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1. 发明申请

US20120275679A1 SYSTEM AND METHOD FOR SHUTTER DETECTION 审中-公开
标题翻译：快速检测系统及方法
公开(公告)号：US20120275679A1
公开(公告)日：2012-11-01
申请号：US13544573
申请日：2012-07-09
申请人： Songyang Yu , Vittorio Accomazzi , Paul Geiger
发明人： Songyang Yu , Vittorio Accomazzi , Paul Geiger
IPC分类号： G06T5/00
CPC分类号： G06T5/005 , A61B6/5252 , G06T7/12 , G06T7/194 , G06T2207/10116 , G06T2207/20016 , G06T2207/30004
摘要： Methods, systems, and computer-readable medium for detecting and removing unwanted information in a medical image. One method includes receiving, at a processor, an image, obtained using a shutter including at least a first blade and a second blade. The method also includes processing the image to identify a first plurality of candidate edges in the image for the first blade and a second plurality of candidate edges in the image for the second blade. The method further includes individually evaluating each of the first and second plurality of candidate edges to select one of the first plurality of candidate edges as a true edge for the first blade and one of the second plurality of candidate edges as a true edge for the second blade. In addition, the method includes removing the unwanted information from the image based on a location of each of the identified true edges.
摘要翻译：用于检测和去除医学图像中的不需要的信息的方法，系统和计算机可读介质。一种方法包括在处理器处接收使用包括至少第一叶片和第二叶片的快门获得的图像。该方法还包括处理图像以识别用于第一叶片的图像中的第一多个候选边缘和用于第二叶片的图像中的第二多个候选边缘。该方法还包括分别评估第一和第二多个候选边缘中的每一个，以选择第一多个候选边缘中的一个作为第一叶片的真实边缘，并且将第二多个候选边缘中的一个作为第二多个候选边缘的真实边缘刀。此外，该方法包括基于每个识别的真实边缘的位置从图像中去除不想要的信息。

2. 发明申请

US20080205785A1 METHOD AND SYSTEM FOR ENHANCING DIGITAL IMAGES 有权
标题翻译：用于增强数字图像的方法和系统
公开(公告)号：US20080205785A1
公开(公告)日：2008-08-28
申请号：US12118307
申请日：2008-05-09
申请人： Paul Geiger , Vittorio Accomazzi
发明人： Paul Geiger , Vittorio Accomazzi
IPC分类号： G06K9/40
CPC分类号： G06T5/20 , G06T5/004 , G06T5/007 , G06T2207/20016 , G06T2207/20032 , G06T2207/20048 , G06T2207/30004
摘要： A system and method for enhancing digital images is described. A digital image is transformed into a series of decomposed images in frequency bands, or different resolution grids. A decomposed image is noise suppressed and contrast enhanced. Representative value of signal at each pixel is computed based on contributions to signals from pixels in a neighborhood of the pixel. Lookup tables are applied to pixel values to selectively enhance signal in a predetermined range of signal strength. Another set of lookup tables are applied to pixel values to suppress noise components contained therein. Optionally, operations are applied to decomposed images to suppress quantum noise, enhance object edges or enhance global contrast, among others. These decomposed images, after signal enhancement and noise suppression, are then recombined to result in an enhanced image.
摘要翻译：描述了用于增强数字图像的系统和方法。数字图像被转换成频带中的一系列分解图像，或不同的分辨率网格。分解图像被噪声抑制和对比度增强。基于对来自像素附近的像素的信号的贡献来计算每个像素处的信号的代表值。将查找表应用于像素值以选择性地增强信号强度的预定范围内的信号。将另一组查找表应用于像素值以抑制其中包含的噪声分量。可选地，将操作应用于分解的图像以抑制量子噪声，增强对象边缘或增强全局对比度等。然后，在信号增强和噪声抑制之后，这些分解的图像被重新组合以产生增强的图像。

