ha Choi

    发明人： Gun-shik Shin ,  Jong-beom Ra ,  Se-hyeok Park ,  Seok-bong Yoo ,  Jae-hyun Kim ,  Kyu-ha Choi

    IPC分类号： G06K9/40

    CPC分类号： H04N19/86 ,  H04N19/48

    摘要： A method and apparatus for removing an image blocking artifact by using a transformation coefficient are provided. The method includes: detecting a first blocking artifact which is in a flat region of the input image; removing the first blocking artifact using a number of low frequency coefficients from among transformation coefficients for each transformation block of a plurality of transformation blocks of the input image, based on a result of detecting the first blocking artifact; detecting an edge region of the input image; and removing a second blocking artifact, which is in an edge region of an intermediate image obtained from the removing of the first blocking artifact of the input image, based on the detected edge region in the input image.

    摘要翻译： 提供了一种通过使用变换系数去除图像块伪影的方法和装置。 该方法包括：检测处于输入图像的平坦区域中的第一块伪影; 基于检测到第一块伪像的结果，从输入图像的多个变换块的每个变换块的变换系数中使用多个低频系数去除第一块伪像; 检测所述输入图像的边缘区域; 以及基于所检测的输入图像中的边缘区域，去除位于从去除输入图像的第一块伪像获得的中间图像的边缘区域中的第二块伪影。

    Non-rigid registration between CT images and ultrasound images
    6.
    发明授权
    Non-rigid registration between CT images and ultrasound images 有权
    CT图像与超声图像之间的非刚性配准

    公开(公告)号：US08369597B2

    公开(公告)日：2013-02-05

    申请号：US12477081

    申请日：2009-06-02

    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： G06K9/00

    CPC分类号： A61B5/04284 ,  A61B6/032 ,  A61B6/5247 ,  A61B8/13 ,  A61B8/4416 ,  G06T7/187 ,  G06T7/33 ,  G06T2207/10081 ,  G06T2207/10132 ,  G06T2207/30004

    摘要： There are disclosed embodiments for non-rigid image registration between 3-dimensional ultrasound and CT images by using intensity and gradient information of vessels and diaphragm. An ultrasound image forming unit transmits/receives ultrasound signals to/from a target object to thereby output electrical receive signals, and forms 3-dimensional ultrasound images based on the electrical receive signals. A CT image forming unit forms 3-dimensional CT images of the target object. A registration unit determines first and second objective functions associated with diaphragm and vessel regions of the target object, respectively, based on intensity and gradient information upon portions corresponding to the diaphragm and vessel regions in each of the 3-dimensional ultrasound and CT images. The registration unit performs non-rigid image registration between the 3-dimensional ultrasound images and the 3-dimensional CT images based on the first and second objective functions.

    摘要翻译： 公开了通过使用血管和隔膜的强度和梯度信息在3维超声和CT图像之间进行非刚性图像配准的实施例。 超声波图像形成单元向目标对象发送/接收超声信号，从而输出电接收信号，并且基于电接收信号形成3维超声图像。 CT图像形成单元形成目标对象的3维CT图像。 登记单元基于与三维超声和CT图像中的每一个中的隔膜和血管区域相对应的部分上的强度和梯度信息，分别确定与目标对象的隔膜和血管区域相关联的第一和第二目标函数。 注册单元基于第一和第二目标函数在3维超声图像和3维CT图像之间执行非刚性图像配准。

    METHOD AND APPARATUS FOR REMOVING IMAGE BLOCKING ARTIFACT BY USING TRANSFORMATION COEFFICIENT
    7.
    发明申请
    METHOD AND APPARATUS FOR REMOVING IMAGE BLOCKING ARTIFACT BY USING TRANSFORMATION COEFFICIENT 有权
    使用变换系数去除图像阻塞方法的方法和装置

    公开(公告)号：US20120177301A1

    公开(公告)日：2012-07-12

    申请号：US13343950

    申请日：2012-01-05

    申请人： Gun-shik SHIN ,  Jong-beom RA ,  Se-hyeok PARK ,  Seok-bong YOO ,  Jae-hyun KIM ,  Kyu-ha CHOI

    发明人： Gun-shik SHIN ,  Jong-beom RA ,  Se-hyeok PARK ,  Seok-bong YOO ,  Jae-hyun KIM ,  Kyu-ha CHOI

    IPC分类号： G06K9/40

    CPC分类号： H04N19/86 ,  H04N19/48

    摘要： A method and apparatus for removing an image blocking artifact by using a transformation coefficient are provided. The method includes: detecting a first blocking artifact which is in a flat region of the input image; removing the first blocking artifact using a number of low frequency coefficients from among transformation coefficients for each transformation block of a plurality of transformation blocks of the input image, based on a result of detecting the first blocking artifact; detecting an edge region of the input image; and removing a second blocking artifact, which is in an edge region of an intermediate image obtained from the removing of the first blocking artifact of the input image, based on the detected edge region in the input image.

