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公开(公告)号：US07623692B2
公开(公告)日：2009-11-24
申请号：US11187676
申请日：2005-07-22
IPC分类号： G06K9/00
CPC分类号： G06T7/0012 , G06T2207/30061
摘要： A method of generating a pulmonary nodule image from a chest radiograph. The method includes the steps of: producing a map of a clear lung field; removing low frequency variation from the clear lung field to generate a level image; and performing at least one grayscale morphological operation on the level image to generate a nodule-bone image. Pulmonary nodules can be detected using the nodule-bone image by the further steps of: pulmonary nodules from a chest radiograph. The method includes the steps of: identifying candidate nodule locations in the nodule-bone image; segmenting a region around each candidate nodule location in the nodule-bone image; and using the features of the segmented region to determine if a candidate is a nodule.
摘要翻译： 从胸部X光片产生肺结节图像的方法。 该方法包括以下步骤：产生清晰肺域的图; 从清除肺域去除低频变化以产生水平图像; 以及对所述水平图像执行至少一个灰度形态学运算以产生结节 - 骨图像。 肺结节可以使用结节 - 骨图像进一步检测：肺结核从胸部X光照片。 该方法包括以下步骤：识别结节 - 骨图像中的候选结节位置; 分割结节骨图像中每个候选结节位置周围的区域; 并使用分割区域的特征来确定候选者是否是结节。
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2.发明申请公开(公告)号：US20080279440A1
公开(公告)日：2008-11-13
申请号：US12180589
申请日：2008-07-28
CPC分类号： G06T5/004 , G06T2207/20016
摘要： A system for enhancing a digital image. The system includes: means for providing a digital image; means for decomposing the provided digital image into a multi-frequency band representation of four frequency bands as follows: a lowest frequency band image which represents large-sized features in the digital image; a low-to-mid frequency band image which represents mid-sized features of the digital image; a mid-to-high frequency band image which represents the small-sized features in the digital image; and a highest frequency band which represents very fine detail in the digital image; means for manipulating said low-to-mid frequency band image to produce a contrast effect without affecting the overall dynamic range of said digital image; means for multiplying each of said high-frequency band images with a gain factor; means for summing together said unmodified low frequency band image and said modified high-frequency band images to produce a reconstructed digital image; and means for mapping said reconstructed digital image through a tone-scale look-up table to map said reconstructed digital image to optical densities.
摘要翻译： 一种用于增强数字图像的系统。 该系统包括：用于提供数字图像的装置; 用于将所提供的数字图像分解为四个频带的多频带表示的装置，如下：表示数字图像中的大尺寸特征的最低频带图像; 表示数字图像的中等尺寸特征的低到中频带图像; 代表数字图像中的小尺寸特征的中到高频带图像; 以及在数字图像中表示非常精细细节的最高频带; 用于操纵所述低至中频带图像以产生对比度效果而不影响所述数字图像的整体动态范围的装置; 用于将每个所述高频带图像与增益因子相乘的装置; 用于将所述未修改的低频带图像和所述修改的高频带图像相加在一起以产生重构的数字图像的装置; 以及用于通过色调尺度查找表映射所述重建的数字图像以将所述重建的数字图像映射到光密度的装置。
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公开(公告)号：US07386155B2
公开(公告)日：2008-06-10
申请号：US10994719
申请日：2004-11-22
IPC分类号： G06K9/00
CPC分类号： G06T7/0012 , G06T5/001 , G06T2207/10116 , G06T2207/20092 , G06T2207/30004
摘要： A method for transforming visual preference terminology into a set of fundamental image-quality attributes, and using these attributes to produce a display ready radiographic image that meets the desired appearance. The visual preference terminology can be specified in a hierarchical structure providing a flexible and configurable interface to a radiographic system.
