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1. 发明申请

US20130251286A1 ITERATIVE RECONSTRUCTION ALGORITHM WITH A CONSTANT VARIANCE BASED WEIGHTING FACTOR 有权
标题翻译：基于恒定变量因子的迭代重构算法
公开(公告)号：US20130251286A1
公开(公告)日：2013-09-26
申请号：US13990450
申请日：2011-11-25
申请人： Bernhard Johannes Brendel , Thomas Koehler , Holger Schmitt , Rolf Dieter Bippus , Roland Proksa
发明人： Bernhard Johannes Brendel , Thomas Koehler , Holger Schmitt , Rolf Dieter Bippus , Roland Proksa
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/424
摘要： A method includes reconstructing measured projection data using an iterative statistical reconstruction algorithm that reduces image artifact caused by differences in variances in projections of the measured projection data used to update a voxel of the image for one or more voxels of the image. A reconstructor includes a processor that reconstructs measured projection data using an iterative statistical reconstruction algorithm that reduces or mitigates image artifact caused by differences in variances in projections used to update a voxel of the image for one or more voxels of the image. A computer readable storage medium encoded with computer executable instructions, which, when executed by a processor of a computer, cause the processor to: reduce image artifact caused by differences in variances in projections used to update a voxel of an image for one or more voxels of the image using an iterative statistical reconstruction algorithm.
摘要翻译：一种方法包括使用迭代统计重建算法来重建测量的投影数据，所述迭代统计重构算法减少由用于更新图像的一个或多个体素的图像的体素的测量投影数据的投影方差的差异引起的图像伪像。重构器包括使用迭代统计重建算法来重建测量的投影数据的处理器，其减少或减轻由用于更新图像的一个或多个体素的图像的体素的投影方差的差异引起的图像伪像。一种用计算机可执行指令编码的计算机可读存储介质，其在由计算机的处理器执行时使处理器能够：减少由用于更新一个或多个体素的图像的体素的投影差异的差异引起的图像伪像的图像使用迭代统计重建算法。

2. 发明授权

US09299169B2 Iterative reconstruction algorithm with a constant variance based weighting factor 有权
标题翻译：具有恒定方差加权因子的迭代重建算法
公开(公告)号：US09299169B2
公开(公告)日：2016-03-29
申请号：US13990450
申请日：2011-11-25
申请人： Bernhard Johannes Brendel , Thomas Koehler , Holger Schmitt , Rolf Dieter Bippus , Roland Proksa
发明人： Bernhard Johannes Brendel , Thomas Koehler , Holger Schmitt , Rolf Dieter Bippus , Roland Proksa
IPC分类号： G06T11/00
CPC分类号： G06T11/003 , G06T11/006 , G06T2211/424
摘要： A method includes reconstructing measured projection data using an iterative statistical reconstruction algorithm that reduces image artifact caused by differences in variances in projections of the measured projection data used to update a voxel of the image for one or more voxels of the image. A reconstructor includes a processor that reconstructs measured projection data using an iterative statistical reconstruction algorithm that reduces or mitigates image artifact caused by differences in variances in projections used to update a voxel of the image for one or more voxels of the image. A computer readable storage medium encoded with computer executable instructions, which, when executed by a processor of a computer, cause the processor to: reduce image artifact caused by differences in variances in projections used to update a voxel of an image for one or more voxels of the image using an iterative statistical reconstruction algorithm.
摘要翻译：一种方法包括使用迭代统计重建算法来重建测量的投影数据，所述迭代统计重构算法减少由用于更新图像的一个或多个体素的图像的体素的测量投影数据的投影方差的差异引起的图像伪像。重构器包括使用迭代统计重建算法来重建测量的投影数据的处理器，其减少或减轻由用于更新图像的一个或多个体素的图像的体素的投影方差的差异引起的图像伪像。一种用计算机可执行指令编码的计算机可读存储介质，其在由计算机的处理器执行时使处理器能够：减少由用于更新一个或多个体素的图像的体素的投影差异的差异引起的图像伪像的图像使用迭代统计重建算法。

