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    High quality volume rendering with graphics processing unit
    1.
    发明申请
    High quality volume rendering with graphics processing unit 有权
    具有图形处理单元的高品质体积渲染

    公开(公告)号：US20080317321A1

    公开(公告)日：2008-12-25

    申请号：US11821996

    申请日：2007-06-25

    申请人： Hui Zhang ,  Bai Wang ,  Dongshan Fu

    发明人： Hui Zhang ,  Bai Wang ,  Dongshan Fu

    IPC分类号： G06K9/00 ,  G06F15/16

    CPC分类号： G06T15/08

    摘要： A technique for generating DRR (digitally reconstructed radiography) images includes dividing sample points along a ray trajectory through a 3-dimensional dataset of attenuation values into stages. Each of the stages includes a plurality of the sample points. The attenuation values are summed along the ray trajectory for each of the sample points. Intermediate summation values are computed for each of the stages along the ray trajectory and for each of the stages the attenuation values summed within a given stage are summed with a previous stage intermediate summation value calculated for a stage previous to the given stage to generate a given stage intermediate summation value. A final accumulation value being representative of a total attenuation summed along the ray trajectory is calculated.

    摘要翻译： 用于产生DRR（数字重建放射线照相）图像的技术包括沿着射线轨迹通过三维衰减值数据集将采样点分成阶段。 每个级包括多个采样点。 衰减值沿着每个采样点的射线轨迹相加。 对于沿着射线轨迹的每个级计算中和求和值，并且对于每个级，在给定级中求和的衰减值与针对给定级之前的级计算的先前级中间求和值相加以生成给定的 阶段中间求和值。 计算代表沿着射线轨迹求和的总衰减的最终累加值。

    High quality volume rendering with graphics processing unit
    2.
    发明授权
    High quality volume rendering with graphics processing unit 有权
    具有图形处理单元的高品质体积渲染

    公开(公告)号：US07889902B2

    公开(公告)日：2011-02-15

    申请号：US11821996

    申请日：2007-06-25

    申请人： Hui Zhang ,  Bai Wang ,  Dongshan Fu

    发明人： Hui Zhang ,  Bai Wang ,  Dongshan Fu

    IPC分类号： G06K9/00 ,  G06F15/16

    CPC分类号： G06T15/08

    摘要： A technique for generating DRR (digitally reconstructed radiography) images includes dividing sample points along a ray trajectory through a 3-dimensional dataset of attenuation values into stages. Each of the stages includes a plurality of the sample points. The attenuation values are summed along the ray trajectory for each of the sample points. Intermediate summation values are computed for each of the stages along the ray trajectory and for each of the stages the attenuation values summed within a given stage are summed with a previous stage intermediate summation value calculated for a stage previous to the given stage to generate a given stage intermediate summation value. A final accumulation value being representative of a total attenuation summed along the ray trajectory is calculated.

    摘要翻译： 用于产生DRR（数字重建放射线照相）图像的技术包括沿着射线轨迹通过三维衰减值数据集将采样点分成阶段。 每个级包括多个采样点。 衰减值沿着每个采样点的射线轨迹相加。 对于沿着射线轨迹的每个级计算中和求和值，并且对于每个级，在给定级中求和的衰减值与针对给定级之前的级计算的先前级中间求和值相加以生成给定的 阶段中间求和值。 计算代表沿着射线轨迹求和的总衰减的最终累加值。

    DRR generation and enhancement using a dedicated graphics device
    5.
    发明申请
    DRR generation and enhancement using a dedicated graphics device 审中-公开
    使用专用图形设备进行DRR生成和增强

    公开(公告)号：US20080069422A1

    公开(公告)日：2008-03-20

    申请号：US11901112

    申请日：2007-09-13

    申请人： Bai Wang ,  Dongshan Fu

    发明人： Bai Wang ,  Dongshan Fu

    IPC分类号： G06T15/00 ,  G06K9/60

    CPC分类号： G06T15/08

    摘要： DRR generation and enhancement using a dedicated graphics device are described herein. In one embodiment, an example of a process for generating DRR (digitally reconstructed radiography) images includes, but is not limited to, loading a volume rendering program into a graphics device, the volume rendering program representing a predetermined algorithm according to a non-linear attenuation model. In response to 3D scan data, the graphics device is invoked to execute the volume rendering program to perform at least a portion of volume rendering operations on at least a portion of the 3D scan data, which may include modifying the 3D scan data according to the predetermined algorithm to compensate for a difference between a first attenuation of an object with respect to a second attenuation associating a known intensity of the object. Other methods and apparatuses are also described.