    摘要翻译： 提供了一种通过使用变换系数去除图像块伪影的方法和装置。 该方法包括：检测处于输入图像的平坦区域中的第一块伪影; 基于检测到第一块伪像的结果，从输入图像的多个变换块的每个变换块的变换系数中使用多个低频系数去除第一块伪像; 检测所述输入图像的边缘区域; 以及基于所检测的输入图像中的边缘区域，去除位于从去除输入图像的第一块伪像获得的中间图像的边缘区域中的第二块伪影。

    Registration of CT image onto ultrasound images
    8.
    发明授权
    Registration of CT image onto ultrasound images 有权
    将CT图像注册到超声图像上

    公开(公告)号：US08111892B2

    公开(公告)日：2012-02-07

    申请号：US12476153

    申请日：2009-06-01

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

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

    IPC分类号： G06K9/00

    CPC分类号： A61B6/032 ,  A61B6/5247 ,  A61B6/541 ,  A61B8/00 ,  A61B8/5238 ,  G06T7/33 ,  G06T7/38 ,  G06T2207/10081 ,  G06T2207/10132 ,  G06T2207/30004

    摘要： Embodiments for registering a CT image onto ultrasound images are disclosed. At a preoperative stage, a plurality of first ultrasound images are formed during a respiratory cycle and a CT image is obtained at the maximum inspiration. The CT image is registered onto each of the ultrasound images to thereby form ultrasound-CT registered images. The ultrasound-CT registered images may be stored in the storage unit. Subsequently, at an intraoperative stage, a plurality of second ultrasound images may be sequentially formed in real time. Similarities may be measured between the first ultrasound images and the second ultrasound images, and the ultrasound-CT registered images, each corresponding to each of the first ultrasound images having highest similarity to the second ultrasound image may be retrieved. The retrieved ultrasound image and the second ultrasound image may be displayed at the same time.

    摘要翻译： 公开了将CT图像登记到超声图像上的实施例。 在术前阶段，在呼吸周期中形成多个第一超声图像，并以最大的灵感获得CT图像。 将CT图像登记在每个超声图像上，从而形成超声CT登记图像。 超声CT登记图像可以存储在存储单元中。 随后，在术中阶段，可以实时地依次形成多个第二超声图像。 可以在第一超声波图像和第二超声波图像之间测量相似度，并且可以检索每个对应于与第二超声图像具有最高相似性的第一超声图像中的每一个的超声CT登记图像。 可以同时显示所检索的超声图像和第二超声波图像。

    Method of removing blocking artifacts in a coding system of a moving picture
    10.
    再颁专利
    Method of removing blocking artifacts in a coding system of a moving picture 失效
    去除运动图像的编码系统中的块伪影的方法

    公开(公告)号：USRE42851E1

    公开(公告)日：2011-10-18

    申请号：US11834312

    申请日：2007-08-06

    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： H04B1/66 ,  G06K9/40

    CPC分类号： H04N19/117 ,  H04N19/134 ,  H04N19/14 ,  H04N19/182 ,  H04N19/48 ,  H04N19/80 ,  H04N19/86

    摘要： A method of coding a moving picture reduces blocking artifacts. The method includes defining pixel sets S0, S1, S2 around a block boundary, selectively determining a deblocking mode as a default mode or a DC offset mode depending on the degree of blocking artifacts. If the default mode is selected, frequency information is obtained around the block boundary per pixel using a 4-point DCT kernel, for example, a magnitude of a discontinuous component belonging to the block boundary is replaced with a minimum magnitude of discontinuous components belonging to the surroundings of the block boundary in the frequency domain and the replacing step is applied to the spatial domain. If the DC offset mode is selected and a determination is made to perform DC offset mode, the blocking artifacts in a smooth region are removed in the DC offset mode.

    摘要翻译： 编码运动图像的方法减少了块伪影。 该方法包括围绕块边界定义像素组S0，S1，S2，根据块伪影的程度选择性地确定解块模式为默认模式或DC偏移模式。 如果选择了默认模式，则使用4点DCT内核在每像素的块边界周围获得频率信息，例如，属于块边界的不连续分量的大小被最小量级的不连续分量所替代 在频域中的块边界的周围和替换步骤被应用于空间域。 如果选择了DC偏移模式并且确定执行DC偏移模式，则在DC偏移模式中去除平滑区域中的块状伪影。