公开(公告)号：US5959290A

公开(公告)日：1999-09-28

申请号：US004346

申请日：1998-01-08

申请人： Stuart A. Schweid ,  Leon C. Williams

发明人： Stuart A. Schweid ,  Leon C. Williams

IPC分类号： H04N1/04 ,  H04N1/00 ,  H04N1/38 ,  H04N1/40 ,  H01J40/14

CPC分类号： H04N1/00801 ,  H04N1/00795 ,  H04N1/38 ,  H04N2201/0422

摘要： A system and method which enables the location and orientation of an image to be determined without introducing scanning artifacts into the rendered image. The system utilizes a separate set of sensors on a scanning bar that are sensitive to a wavelength of light outside the range of wavelengths of the typical sensors found on the scanning bar, such as red, green, or blue. Moreover, the system includes a light source which is capable of emitting the wavelength of light that is outside this range of wavelength of light. Thus, whenever the additional set of sensors detect light, the system would determine that the light was due to a scanning artifact, such as a hole, rip, or dog ear in the original document being scanned. Furthermore, the system would include a process which measures the variations of the image signal in the fastscan and slowscan directions, as well as, the gray level of the video signal from these various measurements, the system would develop a cost value as to the certainty as whether the signal represents a scanning artifact. In such a system, the backing would be embedded with a pattern which would have a predetermined variation in a fastscan direction but have little or no variation in a slowscan direction.

公开(公告)号：US5778156A

公开(公告)日：1998-07-07

申请号：US646608

申请日：1996-05-08

申请人： Stuart A. Schweid ,  Thomas R. Beikirch ,  Leon C. Williams

发明人： Stuart A. Schweid ,  Thomas R. Beikirch ,  Leon C. Williams

IPC分类号： G06T5/00 ,  G06K9/62 ,  G06F9/44 ,  G06K9/36

CPC分类号： G06T7/0081 ,  G06T7/0087 ,  G06T2207/10016 ,  G06T2207/30176

摘要： A system and method electronically image process a pixel belonging to a set of digital image data with respect to a membership of the pixel in a plurality of image classes. This process uses classification to determine a membership value for the pixel for each image classes and generates an effect tag for the pixel based on the fuzzy classification determination. The pixel is image processed based on the membership vector of the pixel. The image processing may include screening and filtering. The screening process screens the pixel by generating a screen value according to a position of the pixel in the set of digital image data; generating a screen amplitude weighting value based on the values in the membership vector for the pixel; multiplying the screen value and the screen amplitude weighting value to produce a modified screen value; and adding the modified screen value to the pixel of image data. The filtering process filters the pixel by lowpass filtering the pixel; highpass filtering the pixel; non-filtering the pixel; multiplying each filtered pixel by a gain factor based on the values in the membership vector associated with the pixel; and adding the products to produce a filtered pixel of image data.

摘要翻译： 一种系统和方法电子图像处理属于一组数字图像数据的像素相对于多个图像类别中的像素的隶属度。 该过程使用分类来确定每个图像类别的像素的隶属度值，并且基于模糊分类确定来生成像素的效应标签。 基于像素的隶属矢量对像素进行图像处理。 图像处理可以包括筛选和过滤。 筛选过程通过根据数字图像数据集合中的像素的位置生成屏幕值来屏蔽像素; 基于所述像素的隶属向量中的值生成屏幕幅度加权值; 将屏幕值和屏幕振幅加权值相乘以产生修改的屏幕值; 并将修改的屏幕值添加到图像数据的像素。 滤波过程通过对像素进行低通滤波来过滤像素; 高通滤波像素; 不过滤像素; 基于与像素相关联的成员向量中的值，将每个经滤波的像素乘以增益因子; 并添加产品以产生图像数据的滤波像素。

公开(公告)号：US08467089B2

公开(公告)日：2013-06-18

申请号：US12276810

申请日：2008-11-24

申请人： Robert P. Loce ,  Beilei Xu ,  Stuart A. Schweid

发明人： Robert P. Loce ,  Beilei Xu ,  Stuart A. Schweid

IPC分类号： G06F15/00 ,  G06K9/40

CPC分类号： H04N1/4092 ,  G06K15/02 ,  G06T5/003 ,  G06T2207/20192 ,  G06T2207/30176

摘要： A system and method for processing a digital image for rendering are provided. The method includes performing one or more Line Width Control (LWC) operations on digital image data including pixels having pixel values representing gray levels and tag states providing information for specialized rendering techniques thereby changing one or more pixel values resulting in one or more inaccurate pixel tag states, identifying and reassigning one or more inaccurate pixel tag states for improving the rendering of the resultant digital image. An apparatus, such as an image processing system, capable of performing line width control and tag reassignment is also provided.