3. 发明授权

US07031505B2 Perspective with shear warp 失效
公开(公告)号：US07031505B2
公开(公告)日：2006-04-18
申请号：US10792126
申请日：2004-03-04
申请人： Vittorio Accomazzi
发明人： Vittorio Accomazzi
IPC分类号： G06K9/00
CPC分类号： G06T15/20 , G06T15/08
摘要： The present invention relates to a method for generating an 2-D projection directly from a 3-D volume data, the method comprising the steps of determining a viewing direction vector in a viewing frustum, determining a major axis of the direction vector, resampling the volume data in the direction of the major axis, applying a shear factorization to the resampled data; and rendering the factorized data. The method provides a singularly warped image which avoids have to patch images from multiple warp functions which, in turn, improves the quality of the final image. Finally, the image allows a scene to be rendered from within the scene itself. The invention can be applied to medical imaging and enable a surgeon to view an image such as a CT scan with perspective as well as from within the scan itself, providing the surgeon with an invaluable tool.

4. 发明授权

US08218879B2 System and method for shutter detection 有权
标题翻译：快门检测系统及方法
公开(公告)号：US08218879B2
公开(公告)日：2012-07-10
申请号：US11857546
申请日：2007-09-19
申请人： Songyang Yu , Vittorio Accomazzi , Paul Geiger
发明人： Songyang Yu , Vittorio Accomazzi , Paul Geiger
IPC分类号： G06K9/48
CPC分类号： G06T5/005 , A61B6/5252 , G06T7/12 , G06T7/194 , G06T2207/10116 , G06T2207/20016 , G06T2207/30004
摘要： A method for removing shutter areas in an image, in particular an x-ray image is provided. Edges are examined in a multi-resolution image pyramid and evaluated to determine potential shutter blade candidates defining the shutter areas. Heuristic rules and/or an automatic classifier such as a Neuronal Network, are applied to distinguish true shutter blades from false positives. The rule set and the classifier are based on a set of features extracted from the potential shutter blade candidates as well as predetermined knowledge of the expected placement of the shutter, human anatomy. Up to four shutter blades are expected to be detected and based on these blades, the bright areas in the image that occur due to the shutters are removed.
摘要翻译：提供了用于去除图像中的快门区域的方法，特别是X射线图像。在多分辨率图像金字塔中检查边缘并进行评估以确定限定快门区域的潜在快门叶片候选。应用启发式规则和/或自动分类器（如神经元网络）来区分真正的快门叶片与假阳性。规则集和分类器基于从潜在的快门叶片候选中提取的一组特征以及对快门，人体解剖学的预期放置的预定知识。预计最多可以检测到四个快门叶片，并且基于这些刀片，由于百叶窗而发生的图像中的明亮区域被去除。

5. 发明授权

US07596267B2 Image region segmentation system and method 有权
标题翻译：图像区域分割系统及方法
公开(公告)号：US07596267B2
公开(公告)日：2009-09-29
申请号：US10788481
申请日：2004-03-01
申请人： Vittorio Accomazzi , Renee Lazarowich , Christopher J. Barlow , Bruce Davey
发明人： Vittorio Accomazzi , Renee Lazarowich , Christopher J. Barlow , Bruce Davey
IPC分类号： G06K9/00
CPC分类号： G06K9/4638 , G06K9/346 , G06T7/11 , G06T7/187 , G06T2207/10081 , G06T2207/30101
摘要： The invention relates to a method of segmenting an image of a structure stored as a set of spatially related data points representing variations in a predetermined parameter, said method comprising the steps of selecting a seed point within the structure to be segmented, assigning to each of the data points a value of connectivity indicative of the confidence that respective areas of the data points are part of the same structure as said seed point, said value of connectivity including a function of the distance of the respective point from said seed point, establishing a threshold value for said level of connectivity and selecting for display data points meeting said threshold value.
摘要翻译：本发明涉及一种分割存储为表示预定参数中的变化的空间相关数据点集合的结构的图像的方法，所述方法包括以下步骤：选择待分割的结构内的种子点，分配给每个所述数据指示指示所述数据点的各个区域与所述种子点相同结构的一部分的置信度的连接值，所述连通性值包括相应点与所述种子点的距离的函数，建立用于所述连接级别的阈值，并且选择满足所述阈值的显示数据点。