3. 发明授权

US09002090B2 Forward projection apparatus 有权
标题翻译：前投投影仪
公开(公告)号：US09002090B2
公开(公告)日：2015-04-07
申请号：US13988349
申请日：2011-11-16
申请人： Thomas Koehler , Bernhard Johannes Brendel , Holger Schmitt , Rolf Dieter Bippus
发明人： Thomas Koehler , Bernhard Johannes Brendel , Holger Schmitt , Rolf Dieter Bippus
IPC分类号： G06K9/00 , G06T11/00
CPC分类号： G06T11/005 , G06T11/008 , G06T2211/424
摘要： The invention relates to a forward projection apparatus for performing a forward projection through an image (22), wherein at least one of a number of rays (20, 21) for performing the forward projection, a ray spacing between the rays and a kernel width of an interpolation kernel for calculating interpolated values located on the rays is varied depending on the ray width relative to an effective image element spacing between image elements (24) of the image. This allows reducing artifacts in simulated projection data and, thus, in an image, which is iteratively reconstructed by using the simulated projection data. For example, if the number of provided rays and/or the ray spacing between the provided rays is varied, aliasing artifacts can be reduced. Moreover, if the ray spacing between the provided rays and/or the kernel width of the interpolation kernel is varied, artifacts caused by varying effective kernel widths may be reduced.
摘要翻译：本发明涉及一种用于通过图像（22）进行向前投影的前投影装置，其中，用于执行向前投影的多个光线（20,21）中的至少一个，光线之间的光线间隔和核宽度用于计算位于光线上的内插值的插值内核根据相对于图像的图像元素（24）之间的有效图像元素间隔的光线宽度而变化。这允许减少模拟投影数据中的伪影，并因此减少通过使用模拟投影数据迭代重建的图像。例如，如果提供的光线的数量和/或所提供的光线之间的光线间隔变化，则可以减少混叠伪影。此外，如果所提供的光线之间的光线间距和/或内插核的内核宽度发生变化，则可能会降低由变化的有效内核宽度引起的伪影。

4. 发明申请

US20130243297A1 FORWARD PROJECTION APPARATUS 有权
标题翻译：前进投影装置
公开(公告)号：US20130243297A1
公开(公告)日：2013-09-19
申请号：US13988349
申请日：2011-11-16
申请人： Thomas Koehler , Bernhard Johannes Brendel , Holger Schmitt , Rolf Dieter Bippus
发明人： Thomas Koehler , Bernhard Johannes Brendel , Holger Schmitt , Rolf Dieter Bippus
IPC分类号： G06T11/00
CPC分类号： G06T11/005 , G06T11/008 , G06T2211/424
摘要： The invention relates to a forward projection apparatus for performing a forward projection through an image (22), wherein at least one of a number of rays (20, 21) for performing the forward projection, a ray spacing between the rays and a kernel width of an interpolation kernel for calculating interpolated values located on the rays is varied depending on the ray width relative to an effective image element spacing between image elements (24) of the image. This allows reducing artifacts in simulated projection data and, thus, in an image, which is iteratively reconstructed by using the simulated projection data. For example, if the number of provided rays and/or the ray spacing between the provided rays is varied, aliasing artifacts can be reduced. Moreover, if the ray spacing between the provided rays and/or the kernel width of the interpolation kernel is varied, artifacts caused by varying effective kernel widths may be reduced.
摘要翻译：本发明涉及一种用于通过图像（22）进行向前投影的前投影装置，其中，用于执行向前投影的多个光线（20,21）中的至少一个，光线之间的光线间隔和核宽度用于计算位于光线上的内插值的插值内核根据相对于图像的图像元素（24）之间的有效图像元素间隔的光线宽度而变化。这允许减少模拟投影数据中的伪影，并因此减少通过使用模拟投影数据迭代重建的图像。例如，如果提供的光线的数量和/或所提供的光线之间的光线间隔变化，则可以减少混叠伪影。此外，如果所提供的光线之间的光线间距和/或内插核的内核宽度发生变化，则可能会降低由变化的有效内核宽度引起的伪影。

