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    • 3. 发明授权
    • Volume rendering of medical images
    • 医学图像的体积绘制
    • US09330485B2
    • 2016-05-03
    • US13771460
    • 2013-02-20
    • KABUSHIKI KAISHA TOSHIBAToshiba Medical Systems Corporation
    • Magnus Wahrenberg
    • G06T15/08G06T15/50
    • G06T15/08G06T15/506G06T2210/41
    • Certain embodiments provide a photo-realistic rendering apparatus and method. An illumination model is used that includes placing a synthetic or virtual light source adjacent a region of tissue of interest in order to visualize the thickness of the tissue by modeling how light from the virtual light source interacts with the tissue of interest, through effects including absorption and scattering, as light emitted from the light source travels through the tissue of interest to a view point of view plane. It is simulated how some light is absorbed making tissue regions that are thicker darker (since more of the light is absorbed and the intensity reduces) and more red (since tissue tends to absorb blue and green wavelengths more strongly than red wavelengths and this chromatic effect is incorporated in the illumination model). A 2D image can thus be provided in which the color and intensity of light propagating through the tissue provides visual feedback on the tissue thickness.
    • 某些实施例提供了一种逼真的渲染装置和方法。 使用照明模型,其包括将合成或虚拟光源放置在感兴趣组织的区域附近,以通过模拟来自虚拟光源的光如何通过包括吸收在内的影响与感兴趣的组织相互作用来模拟组织的厚度 并且由于从光源发射的光穿过感兴趣的组织到视点平面,所以散射。 模拟一些光被吸收,使得较厚的组织区域(由于更多的光被吸收并且强度降低)并且更红(因为组织倾向于比红色波长更强地吸收蓝色和绿色波长,并且这种色彩效果 被纳入照明模型)。 因此可以提供2D图像,其中通过组织传播的光的颜色和强度提供关于组织厚度的视觉反馈。
    • 4. 发明申请
    • APPARATUS FOR, AND METHOD OF, RENDERING IMAGE DATA
    • 提供图像数据的方法和方法
    • US20150022523A1
    • 2015-01-22
    • US13946346
    • 2013-07-19
    • Toshiba Medical Systems CorporationKabushiki Kaisha Toshiba
    • Andrew MURRAYMagnus Wahrenberg
    • G06T15/08
    • G06T15/08
    • Image rendering apparatus for rendering an image from a set of image data representing a volume, the apparatus comprises a rendering unit configured to perform a sampling process that comprises determining values of opacity for a plurality of sample positions along a specified path through the volume; at least one of a) determining values of colour/grayscale for the plurality of sample positions along the specified path, b) determining gradient values for a plurality of gradient positions along the specified path; and determining whether there is a transition to or from a high opacity state, and if there is a transition to or from a high opacity state modifying at least pad of the sampling process, wherein the rendering unit is further configured to process the determined values of opacity, colour/grayscale and/or gradient to determine a pixel value for a pixel of the image.
    • 用于从表示卷的一组图像数据渲染图像的图像渲染装置,所述装置包括:渲染单元,被配置为执行采样处理,所述采样处理包括:沿着通过所述卷的指定路径的多个采样位置确定不透明度的值; a)确定沿着指定路径的多个样本位置的颜色/灰度值; b)确定沿着指定路径的多个梯度位置的梯度值; 以及确定是否存在向高透明度状态转移或从高不透明状态转移,并且如果存在到至少修改至少采样过程的焊盘的高不透明状态的转变,其中所述渲染单元还被配置为处理所确定的值 不透明度,颜色/灰度和/或渐变以确定图像的像素的像素值。
    • 10. 发明授权
    • Image processing method and apparatus
    • 图像处理方法和装置
    • US09384548B1
    • 2016-07-05
    • US14603905
    • 2015-01-23
    • KABUSHIKI KAISHA TOSHIBAToshiba Medical Systems Corporation
    • Magnus Wahrenberg
    • G06K9/00G06T7/00G06T15/08
    • G06T15/08A61B6/032A61B6/037A61B6/5205A61B8/0866A61B8/483A61B8/5207
    • An image processing apparatus comprising a volume data unit for obtaining a volumetric image data set, and a rendering process unit configured to set a position of a light source, determine a plurality of sample points with respect to the volumetric image data set, for each sample point, determine at least one offset point, wherein the or each offset point is positioned at a respective offset distance from the sample point, for each offset point, determine an irradiance arising from light virtually emitted from the light source, determine or refine an irradiance at each sample point based on the irradiance at its respective at least one offset point, and render, based on the determined or refined irradiances at the sample points, an image.
    • 一种图像处理装置,包括用于获取体积图像数据集的体数据单元,以及用于设置光源的位置的绘制处理单元,针对每个样本确定关于体积图像数据集的多个采样点 确定至少一个偏移点,其中,对于每个偏移点,所述偏移点或每个偏移点位于与采样点相对应的偏移距离处,确定从光源实际发射的光产生的辐照度,确定或改善辐照度 基于在其相应的至少一个偏移点处的辐照度在每个采样点处,并且基于所述采样点处的确定的或精确的辐照度渲染图像。