6. 发明授权

US06995763B2 Interactive sculpting for volumetric exploration and feature extraction 失效
公开(公告)号：US06995763B2
公开(公告)日：2006-02-07
申请号：US09909900
申请日：2001-07-23
申请人： Claudio Gatti , Vittorio Accomazzi , Robert Chann
发明人： Claudio Gatti , Vittorio Accomazzi , Robert Chann
IPC分类号： G05T17/00
CPC分类号： G06T19/20 , G06T15/08 , G06T2210/41 , G06T2219/2021
摘要： The present invention provides a system of extracting a visual feature from a dataset, comprising a storage means for storing said dataset; retrieval means for retrieving said dataset from said storage means; display means for displaying an image of said retrieval dataset; means for defining a block of voxels corresponding to a selected portion of said displayed dataset, said block containing said visual feature therein; means for removing from said block voxels not containing said visual feature, to generate a feature block; means for generating a mask from said feature block; and means for rendering said dataset using said mask. A method of extracting visual features is also provided.

7. 发明授权

US08594444B2 Method and system for enhancing digital images 有权
标题翻译：增强数字图像的方法和系统
公开(公告)号：US08594444B2
公开(公告)日：2013-11-26
申请号：US12118307
申请日：2008-05-09
申请人： Paul Geiger , Vittorio Accomazzi
发明人： Paul Geiger , Vittorio Accomazzi
IPC分类号： G06K9/00
CPC分类号： G06T5/20 , G06T5/004 , G06T5/007 , G06T2207/20016 , G06T2207/20032 , G06T2207/20048 , G06T2207/30004
摘要： A system and method for enhancing digital images is described. A digital image is transformed into a series of decomposed images in frequency bands, or different resolution grids. A decomposed image is noise suppressed and contrast enhanced. Representative value of signal at each pixel is computed based on contributions to signals from pixels in a neighborhood of the pixel. Lookup tables are applied to pixel values to selectively enhance signal in a predetermined range of signal strength. Another set of lookup tables are applied to pixel values to suppress noise components contained therein. Optionally, operations are applied to decomposed images to suppress quantum noise, enhance object edges or enhance global contrast, among others. These decomposed images, after signal enhancement and noise suppression, are then recombined to result in an enhanced image.
摘要翻译：描述了用于增强数字图像的系统和方法。数字图像被转换成频带中的一系列分解图像，或不同的分辨率网格。分解图像被噪声抑制和对比度增强。基于对来自像素附近的像素的信号的贡献来计算每个像素处的信号的代表值。将查找表应用于像素值以选择性地增强信号强度的预定范围内的信号。将另一组查找表应用于像素值以抑制其中包含的噪声分量。可选地，将操作应用于分解的图像以抑制量子噪声，增强对象边缘或增强全局对比度等。然后，在信号增强和噪声抑制之后，这些分解的图像被重新组合以产生增强的图像。

8. 发明授权

US08036436B2 System and method for segmenting a region in a medical image 有权
标题翻译：用于分割医学图像中的区域的系统和方法
公开(公告)号：US08036436B2
公开(公告)日：2011-10-11
申请号：US11870193
申请日：2007-10-10
申请人： Paul Geiger , Vittorio Accomazzi
发明人： Paul Geiger , Vittorio Accomazzi
IPC分类号： G06K9/00 , G06K9/34
CPC分类号： G01S7/52084 , A61B8/13 , A61B8/469 , G01S7/52036 , G01S7/52074 , G01S15/8993 , G06K9/4638 , G06K2009/366 , G06K2209/051 , G06T7/12 , G06T7/149 , G06T2207/10132 , G06T2207/20092
摘要： A method and computer program are provided for segmenting a prostate from a medical image such as an ultrasound image. Each slice in a study is analysed and uses a manual initialization to obtain an initial contour, in which a user selects initial points that are automatically rendered on the image. An automatic refinement stage then snaps the contour to the prostate boundary in the image based on a pre-stored anatomical atlas and edge information obtained from the image. A manual adjustment stage may then be performed and if selected, the contour is automatically propagated to the next image slice to avoid the manual initialization. An auxiliary image slice may be referred to, which indicates how the prostate shape changes from slice to slice, e.g. by providing a perpendicular profile.
摘要翻译：提供了一种用于从诸如超声图像的医学图像分割前列腺的方法和计算机程序。分析研究中的每个切片，并使用手动初始化来获取初始轮廓，在该轮廓中用户选择自动呈现在图像上的初始点。然后，自动细化阶段基于从图像获得的预先存储的解剖图谱和边缘信息将轮廓锁定到图像中的前列腺边界。然后可以执行手动调整阶段，如果选择，轮廓将自动传播到下一个图像切片，以避免手动初始化。可以参考辅助图像切片，其指示前列腺形状如何从切片切换到切片。通过提供垂直轮廓。