摘要翻译： 一种用于将视觉偏好术语转换为一组基本图像质量属性的方法，并且使用这些属性来产生满足期望外观的显示准备放射照相图像。 可以在分层结构中指定视觉偏好术语，为射线照相系统提供灵活且可配置的界面。
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4.发明授权Method for rendering digital radiographic images for display based on independent control of fundamental image quality parameters 有权用于基于对基本图像质量参数的独立控制来渲染用于显示的数字放射照相图像的方法公开(公告)号：US07266229B2
公开(公告)日：2007-09-04
申请号：US10625964
申请日：2003-07-24
CPC分类号： G06T5/004 , G06T2207/20016
摘要： A method of enhancing a digital image comprising: providing a digital image; decomposing the provided digital image into a multi-frequency band representation including a low frequency band image and multiple different high frequency band images; multiplying each of the high-frequency band images with a gain factor; summing together the unmodified low frequency band image and the modified high-frequency band images to produce a reconstructed digital image; and mapping the reconstructed digital image through a tone-scale look-up-table to map the reconstructed digital image to optical densities
摘要翻译： 一种增强数字图像的方法，包括：提供数字图像; 将所提供的数字图像分解成包括低频带图像和多个不同的高频带图像的多频带表示; 将每个高频带图像与增益因子相乘; 将未修改的低频带图像和修改的高频带图像相加在一起以产生重构的数字图像; 并通过色阶式查找表映射重建的数字图像，以将重建的数字图像映射到光密度
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5.发明授权Method and system for detection and characterization of open space in digital images 失效数字图像中开放空间的检测和表征方法及系统
公开(公告)号：US5901245A
公开(公告)日：1999-05-04
申请号：US786932
申请日：1997-01-23
申请人： James Warnick , Rajiv Mehrotra , Robert A. Senn
发明人： James Warnick , Rajiv Mehrotra , Robert A. Senn
CPC分类号： G06F17/30247 , G06K9/3233 , G06K9/4647 , Y10S707/99943 , Y10S707/99945
摘要： A method for detecting open space in a digital image, the method comprises the steps of creating an activity map for permitting determination of the activity of the digital image; determining which pixels in the activity map are below a threshold; and identifying open space as contiguous pixels of the activity map having values below the predetermined threshold.
摘要翻译： 一种用于检测数字图像中的开放空间的方法，所述方法包括以下步骤：创建允许确定所述数字图像的活动的活动图; 确定活动图中的哪些像素低于阈值; 以及将所述活动图的连续像素的开放空间识别为具有低于所述预定阈值的值。
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公开(公告)号：US5901240A
公开(公告)日：1999-05-04
申请号：US766196
申请日：1996-12-12
申请人： Jiebo Luo , Robert A. Senn
发明人： Jiebo Luo , Robert A. Senn
CPC分类号： G06T7/0081 , G06T7/0012 , G06T2207/10116 , G06T2207/20061 , G06T2207/20144 , G06T2207/30004
摘要： A method of processing a digital radiographic image includes the following the steps. (1) A digital radiographic image having a radiation region and a collimation region defined by collimation blades at least partially bounding the radiation region is provided. (2) Pixels of the digital radiographic image are detected and classified as collimation boundary transition pixels. (3) Candidate collimation blades are detected and classified from the collimation boundary transition pixels. (4) At a regional level, the collimation region are determined from the results of the line-level delineating step.
摘要翻译： 一种处理数字放射照相图像的方法包括以下步骤。 （1）提供具有至少部分地限制辐射区域的由准直刀片限定的辐射区域和准直区域的数字放射线照相图像。 （2）数字放射线图像的像素被检测并分类为准直边界转变像素。 （3）从准直边界转移像素中检测和分类候选准直叶片。 （4）在区域一级，根据线级划分步骤的结果确定准直区域。
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公开(公告)号：US09202296B2
公开(公告)日：2015-12-01
申请号：US13234472
申请日：2011-09-16
申请人： Dong Yang , Robert A. Senn
发明人： Dong Yang , Robert A. Senn
CPC分类号： G06T11/008 , A61B6/5258 , G06F3/00 , G06K9/00221 , G06K9/00335 , G06K9/00389
摘要： A method for suppressing metal artifacts in a radiographic image, the method executed at least in part on a computer, obtains at least one two-dimensional radiographic image of a subject, wherein the subject has one or more metal objects and identifies a material that forms the one or more metal objects and a radiation energy level used to generate the obtained image. The obtained radiographic image is segmented to identify boundaries of the metal object. A conditioned radiographic image is formed by replacing pixel values in the radiographic image that correspond to the one or more metal objects with compensating pixel values according to the identified material and the identified radiation energy level. The conditioned radiographic image is then displayed.
