利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

34 条记录 (耗时 0.021 秒)

    NOISE SUPPRESSION IN CONE BEAM CT PROJECTION DATA
    3.
    发明申请
    NOISE SUPPRESSION IN CONE BEAM CT PROJECTION DATA 有权
    锥形CT投影数据中的噪声抑制

    公开(公告)号：US20130094746A1

    公开(公告)日：2013-04-18

    申请号：US13693180

    申请日：2012-12-04

    申请人： Andre Souza ,  Peter D. Burns

    发明人： Andre Souza ,  Peter D. Burns

    IPC分类号： G06T7/00

    CPC分类号： G06T7/0012 ,  A61B6/027 ,  A61B6/5258 ,  G06T5/002 ,  G06T11/005 ,  G06T2207/10081

    摘要： A method for suppressing noise in a diagnostic 3-D image, executed at least in part on a logic processor, captures, at each of a number of projection angles, 2-D image projection data, wherein each 2-D image projection has a central pixel and arranges the 2-D image projection data to form a 3-D data set. Each of the 2-D image projections is processed by performing a diffusion filtering process that obtains a homogeneity value for the 3-D data set, generates a diffusion conductance function according to an intensity gradient between adjacent digital image elements, and applies the diffusion filtering process to digital image elements according to the obtained homogeneity value, the generated diffusion conductance function, and a weighting value that relates to the distance of each pixel in the projection from the central pixel. The diagnostic 3-D image is reconstructed from the processed 2-D image projections.

    摘要翻译： 至少部分地在逻辑处理器上执行的用于抑制诊断3-D图像中的噪声的方法在多个投影角度的每个投影角度捕获2-D图像投影数据，其中每个2-D图像投影具有 中心像素，并排列2-D图像投影数据，形成3-D数据集。 通过执行获得3-D数据集合的均匀性值的扩散滤波处理来处理每个2-D图像投影，根据相邻数字图像元素之间的强度梯度产生扩散电导函数，并施加扩散滤波 根据获得的均匀性值，所产生的扩散电导函数以及与投影中的每个像素与中心像素的距离相关的加权值对数字图像元素进行处理。 从处理的2-D图像投影重建诊断3-D图像。

    Asymmetrical digital filters for dot gain adjustments
    4.
    发明授权
    Asymmetrical digital filters for dot gain adjustments 有权
    用于网点增益调整的非对称数字滤波器

    公开(公告)号：US07826097B2

    公开(公告)日：2010-11-02

    申请号：US11754549

    申请日：2007-05-29

    申请人： Kurt M. Sanger ,  Gustav J. Braun ,  Peter D. Burns

    发明人： Kurt M. Sanger ,  Gustav J. Braun ,  Peter D. Burns

    IPC分类号： H04N1/405

    CPC分类号： H04N1/6052 ,  H04N1/40075 ,  H04N1/407

    摘要： A method for adjusting dot-gain for a halftone binary bitmap file comprises inputting a halftone binary bitmap file consisting of binary pixels (400) to an asymmetric digital filter (500). The binary pixels are filtered with the asymmetric digital filter and generates multi-level pixels (506). The multi-level pixel are compared to a preset level (408) and generates a binary pixel output (410). The binary pixel output is collected and forms an adjusted halftone binary bitmap file (270).

    摘要翻译： 用于调整半色调二进制位图文件的点增益的方法包括将由二进制像素（400）组成的半色调二进制位图文件输入到非对称数字滤波器（500）。 用非对称数字滤波器对二进制像素进行滤波，并生成多级像素（506）。 将多电平像素与预设电平（408）进行比较，并生成二进制像素输出（410）。 收集二进制像素输出并形成调整后的半色调二进制位图文件（270）。

    ARTIFACT SUPPRESSION IN DIAGNOSTIC IMAGES
    5.
    发明申请
    ARTIFACT SUPPRESSION IN DIAGNOSTIC IMAGES 有权
    诊断图像中的文艺抑制

