公开(公告)号：US06744912B2

公开(公告)日：2004-06-01

申请号：US10167092

申请日：2002-06-10

申请人： Richard E. Colbeth ,  John M. Pavkovich ,  Edward J. Seppi ,  Edward G. Shapiro

发明人： Richard E. Colbeth ,  John M. Pavkovich ,  Edward J. Seppi ,  Edward G. Shapiro

IPC分类号： G06T500

CPC分类号： H04N5/367 ,  H04N5/32 ,  H04N5/335 ,  H04N5/347

摘要： A multiple mode digital X-ray imaging system providing for preprocessing “binning” of analog pixel signals from a detector array by selectively summing, within the detector array, adjacent pixel charges on a row-by-row basis and selectively summing, within detector array readout circuits, the previously summed pixel charges (by rows) on a column-by-column basis. An array, or mapping, of “defective pixel” flags is used to identify defective pixels within the detector array, with such flags being added to, or inserted into, the incoming data stream for dynamic processing along with the incoming pixel data. A buffer and filter is used to perform still image capture during the radiographic mode of operation and to recursively filter incoming data frames during the fluoroscopic mode of operation by summing a scaled amount of pixel data from prior data frames with a scaled amount of incoming pixel data from the present data frame.

摘要翻译： 一种多模式数字X射线成像系统，其通过在检测器阵列内以逐行为基础选择性地相加相邻像素电荷并在检测器阵列内进行选择性求和，来提供从检测器阵列“模拟”模拟像素信号 读出电路，先前相加的像素电荷（按行）逐列。 使用“缺陷像素”标志的阵列或映射来识别检测器阵列内的有缺陷的像素，其中这些标记被附加到输入数据流中或插入到输入数据流中，以便与输入像素数据一起进行动态处理。 使用缓冲器和滤波器在放射线照相操作模式下执行静态图像捕获，并且在荧光镜操作模式期间递归滤波输入数据帧，通过将来自先前数据帧的像素数据的缩放量与输入像素数据的标度量相加 从当前的数据帧。

公开(公告)号：US06728415B2

公开(公告)日：2004-04-27

申请号：US09823695

申请日：2001-03-30

申请人： Rodney Shaw

发明人： Rodney Shaw

IPC分类号： G06T500

CPC分类号： G06T5/20

摘要： A method of spatially filtering an image using an adaptive convolution filter is disclosed. The adaptive convolution filter has two major properties. First, size of the convolution filter adapts to the resolution density of the image being filtered. Second, values of the filter dynamically vary depending on an adaptive value that, in turn, depends on the output resolution.

摘要翻译： 公开了使用自适应卷积滤波器对图像进行空间滤波的方法。 自适应卷积滤波器具有两个主要特性。 首先，卷积滤波器的尺寸适应被滤波图像的分辨率密度。 第二，滤波器的值根据自适应值而动态变化，而自适应值又依赖于输出分辨率。

公开(公告)号：US06724944B1

公开(公告)日：2004-04-20

申请号：US09380918

申请日：2000-01-18

申请人： Ossi Kalevo ,  Marta Karczewicz

发明人： Ossi Kalevo ,  Marta Karczewicz

IPC分类号： G06T500

CPC分类号： H04N19/86 ,  H04N19/117 ,  H04N19/134 ,  H04N19/137 ,  H04N19/14 ,  H04N19/176 ,  H04N19/182 ,  H04N19/527 ,  H04N19/60 ,  H04N19/61 ,  H04N19/82

摘要： In order to remove blocking artifacts from a frame which has been coded by blocks and then decoded, a certain number of pixels (n) is selected for examination from both sides of the block boundary (30). The number of pixels selected for examination depends on the image content of the frame in the environment of the block boundary, particularly on the difference of the pixel values across the block boundary (30) and the size of the quantization step of the transformation coefficients used in the transformation coding of the blocks.

摘要翻译： 为了从已被块编码并随后解码的帧中去除块伪影，从块边界（30）的两侧选择一定数量的像素（n）进行检查。 选择用于检查的像素的数量取决于块边界环境中的帧的图像内容，特别是关于块边界（30）上的像素值的差异以及所使用的变换系数的量化步长的大小 在块的变换编码中。

公开(公告)号：US06697534B1

公开(公告)日：2004-02-24

申请号：US09328935

申请日：1999-06-09

申请人： Yap-Peng Tan ,  Ping-Sing Tsai ,  Tinku Acharya

发明人： Yap-Peng Tan ,  Ping-Sing Tsai ,  Tinku Acharya

IPC分类号： G06T500

CPC分类号： G06T5/20 ,  G06T5/003 ,  G06T2207/20012 ,  G06T2207/20192

摘要： Briefly, in accordance with one embodiment of the invention, a method of sharpening an image includes the following. A crispening parameter is adaptively computed for a local region of a captured image based, at least in part, on a measure of the local contrast and the local brightness. A kernel is applied to the local region of the captured image using the adaptively computed crispening parameter.