9. 发明申请

US20080267468A1 System and Method for Segmenting a Region in a Medical Image 有权
标题翻译：用于分割医学图像中的区域的系统和方法
公开(公告)号：US20080267468A1
公开(公告)日：2008-10-30
申请号：US11870193
申请日：2007-10-10
申请人： Paul GEIGER , Vittorio Accomazzi
发明人： Paul GEIGER , Vittorio Accomazzi
IPC分类号： G06K9/46
CPC分类号： G01S7/52084 , A61B8/13 , A61B8/469 , G01S7/52036 , G01S7/52074 , G01S15/8993 , G06K9/4638 , G06K2009/366 , G06K2209/051 , G06T7/12 , G06T7/149 , G06T2207/10132 , G06T2207/20092
摘要： A method and computer program are provided for segmenting a prostate from a medical image such as an ultrasound image. Each slice in a study is analysed and uses a manual initialization to obtain an initial contour, in which a user selects initial points that are automatically rendered on the image. An automatic refinement stage then snaps the contour to the prostate boundary in the image based on a pre-stored anatomical atlas and edge information obtained from the image. A manual adjustment stage may then be performed and if selected, the contour is automatically propagated to the next image slice to avoid the manual initialization. An auxiliary image slice may be referred to, which indicates how the prostate shape changes from slice to slices e.g. by providing a perpendicular profile.
摘要翻译：提供了一种用于从诸如超声图像的医学图像分割前列腺的方法和计算机程序。分析研究中的每个切片，并使用手动初始化来获取初始轮廓，在该轮廓中用户选择自动呈现在图像上的初始点。然后，自动细化阶段基于从图像获得的预先存储的解剖图谱和边缘信息将轮廓锁定到图像中的前列腺边界。然后可以执行手动调整阶段，如果选择，轮廓将自动传播到下一个图像切片，以避免手动初始化。可以参考辅助图像切片，其指示前列腺形状如何从切片切换到切片切片。通过提供垂直轮廓。

10. 发明申请

US20080069470A1 SYSTEM AND METHOD FOR SHUTTER DETECTION 有权
标题翻译：快速检测系统及方法
公开(公告)号：US20080069470A1
公开(公告)日：2008-03-20
申请号：US11857546
申请日：2007-09-19
申请人： Songyang Yu , Vittorio Accomazzi , Paul Geiger
发明人： Songyang Yu , Vittorio Accomazzi , Paul Geiger
IPC分类号： G06K9/40
CPC分类号： G06T5/005 , A61B6/5252 , G06T7/12 , G06T7/194 , G06T2207/10116 , G06T2207/20016 , G06T2207/30004
摘要： A method for removing shutter areas in an image, in particular an x-ray image is provided. Edges are examined in a multi-resolution image pyramid and evaluated to determine potential shutter blade candidates defining the shutter areas. Heuristic rules and/or an automatic classifier such as a Neuronal Network, are applied to distinguish true shutter blades from false positives. The rule set and the classifier are based on a set of features extracted from the potential shutter blade candidates as well as predetermined knowledge of the expected placement of the shutter, human anatomy. Up to four shutter blades are expected to be detected and based on these blades, the bright areas in the image that occur due to the shutters are removed.
摘要翻译：提供了用于去除图像中的快门区域的方法，特别是X射线图像。在多分辨率图像金字塔中检查边缘并进行评估以确定限定快门区域的潜在快门叶片候选。应用启发式规则和/或自动分类器（如神经元网络）来区分真正的快门叶片与假阳性。规则集和分类器基于从潜在的快门叶片候选中提取的一组特征以及对快门，人体解剖学的预期放置的预定知识。预计最多可以检测到四个快门叶片，并且基于这些刀片，由于百叶窗而发生的图像中的明亮区域被去除。

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