    摘要翻译： 本文描述了使用专用图形设备的DRR生成和增强。 在一个实施例中，用于生成DRR（数字重建放射线照相）图像的处理的示例包括但不限于将体绘制程序加载到图形设备中，体绘制程序表示根据非线性的预定算法 衰减模型。 响应于3D扫描数据，调用图形设备以执行体绘制程序以对3D扫描数据的至少一部分执行体绘制操作的至少一部分，其可以包括根据3D扫描数据修改3D扫描数据 预定算法，用于补偿对象的第一衰减与关联对象的已知强度的第二衰减之间的差异。 还描述了其它方法和装置。

    DRR generation and enhancement using a dedicated graphics device
    6.
    发明授权
    DRR generation and enhancement using a dedicated graphics device 有权

    公开(公告)号：US07330578B2

    公开(公告)日：2008-02-12

    申请号：US11166686

    申请日：2005-06-23

    申请人： Bai Wang ,  Dongshan Fu

    发明人： Bai Wang ,  Dongshan Fu

    IPC分类号： G06K9/00 ,  G06T15/00

    CPC分类号： G06T15/08

    摘要： DRR generation and enhancement using a dedicated graphics device are described herein. In one embodiment, an example of a process for generating DRR (digitally reconstructed radiography) images includes, but is not limited to, loading a volume rendering program into a graphics device, the volume rendering program representing a predetermined algorithm according to a non-linear attenuation model. In response to 3D scan data, the graphics device is invoked to execute the volume rendering program to perform at least a portion of volume rendering operations on at least a portion of the 3D scan data, which may include modifying the 3D scan data according to the predetermined algorithm to compensate for a difference between a first attenuation of an object with respect to a second attenuation associating a known intensity of the object. Other methods and apparatuses are also described.

    Real-time hardware accelerated contour generation based on VOI mask
    8.
    发明申请
    Real-time hardware accelerated contour generation based on VOI mask 审中-公开
    基于VOI掩码的实时硬件加速轮廓生成

    公开(公告)号：US20080144903A1

    公开(公告)日：2008-06-19

    申请号：US11586772

    申请日：2006-10-25

    申请人： Bai Wang ,  Hongzu Wang ,  Dongshan Fu

    发明人： Bai Wang ,  Hongzu Wang ,  Dongshan Fu

    IPC分类号： G06K9/00

    CPC分类号： G06T15/08 ,  G06T7/12 ,  G06T2200/04 ,  G06T2207/10072 ,  G06T2207/30004

    摘要： A method and an apparatus for volume based contour generation have been presented. In some embodiments, the method includes receiving a volume dataset representing a volume of interest (VOI) in a three-dimensional (3D) space. The method may further include generating a contour of the VOI from the volume dataset representing the VOI, wherein at least a portion of the generating is performed using a graphics processing unit.

    摘要翻译： 已经提出了一种基于体积轮廓生成的方法和装置。 在一些实施例中，该方法包括在三维（3D）空间中接收表示感兴趣体积（VOI）的体数据集。 该方法还可以包括从代表VOI的体数据集中生成VOI的轮廓，其中使用图形处理单元执行生成的至少一部分。

    DRR generation and enhancement using a dedicated graphics device
    10.
    发明申请
    DRR generation and enhancement using a dedicated graphics device 有权
    使用专用图形设备进行DRR生成和增强

    公开(公告)号：US20060291710A1

    公开(公告)日：2006-12-28

    申请号：US11166686

    申请日：2005-06-23

    申请人： Bai Wang ,  Dongshan Fu

    发明人： Bai Wang ,  Dongshan Fu

    IPC分类号： G06K9/00

    CPC分类号： G06T15/08

    摘要： DRR generation and enhancement using a dedicated graphics device are described herein. In one embodiment, an example of a process for generating DRR (digitally reconstructed radiography) images includes, but is not limited to, loading a volume rendering program into a graphics device, the volume rendering program representing a predetermined algorithm according to a non-linear attenuation model. In response to 3D scan data, the graphics device is invoked to execute the volume rendering program to perform at least a portion of volume rendering operations on at least a portion of the 3D scan data, which may include modifying the 3D scan data according to the predetermined algorithm to compensate for a difference between a first attenuation of an object with respect to a second attenuation associating a known intensity of the object. Other methods and apparatuses are also described.

    摘要翻译： 本文描述了使用专用图形设备的DRR生成和增强。 在一个实施例中，用于生成DRR（数字重建放射线照相）图像的处理的示例包括但不限于将体绘制程序加载到图形设备中，体绘制程序表示根据非线性的预定算法 衰减模型。 响应于3D扫描数据，调用图形设备以执行体绘制程序以对3D扫描数据的至少一部分执行体绘制操作的至少一部分，其可以包括根据3D扫描数据修改3D扫描数据 预定算法，用于补偿对象的第一衰减与关联对象的已知强度的第二衰减之间的差异。 还描述了其它方法和装置。