Adaptive sampling along edges for surface rendering
    3.
    发明授权
    Adaptive sampling along edges for surface rendering 失效
    沿边缘进行自适应采样,进行表面渲染

    公开(公告)号:US07742631B2

    公开(公告)日:2010-06-22

    申请号:US10598635

    申请日:2005-03-03

    IPC分类号: G06K9/00

    CPC分类号: G06T15/503

    摘要: High frequency signals cannot be reconstructed properly from sampled data if the sampling frequency lies below the Nyquist rate. The invention addresses this problem by choosing few additional sample points along a trajectory intersecting the region comprising the high frequency signals, such as an edge. Intermediate rendering data is used to determine the additional sample points. Therefore, according to an exemplary embodiment of the present invention, 4 adaptively chosen sample points per pixel may provide a visual quality comparable to 16 times super-sampling, but at a much lower computational cost.

    摘要翻译: 如果采样频率低于奈奎斯特速率,则高频信号无法从采样数据中正确重建。 本发明通过沿着与包括高频信号的区域(例如边缘)相交的轨迹的几个附加采样点来解决这个问题。 中间渲染数据用于确定附加采样点。 因此,根据本发明的示例性实施例,每像素4个自适应选择的采样点可以提供与16次超采样相当的视觉质量,但是以低得多的计算成本。

    Adaptive sampling along edges for surface rendering
    4.
    发明申请
    Adaptive sampling along edges for surface rendering 失效
    沿边缘进行自适应采样,进行表面渲染

    公开(公告)号:US20070177005A1

    公开(公告)日:2007-08-02

    申请号:US10598635

    申请日:2005-03-03

    IPC分类号: H04N13/00

    CPC分类号: G06T15/503

    摘要: High frequency signals cannot be reconstructed properly from sampled data if the sampling frequency lies below the Nyquist rate. The invention addresses this problem by choosing few additional sample points along a trajectory intersecting the region comprising the high frequency signals, such as an edge. Intermediate rendering data is used to determine the additional sample points. Therefore, according to an exemplary embodiment of the present invention, 4 adaptively chosen sample points per pixel may provide a visual quality comparable to 16 times super-sampling, but at a much lower computational cost.

    摘要翻译: 如果采样频率低于奈奎斯特速率,则高频信号无法从采样数据正确重建。 本发明通过沿着与包括高频信号的区域(例如边缘)相交的轨迹的几个附加采样点来解决这个问题。 中间渲染数据用于确定附加采样点。 因此,根据本发明的示例性实施例,每像素4个自适应选择的采样点可以提供与16次超采样相当的视觉质量,但是以低得多的计算成本。

    Image visualization
    5.
    发明授权
    Image visualization 有权
    图像可视化

    公开(公告)号:US07817829B2

    公开(公告)日:2010-10-19

    申请号:US10598745

    申请日:2005-03-07

    IPC分类号: G06K9/00 G06T15/00

    CPC分类号: G06T15/08 G06T15/005

    摘要: Medical imaging modalities generate increasingly more and very large three-dimensional data sets. According to an exemplary embodiment of the present invention, a three-dimensional data set of an object of interest is interactively visualized with a varying sampling rate in an image. Advantageously, a focus area may be moved by a user interactively during rendering, wherein the sampling rate of a particular part of the image is defined by its relative position to the focus area. Advantageously, this may allow for an improvement of an overall rendering performance.

    摘要翻译: 医学成像模式产生越来越多和非常大的三维数据集。 根据本发明的示例性实施例,感兴趣对象的三维数据集在图像中以变化的采样率被交互地可视化。 有利地,焦点区域可以在渲染期间由用户交互地移动,其中图像的特定部分的采样率由其与焦点区域的相对位置来定义。 有利地,这可以允许改进整体渲染性能。

    Data set visualization
    6.
    发明授权
    Data set visualization 有权
    数据集可视化

    公开(公告)号:US07742639B2

    公开(公告)日:2010-06-22

    申请号:US10599864

    申请日:2005-04-11

    IPC分类号: G06K9/34

    摘要: In real-time three-dimensional imaging the choice of the visualization method and orientation is crucial for intervention success. The key question is what to ignore and what to show in real-time applications, where user control is not appropriate. An intervention (caused by a user) to an object of interest is visualized without the requirement of an interactive input by the user. Parameters for a visualization procedure are automatically chosen during data acquisition which may allow for an efficient tracking of the actual orientation and relative position of the structure with respect to the object of interest.