摘要翻译： 一种用于抑制放射线照相图像中的金属伪影的方法，所述方法至少部分地在计算机上执行，获得被摄体的至少一个二维放射照相图像，其中所述对象具有一个或多个金属物体，并且识别形成 一个或多个金属物体和用于产生所获得的图像的辐射能级。 所获得的放射线照相图像被分割以识别金属物体的边界。 通过根据所识别的材料和识别的辐射能量水平，通过用与补偿像素值对应的一个或多个金属物体的放射线照相图像中的像素值替换条件放射线照相图像。 然后显示条件放射照相图像。
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公开(公告)号：US20130070991A1
公开(公告)日：2013-03-21
申请号：US13234472
申请日：2011-09-16
申请人： Dong Yang , Robert A. Senn
发明人： Dong Yang , Robert A. Senn
IPC分类号： G06K9/00
CPC分类号： G06T11/008 , A61B6/5258 , G06F3/00 , G06K9/00221 , G06K9/00335 , G06K9/00389
摘要： A method for suppressing metal artifacts in a radiographic image, the method executed at least in part on a computer, obtains at least one two-dimensional radiographic image of a subject, wherein the subject has one or more metal objects and identifies a material that forms the one or more metal objects and a radiation energy level used to generate the obtained image. The obtained radiographic image is segmented to identify boundaries of the metal object. A conditioned radiographic image is formed by replacing pixel values in the radiographic image that correspond to the one or more metal objects with compensating pixel values according to the identified material and the identified radiation energy level. The conditioned radiographic image is then displayed.
摘要翻译： 一种用于抑制放射线照相图像中的金属伪影的方法，所述方法至少部分地在计算机上执行，获得被摄体的至少一个二维放射照相图像，其中所述对象具有一个或多个金属物体，并且识别形成 一个或多个金属物体和用于产生所获得的图像的辐射能级。 所获得的放射线照相图像被分割以识别金属物体的边界。 通过根据所识别的材料和识别的辐射能量水平，通过用与补偿像素值对应的一个或多个金属物体的放射线照相图像中的像素值替换条件放射线照相图像。 然后显示条件放射照相图像。
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公开(公告)号：US20120019512A1
公开(公告)日：2012-01-26
申请号：US12841363
申请日：2010-07-22
申请人： Dong Yang , Nathan J. Packard , Robert A. Senn , John Yorkston , David H. Foos
发明人： Dong Yang , Nathan J. Packard , Robert A. Senn , John Yorkston , David H. Foos
CPC分类号： G06T11/005
摘要： A method for 3-D volume image reconstruction of a subject, executed at least in part on a computer, obtains image data for 2-D projection images over a range of scan angles. For each of the plurality of projection images, a noise-corrected projection image is generated by steps of transforming the image data according to a variance-stabilizing transform to provide transformed image data, applying Gaussian based noise suppression to the transformed image data, and inverting the transformation of the noise-suppressed transformed image data to generate the noise-corrected projection image. The noise-corrected projection image is stored in a computer-accessible memory.
摘要翻译： 至少部分地在计算机上执行的被摄体的3-D体积图像重建方法在扫描角度范围内获得2-D投影图像的图像数据。 对于多个投影图像中的每一个，通过根据方差稳定化变换来转换图像数据的步骤来生成经噪声校正的投影图像，以提供变换图像数据，对经变换的图像数据应用基于高斯的噪声抑制，以及反转 噪声抑制变换图像数据的变换，以产生经噪声校正的投影图像。 经噪声校正的投影图像存储在计算机可访问存储器中。
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公开(公告)号：US20110317894A1
公开(公告)日：2011-12-29
申请号：US12821405
申请日：2010-06-23
申请人： Dong Yang , Robert A. Senn
发明人： Dong Yang , Robert A. Senn
IPC分类号： G06K9/00
CPC分类号： G06T11/005 , G06T2211/432
摘要： A method for 3-D volume image reconstruction of a subject. 2-D projection images are obtained over a range of scan angles, and one or more truncated images are identified from the obtained images. From each of the one or more truncated images, a corrected truncated image is formed by a repeated process of identifying a row of image data values in the one or more truncated images, assigning an extension length to one or both ends of the row according to the row location in the truncated image, and extending the truncated image data for the row of image data values by applying a row-dependent cosine function to each value in the extension length. A 3-D volume image is reconstructed using one or more of the corrected truncated images.
摘要翻译： 一种用于3-D体积图像重建的方法。 在扫描角度的范围内获得2-D投影图像，并且从所获得的图像中识别一个或多个截断的图像。 从一个或多个截断的图像中的每一个中，通过识别一个或多个截断的图像中的一行图像数据值的重复处理形成校正的截断图像，根据该截断图像向该行的一端或两端分配延伸长度 在截断的图像中的行位置，并且通过对延伸长度中的每个值应用行依赖余弦函数来扩展图像数据值行的截断的图像数据。 使用一个或多个校正的截断图像重建3-D体积图像。
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