摘要翻译： 简而言之，根据本发明的一个实施例，一种锐化图像的方法包括以下。 至少部分地基于局部对比度和局部亮度的量度来自适应地计算捕获图像的局部区域的克隆参数。 使用自适应计算的克隆参数将内核应用于捕获图像的局部区域。

公开(公告)号：US06683995B2

公开(公告)日：2004-01-27

申请号：US09735238

申请日：2000-12-12

申请人： Gordon D. Ford ,  Leland A. Lester

发明人： Gordon D. Ford ,  Leland A. Lester

IPC分类号： G06T500

CPC分类号： H04N1/4097 ,  G06T5/005 ,  G06T2207/30176

摘要： An image processing system includes a defect correction system that identifies defective regions of a digital image using a defect map. The defect map is automatically created from an input image device. The defect correction system corrects the defective regions of the digital image using the non-defective regions of the digital image in accordance with various correction routines.

摘要翻译： 图像处理系统包括使用缺陷图识别数字图像的缺陷区域的缺陷校正系统。 从输入图像设备自动创建缺陷图。 缺陷校正系统根据各种校正程序，使用数字图像的无缺陷区域校正数字图像的缺陷区域。

公开(公告)号：US06654147B1

公开(公告)日：2003-11-25

申请号：US09348053

申请日：1999-07-06

申请人： Ran Lasco Ramot

发明人： Ran Lasco Ramot

IPC分类号： G06T500

CPC分类号： G06T5/002 ,  G06T11/40 ,  G06T2200/12

摘要： The present invention presents method and apparatus for anti-aliasing elements in pages containing variable information, to be printed by a digital printer. Each page element is pre-rasterized to a resolution higher by a given factor than the output resolution, and the pixels that belong to non-printable areas are denoted ‘Background’. During the anti-aliasing (averaging) process, each new pixel gets an attribute value, dependent on the higher resolution pixels that contributed to the new pixel: Background—if all contributing pixels were denoted ‘Background’. Opaque—if all contributing pixels were denote ‘Non-Background’. Semi-Background—if the contributing pixels were partly ‘Background’ and partly ‘Non-Backgroun’. One or two intermediate frame buffers serve to assemble sequentially, for each element, the pixel's value, when it is defined as ‘Opaque’, and the calculated new value, when it is defines as ‘Semi-Background’. A merging mechanism computes the final output value of each pixel using the values and attributes assigned to it.

摘要翻译： 本发明提供了一种用于在包含可由数字打印机打印的可变信息的页面中的抗锯齿元件的方法和装置。 每个页面元素被预先光栅化到比输出分辨率高一个给定因子的分辨率，并且属于不可打印区域的像素被表示为“背景”。 在反锯齿（平均）过程中，每个新像素获得属性值，取决于对新像素贡献的较高分辨率像素：背景 - 如果所有贡献像素都表示为“背景”。如果所有贡献像素都为 表示“非背景”。背景 - 如果贡献像素部分是“背景”和部分“非背景”。一个或两个中间帧缓冲器用于顺序地组合像素的值，对于每个元素，当它是 定义为“不透明”，以及计算的新值，当它被定义为“半背景”时。 合并机制使用分配给它的值和属性来计算每个像素的最终输出值。

公开(公告)号：US06614946B1

公开(公告)日：2003-09-02

申请号：US09679990

申请日：2000-10-05

申请人： Albert D. Edgar ,  Thomas A. Dundon

发明人： Albert D. Edgar ,  Thomas A. Dundon

IPC分类号： G06T500

CPC分类号： H04N5/367 ,  G02F1/1309 ,  G02F1/13306 ,  G06T5/005 ,  G06T5/20 ,  H04N1/4097

摘要： A system and method for correcting defects in an image. A correction area surrounding the defective pixel is dynamically chosen to include a predetermined percentage of non-defective pixels. The percentage is varied as a function of the size of the surrounding region, such that the percentage decreases as the size of the region increases. The shape of the surrounding area may be varied to further enhance the correction procedure. A center of gravity is maintained around the defective pixel by defining subregions surrounding the pixel.