    公开(公告)号：US20100119140A1

    公开(公告)日：2010-05-13

    申请号：US12341276

    申请日：2008-12-22

    申请人： Peter D. Burns ,  William J. Sehnert ,  Richard T. Scott

    发明人： Peter D. Burns ,  William J. Sehnert ,  Richard T. Scott

    IPC分类号： G06K9/00

    CPC分类号： G06T5/002 ,  G06T5/10 ,  G06T2207/10116 ,  G06T2207/20056 ,  G06T2207/30004

    摘要： A method of reducing artifacts in a digital radiographic image identifies either a row or column direction for the artifacts in the image data as a predominant direction and obtains a measurement of the image data frequency content that is subject to artifacts from the image content according to the predominant direction. The measurement of image data frequency content subject to the artifacts is tested according to a predetermined threshold. Artifacts are reduced when the predetermined threshold is exceeded by generating one or more suppression factors according to the testing results, decomposing the image content into at least two frequency bands in each row and column direction, applying the one or more suppression factors to modify at least one of the frequency bands, and recomposing the image content by recombining the at least one modified frequency band with one or more other bands into which the image had been decomposed.

    摘要翻译： 一种减少数字放射线照相图像中的伪像的方法，将图像数据中的假象的行或列方向标识为主要方向，并且根据图像内容从图像内容获得受到伪影的图像数据频率内容的测量 主导方向。 根据预定的阈值测试受制于伪像的图像数据频率内容的测量。 通过根据测试结果生成一个或多个抑制因子，将图像内容分解为每行和列方向中的至少两个频带，应用一个或多个抑制因子至少修改至少 通过将至少一个修改的频带与图像已被分解成的一个或多个其它频带重新组合来重构图像内容。

    NOISE SUPPRESSION IN DIAGNOSTIC IMAGES
    6.
    发明申请
    NOISE SUPPRESSION IN DIAGNOSTIC IMAGES 有权
    诊断图像中的噪声抑制

    公开(公告)号：US20100080430A1

    公开(公告)日：2010-04-01

    申请号：US12239844

    申请日：2008-09-29

    申请人： Andre Souza ,  Peter D. Burns

    发明人： Andre Souza ,  Peter D. Burns

    IPC分类号： G06K9/40

    CPC分类号： G06T7/11 ,  G06T2207/10072 ,  G06T2207/10076 ,  G06T2207/10081 ,  G06T2207/30036

    摘要： A method for suppressing noise in a diagnostic image executes one or more iterations of segmenting the image to identify and label one or more regions in the image; and performing selective diffusion on at least one of the one or more labeled regions in the image. A homogeneity value is computed for the region. A diffusion conductance function is generated for the region according to an intensity gradient between adjacent digital image elements within the region. The diffusion process is applied to a plurality of digital image elements within the region.

    摘要翻译： 用于抑制诊断图像中的噪声的方法执行分割图像的一个或多个迭代，以识别和标记图像中的一个或多个区域; 以及对图像中的一个或多个标记区域中的至少一个进行选择性扩散。 计算该区域的均匀性值。 根据区域内的相邻数字图像元素之间的强度梯度，为该区域产生扩散电导函数。 扩散处理被应用于该区域内的多个数字图像元素。

    Image processing for improvement of color registration in digital images
    8.
    发明授权
    Image processing for improvement of color registration in digital images 有权
    用于改进数字图像中颜色配准的图像处理

    公开(公告)号：US06870564B1

    公开(公告)日：2005-03-22

    申请号：US09406882

    申请日：1999-09-28

    申请人： Peter D. Burns

    发明人： Peter D. Burns

    IPC分类号： G06T3/00 ,  G06T7/00 ,  H04N9/093 ,  G06K9/32 ,  H04N5/228

    CPC分类号： H04N9/093 ,  G06T7/33

    摘要： A method for improving the wavelength dependent registration of digital images includes the steps of (a) detecting a similar feature in two or more digital records of the same scene, (b) determining from the feature a shift due to misregistration of at least one of the digital records relative to another of the digital records, and (c) processing the shifted digital record(s) with a digital filter having a phase response that compensates for the shift, thereby providing a correction for the wavelength dependent misregistration between the digital records.