    摘要翻译: 在实时三维成像中,可视化方法和方向的选择对于干预成功至关重要。 关键的问题是什么要忽略,什么显示在实时应用程序,用户控制不合适。 可视化对感兴趣对象的干预(由用户引起的),而不需要用户的交互式输入。 在数据采集期间自动选择可视化过程的参数,这可以有效地跟踪结构相对于感兴趣对象的实际取向和相对位置。

    Image visualization
    7.
    发明申请
    Image visualization 有权
    图像可视化

    公开(公告)号:US20070183649A1

    公开(公告)日:2007-08-09

    申请号:US10598745

    申请日:2005-03-07

    IPC分类号: G06K9/00

    CPC分类号: G06T15/08 G06T15/005

    摘要: Medical imaging modalities generate increasingly more and very large three-dimensional data sets. According to an exemplary embodiment of the present invention, a three-dimensional data set of an object of interest is interactively visualized with a varying sampling rate in an image. Advantageously, a focus area may be moved by a user interactively during rendering, wherein the sampling rate of a particular part of the image is defined by its relative position to the focus area. Advantageously, this may allow for an improvement of an overall rendering performance.

    摘要翻译: 医学成像模式产生越来越多和非常大的三维数据集。 根据本发明的示例性实施例,感兴趣对象的三维数据集在图像中以变化的采样率被交互地可视化。 有利地,焦点区域可以在渲染期间由用户交互地移动,其中图像的特定部分的采样率由其与焦点区域的相对位置来定义。 有利地,这可以允许改进整体渲染性能。

    Data set visualization
    8.
    发明申请
    Data set visualization 有权
    数据集可视化

    公开(公告)号:US20070161892A1

    公开(公告)日:2007-07-12

    申请号:US10599864

    申请日:2005-04-11

    IPC分类号: A61B5/05

    摘要: In real-time three-dimensional imaging the choice of the visualization method and orientation is crucial for intervention success. The key question is what to ignore and what to show in real-time applications, where user control is not appropriate. The invention addresses this problem by visualizing an intervention (caused by a user) to an object of interest without the requirement of an interactive input by the user. Advantageously, according to an exemplary embodiment of the present invention, parameters for a visualization procedure are automatically chosen during data acquisition which may allow for an efficient tracking of the actual orientation and relative position of the structure with respect to the object of interest.

    摘要翻译: 在实时三维成像中,可视化方法和方向的选择对于干预成功至关重要。 关键的问题是什么要忽略,什么显示在实时应用程序,用户控制不合适。 本发明通过将干预(由用户引起)视觉化为感兴趣的对象而不需要用户的交互式输入来解决该问题。 有利地,根据本发明的示例性实施例,在数据获取期间自动选择用于可视化过程的参数,这可以有效地跟踪结构相对于感兴趣对象的实际取向和相对位置。

    Image registration apparatus
    10.
    发明授权
    Image registration apparatus 有权
    图像配准装置

    公开(公告)号:US08995777B2

    公开(公告)日:2015-03-31

    申请号:US13990530

    申请日:2011-11-24

    IPC分类号: G06K9/62 G06T7/00

    摘要: The invention relates to an image registration apparatus for registering a first image and a second image with respect to each other. A model, which has a fixed topology, is adapted to the first image for generating a first adapted model and to the second image for generating a second adapted model, and corresponding image elements (40, 48, 49; 50, 58, 9) are determined in the first image and in the second image based on spatial positions of first image elements in the first image with respect to the first adapted model and spatial positions of second image elements in the second image with respect to the second adapted model. Since the model has a fixed topology, corresponding image elements can relatively reliably be found based on the adapted models, even if the first and second images show objects having complex properties like a heart, thereby improving the registration quality.

    摘要翻译: 本发明涉及一种用于相对于彼此登记第一图像和第二图像的图像配准装置。 具有固定拓扑的模型适于产生第一适应模型的第一图像和用于产生第二适应模型的第二图像,以及对应的图像元素(40,48,49; 50,58,9) 基于第一图像中的第一图像元素相对于第一适应模型的空间位置和第二图像中的第二图像元素相对于第二适应模型的空间位置,在第一图像和第二图像中确定。 由于该模型具有固定的拓扑结构,所以即使第一和第二图像显示具有如心脏等复杂属性的对象,因此可以相对可靠地找到相应的图像元素,从而提高注册质量。