5. 发明授权

US08438026B2 Method and system for generating training data for an automatic speech recognizer 有权
标题翻译：用于生成自动语音识别器的训练数据的方法和系统
公开(公告)号：US08438026B2
公开(公告)日：2013-05-07
申请号：US10597983
申请日：2005-02-10
申请人： Alexander Fischer , Rolf Dieter Bippus
发明人： Alexander Fischer , Rolf Dieter Bippus
IPC分类号： G10L15/06
CPC分类号： G10L21/038 , G10L15/063 , G10L15/065 , G10L2015/0631
摘要： The invention describes a method and a system for generating training data (DT) for an automatic speech recogniser (2) for operating at a particular first sampling frequency (fH), comprising steps of deriving spectral characteristics (SL) from audio data (DL) sampled at a second frequency (fL) lower than the first sampling frequency (fH), extending the bandwidth of the spectral characteristics (SL) by retrieving bandwidth extending informationOBE) from a codebook (6), and processing the bandwidth extended spectral characteristics (SLE) to give the required training data (DT). Moreover a method and a system (5) for generating a codebook (6) for extending the bandwidth of spectral characteristics (SL) for audio data (DL) sampled at a second sampling frequency (fL) to spectral characteristics (SH) for a first sampling frequency (fH) higher than the second sampling frequency (fL) are described.
摘要翻译：本发明描述了一种用于生成用于以特定的第一采样频率（fH）操作的自动语音识别器（2）的训练数据（DT）的方法和系统，包括以下步骤：从音频数据（DL）导出频谱特性（SL）以比第一采样频率（fH）低的第二频率（fL）进行采样，通过从码本（6）检索带宽扩展信息OBE来扩展频谱特性（SL）的带宽，并且处理带宽扩展频谱特性）给出所需的训练数据（DT）。此外，一种用于产生码本（6）的方法和系统（5），用于将用于以第二采样频率（fL）采样的音频数据（DL）的频谱特性（SL）的带宽扩展到频谱特性（SH），用于第一描述高于第二采样频率（fL）的采样频率（fH）。

6. 发明申请

US20120033864A1 HEART SEGMENTATION IN CARDIAC REST AND STRESS IMAGING 失效
标题翻译：心脏休息和应力成像中的心脏分期
公开(公告)号：US20120033864A1
公开(公告)日：2012-02-09
申请号：US13203515
申请日：2010-02-09
申请人： Herfried K. Wieczorek , Rolf Dieter Bippus
发明人： Herfried K. Wieczorek , Rolf Dieter Bippus
IPC分类号： G06K9/00
CPC分类号： G06T7/0081 , A61B5/055 , A61B6/00 , A61B6/03 , A61B6/037 , A61B6/507 , A61B6/541 , G06T7/11 , G06T2207/10108 , G06T2207/30048 , G06T2207/30101
摘要： A patient (14), at rest, is injected with a first isotope tracer. After a first uptake period, the patient is stressed and injected with a second isotope tracer. After a second isotope tracer uptake period, first and second isotope imaging data are concurrently detected by data acquiring devices (16). The first and second isotope imaging data are reconstructed into a first or rest state image, a second or stressed state image, and optionally a combined first and second isotope image. The image with the better image statistics is segmented to generate segmentation parameters, which segmentation parameters are applied to both the first or rest and second or stressed state images. In this manner, an image whose image statistics may be too weak for accurate segmentation is accurately segmented by generating two inherently aligned images and applying the same segmentation parameters to both.
摘要翻译：静止的患者（14）注射第一同位素示踪剂。在第一次摄取期后，患者受压并注射第二同位素示踪剂。在第二同位素示踪剂摄取期之后，第一和第二同位素成像数据由数据获取装置（16）同时检测。第一和第二同位素成像数据被重建成第一或静止状态图像，第二或应力状态图像，以及可选地组合的第一和第二同位素图像。具有更好的图像统计的图像被分割以生成分割参数，这些分割参数被应用于第一或第二或应力状态图像。以这种方式，通过产生两个固有排列的图像并且将相同的分割参数应用于两者，精确地分割图像统计可能太弱以进行精确分割的图像。