摘要翻译： 一种用于校正图像中的缺陷的系统和方法。 动态地选择围绕缺陷像素的校正区域以包括预定百分比的无缺陷像素。 该百分比随着周围区域的大小而变化，使得该百分比随着区域尺寸的增加而减小。 可以改变周围区域的形状以进一步增强校正过程。 通过限定像素周围的子区域，重心被保持在缺陷像素周围。

公开(公告)号：US06501472B1

公开(公告)日：2002-12-31

申请号：US09036268

申请日：1998-03-06

申请人： William J. Hunt ,  Edward James Neil ,  Steven P. Haber ,  Russell D. Wood

发明人： William J. Hunt ,  Edward James Neil ,  Steven P. Haber ,  Russell D. Wood

IPC分类号： G06T500

CPC分类号： H04L47/10 ,  G06F17/2258 ,  G06F17/30905 ,  H04L29/06 ,  H04L29/06027 ,  H04L65/4084 ,  H04L65/602 ,  H04L67/02 ,  H04L67/2823 ,  H04L67/2828 ,  H04L67/42 ,  H04L69/04 ,  H04L69/24 ,  H04L69/329

摘要： Techniques for transmitting graphical images in a network environment are described. According to the techniques, the amount of data of the graphical images that is transmitted is customized in accordance with client and/or server supplied information. The techniques enable graphical images to be transmitted more efficiently than previously possible, thus saving precious network bandwidth and reducing transmission time. The invention is particularly suitable for network (intranet or Internet) implementations wherein graphical images often need transferred.

摘要翻译： 描述了在网络环境中传输图形图像的技术。 根据这些技术，根据客户端和/或服务器提供的信息定制发送的图形图像的数据量。 这些技术使图形图像能够比以前更有效地传输图形图像，从而节省宝贵的网络带宽并减少传输时间。 本发明特别适用于其中图形图像经常需要传送的网络（内联网或互联网）实现。

公开(公告)号：US06466689B1

公开(公告)日：2002-10-15

申请号：US08173935

申请日：1993-12-28

申请人： Heber MacMahon

发明人： Heber MacMahon

IPC分类号： G06T500

CPC分类号： G06T5/004 ,  Y10S128/922

摘要： A system and method for digital imaging. A digital radiological image of a subject is obtained having at least one low density region. The image is processed using first weighting factors in the at least one low density region of the digital image and second weighting factors smaller than the first weighting factors in regions of the digital image other than the at least one low density region. A processed digital image is obtained and a representation of the processed digital image is produced. In the processing of the image, unsharp mask filtering is employed using a processing curve having maximum unsharp mask filtering in the at least one low density region of the digital image and a constant amount of unsharp mask filtering less than the maximum unsharp mask filtering in the regions of the image other than the low density regions.

摘要翻译： 一种用于数字成像的系统和方法。 获得具有至少一个低密度区域的受试者的数字放射图像。 使用数字图像的至少一个低密度区域中的第一加权因子和小于除了至少一个低密度区域之外的数字图像的区域中的第一加权因子的第二加权因子来处理图像。 获得经处理的数字图像，并且产生经处理的数字图像的表示。 在图像的处理中，使用在数字图像的至少一个低密度区域中具有最大不清晰掩模滤波的处理曲线和小于在数字图像中的最大钝化掩模滤波的恒定量的不清晰掩模滤波 低密度区域以外的图像区域。

公开(公告)号：US06418241B1

公开(公告)日：2002-07-09

申请号：US09166538

申请日：1998-10-06

申请人： Horst Schreiner

发明人： Horst Schreiner

IPC分类号： G06T500

CPC分类号： H04N5/367 ,  H04N5/32 ,  H04N5/361 ,  H04N5/3651

摘要： In a method for determining row correction values for a digital image converter, with image points arranged in a matrix in rows and columns, in which a small part is protected against radiation by a covering, in order to form a dark reference zone, row correction values are formed by determining the differences of the image points in the dark reference zone in relation to their environment with defective pixels in the dark reference zone being determined and are suppressed in the determination of the row correction value.

摘要翻译： 在一种用于确定数字图像转换器的行校正值的方法中，其中图像点以行和列排列成矩阵，其中小部分被覆盖物防止辐射，以便形成暗参考区域，行校正 通过确定暗参考区域中的图像点与其环境的差异来形成值，并且在确定行校正值时抑制暗参考区域中的缺陷像素。