    摘要翻译： 一种用于改善数字图像的波长相关注册的方法包括以下步骤：（a）检测相同场景的两个或多个数字记录中的类似特征，（b）从特征确定由于以下中的至少一个 相对于另一个数字记录的数字记录，以及（c）用具有补偿偏移的相位响应的数字滤波器来处理移位的数字记录，由此提供数字记录之间的波长相关的不对准的校正 。

    Method for modification of non-image data in an image processing chain
    9.
    发明授权
    Method for modification of non-image data in an image processing chain 有权
    在图像处理链中修改非图像数据的方法

    公开(公告)号：US06707950B1

    公开(公告)日：2004-03-16

    申请号：US09337792

    申请日：1999-06-22

    申请人： Peter D. Burns ,  Andrew C. Gallagher ,  Alex Lopez-Estrada

    发明人： Peter D. Burns ,  Andrew C. Gallagher ,  Alex Lopez-Estrada

    IPC分类号： G06K940

    CPC分类号： G06T1/00

    摘要： A method for modification of metadata in an image processing chain is disclosed. The method comprises the steps of: providing metadata corresponding to characteristics of a specific digital image; generating a metadata transformation related to at least one specific image transformation; and modifying the metadata according to the specific image transformation. The method is implemented in an image reproduction system. The system has an imaging capture device for providing digital image data. The imaging capture device can be for example a film scanner, flat bed scanner, or digital camera. A memory device stores metadata associated with the captured digital image data. The image transformations are carried out by an image processing chain. In addition to that a metadata processing chain is implemented and connected to the image processing chain in cases where the image transformations are metadata sensitive.

    摘要翻译： 公开了一种在图像处理链中修改元数据的方法。 该方法包括以下步骤：提供与特定数字图像的特征对应的元数据; 生成与至少一个特定图像变换相关的元数据变换; 以及根据特定图像变换修改元数据。 该方法在图像再现系统中实现。 该系统具有用于提供数字图像数据的成像捕获装置。 成像捕获装置可以是例如胶片扫描器，平板扫描器或数字照相机。 存储设备存储与捕获的数字图像数据相关联的元数据。 图像转换由图像处理链进行。 除了在图像变换是元数据敏感的情况下，实现元数据处理链并连接到图像处理链。

    Method for determining the components of image noise patterns of an imaging device and use of this method in an imaging device
    10.
    发明授权
    Method for determining the components of image noise patterns of an imaging device and use of this method in an imaging device 有权
    用于确定成像装置的图像噪声图案的分量的方法以及在成像装置中使用该方法

    公开(公告)号：US06584233B1

    公开(公告)日：2003-06-24

    申请号：US09356584

    申请日：1999-07-19

    申请人： Paul J. Kane ,  Theodore F. Bouk ,  Peter D. Burns

    发明人： Paul J. Kane ,  Theodore F. Bouk ,  Peter D. Burns

    IPC分类号： G06K940

    CPC分类号： G06K9/40 ,  H04N5/21 ,  H04N17/00

    摘要： A method and a computer program for determining at least one component of a noise pattern of an imaging device. The method comprises the steps of: providing flat field data; forming a preliminary estimate of banding components by computing one-dimensional averages of the flat field data and carrying out a Fourier analysis of the one dimensional averages; determining the banding components by carrying out a two-dimensional Fourier analysis of the original flat field data, and comparing the result to the preliminary estimate; removing the banding components from the flat field data, to obtain modified flat field data; forming a second preliminary estimate of streaking components by carrying out a Fourier analysis on the modified flat field data; determining the two-dimensional random noise statistics by carrying out a Fourier analysis on the modified flat field data; and determining the streaking components by modifying the preliminary estimate of the streaking components with the two-dimensional random noise statistics.

    摘要翻译： 一种用于确定成像装置的噪声图案的至少一个分量的方法和计算机程序。 该方法包括以下步骤：提供平坦场数据; 通过计算平坦场数据的一维平均值并对一维平均值进行傅立叶分析，形成条带分量的初步估计; 通过对原始平场数据进行二维傅立叶分析，并将结果与​​初步估计进行比较，确定条带分量; 从扁平场数据中去除条带组件，以获得修改的平场数据; 通过对修改的平场数据进行傅立叶分析，形成条纹分量的第二初步估计; 通过对修正的平场数据进行傅立叶分析来确定二维随机噪声统计; 以及通过用二维随机噪声统计修改条纹分量的初步估计来确定条纹分量。