7. 发明申请

US20080215322A1 Method and System for Generating Training Data for an Automatic Speech Recogniser 有权
标题翻译：用于生成自动语音识别器的训练数据的方法和系统
公开(公告)号：US20080215322A1
公开(公告)日：2008-09-04
申请号：US10597983
申请日：2005-02-10
申请人： Alexander Fischer , Rolf Dieter Bippus
发明人： Alexander Fischer , Rolf Dieter Bippus
IPC分类号： G10L15/06
CPC分类号： G10L21/038 , G10L15/063 , G10L15/065 , G10L2015/0631
摘要： The invention describes a method and a system for generating training data (DT) for an automatic speech recogniser (2) for operating at a particular first sampling frequency (fH), comprising steps of deriving spectral characteristics (SL) from audio data (DL) sampled at a second frequency (fL) lower than the first sampling frequency (fH), extending the bandwidth of the spectral characteristics (SL) by retrieving bandwidth extending informationOBE) from a codebook (6), and processing the bandwidth extended spectral characteristics (SLE) to give the required training data (DT). Moreover a method and a system (5) for generating a codebook (6) for extending the bandwidth of spectral characteristics (SL) for audio data (DL) sampled at a second sampling frequency (fL) to spectral characteristics (SH) for a first sampling frequency (fH) higher than the second sampling frequency (fL) are described.
摘要翻译：本发明描述了一种用于产生用于在特定的第一采样频率（f H H）下操作的自动语音识别器（2）的训练数据（D SUB）的方法和系统，包括以下步骤：从低于第二频率（f L L L）采样的音频数据（D L L L）中导出频谱特性（S L L L）通过检索带宽扩展信息（SUBE OBE））来扩展频谱特性（S L1> L）的带宽的第一采样频率（f H H H）码本（6），并且处理带宽扩展频谱特性（S LE LE）以给出所需的训练数据（D SUB T）。此外，一种用于产生码本（6）的方法和系统（5），用于扩展用于在以下采样的音频数据（D L L）采样的频谱特性（D L L）的带宽的带宽对于高于第二采样的第一采样频率（f H H H），对频谱特性（S SUB H H）的第二采样频率（f L L）描述频率（fLL）。

8. 发明授权

US08774474B2 Heart segmentation in cardiac rest and stress imaging 失效
标题翻译：心脏停搏和应激成像心脏分割
公开(公告)号：US08774474B2
公开(公告)日：2014-07-08
申请号：US13203515
申请日：2010-02-09
申请人： Herfried K. Wieczorek , Rolf Dieter Bippus
发明人： Herfried K. Wieczorek , Rolf Dieter Bippus
IPC分类号： G06K9/00 , G06T7/00 , A61B5/055 , A61B6/03 , A61B6/00
CPC分类号： G06T7/0081 , A61B5/055 , A61B6/00 , A61B6/03 , A61B6/037 , A61B6/507 , A61B6/541 , G06T7/11 , G06T2207/10108 , G06T2207/30048 , G06T2207/30101
摘要： A patient (14), at rest, is injected with a first isotope tracer. After a first uptake period, the patient is stressed and injected with a second isotope tracer. After a second isotope tracer uptake period, first and second isotope imaging data are concurrently detected by data acquiring devices (16). The first and second isotope imaging data are reconstructed into a first or rest state image, a second or stressed state image, and optionally a combined first and second isotope image. The image with the better image statistics is segmented to generate segmentation parameters, which segmentation parameters are applied to both the first or rest and second or stressed state images. In this manner, an image whose image statistics may be too weak for accurate segmentation is accurately segmented by generating two inherently aligned images and applying the same segmentation parameters to both.
摘要翻译：静止的患者（14）注射第一同位素示踪剂。在第一次摄取期后，患者受压并注射第二同位素示踪剂。在第二同位素示踪剂摄取期之后，第一和第二同位素成像数据由数据获取装置（16）同时检测。第一和第二同位素成像数据被重建成第一或静止状态图像，第二或应力状态图像，以及可选地组合的第一和第二同位素图像。具有更好的图像统计的图像被分割以生成分割参数，这些分割参数被应用于第一或第二或应力状态图像。以这种方式，通过产生两个固有排列的图像并且将相同的分割参数应用于两者，精确地分割图像统计可能太弱以进行精确分割的图像。

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