摘要翻译： 提供了一种用于处理用于渲染的数字图像的系统和方法。 该方法包括对数字图像数据执行一个或多个线宽控制（LWC）操作，包括具有表示灰度级的像素值的像素和为特殊渲染技术提供信息的标签状态，从而改变一个或多个像素值，导致一个或多个不准确的像素标记 状态，识别和重新分配一个或多个不准确的像素标签状态，以改善所得数字图像的渲染。 还提供了能够执行线宽控制和标签重新分配的诸如图像处理系统的装置。

公开(公告)号：US07539351B2

公开(公告)日：2009-05-26

申请号：US11156431

申请日：2005-06-20

申请人： Beilei Xu ,  Robert P. Loce ,  Stuart A. Schweid

发明人： Beilei Xu ,  Robert P. Loce ,  Stuart A. Schweid

IPC分类号： G06K9/36

CPC分类号： H04N1/4092 ,  G06T5/002 ,  G06T7/13 ,  G06T11/203

摘要： Image object adjustment is achieved without lookup tables or templates. Cross sections of image objects are modeled. Parameters of the modeled cross-section are adjusted in accord with a desired effect. For example, a width of the modeled cross section is change. The changed cross section model is sampled to determine a new value for a target pixel. For instance, vector windows are applied to a target pixel. If a candidate image object is included in the vector window, a cross section thereof is modeled as a rectangle. A parameter of the model, such as a width, is adjusted. Area sampling of the adjusted model can be used to determine a new value for the target pixel. Accuracy can be increased by blending information associated with a plurality of vector windows.

摘要翻译： 没有查找表或模板实现图像对象调整。 图像对象的横截面被建模。 根据期望的效果调整建模横截面的参数。 例如，建模的横截面的宽度是变化的。 对变化的截面模型进行采样，以确定目标像素的新值。 例如，矢量窗口被应用于目标像素。 如果候选图像对象包括在向量窗口中，则其横截面被建模为矩形。 调整模型的参数，如宽度。 可以使用经调整的模型的面积采样来确定目标像素的新值。 可以通过混合与多个向量窗口相关联的信息来提高精度。

公开(公告)号：US20090003729A1

公开(公告)日：2009-01-01

申请号：US11823893

申请日：2007-06-29

申请人： David J. Metcalfe ,  Terri A. Clingerman ,  Stuart A. Schweid ,  Howard Mizes

发明人： David J. Metcalfe ,  Terri A. Clingerman ,  Stuart A. Schweid ,  Howard Mizes

IPC分类号： G06K9/36

CPC分类号： H04N1/00002 ,  H04N1/00005 ,  H04N1/00015 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/4015 ,  H04N1/409

摘要： Defects in an image forming system may give rise to scratched fiducials, missing fiducial regions, or other defects in an image that can run parallel to the process direction. The present disclosure provides for a fiducial compensation method and system for detecting defects thereby allowing spatial tone reproduction curves to be calculated and applied to a digital image in order to eliminate printed streaks due to a photoreceptor's non-uniformities.

摘要翻译： 图像形成系统中的缺陷可能会导致划痕的基准，缺失的基准区域或图像中可能平行于过程方向运行的其他缺陷。 本公开提供了用于检测缺陷的基准补偿方法和系统，从而允许空间色调再现曲线被计算并应用于数字图像，以便消除由于感光体的不均匀性引起的印刷条纹。

公开(公告)号：US07366354B2

公开(公告)日：2008-04-29

申请号：US10879026

申请日：2004-06-30

申请人： Stuart A. Schweid ,  Roger L. Triplett ,  Gene M. Nitschke ,  Xing Li

发明人： Stuart A. Schweid ,  Roger L. Triplett ,  Gene M. Nitschke ,  Xing Li

IPC分类号： G06K9/36

CPC分类号： H04N1/64

摘要： This invention relates to an imaging device that extends the processing of resources to data having a greater bit-depth. A signal having data at the first bit-depth is received, and at least a portion of the data at the first bit-depth is converted into an estimated value that is at the second bit-depth. A residual that indicates a difference between the data and the estimated value is determined. The estimated value is processed through the resource to form processed data that is at the second bit-depth. The data is then substantially recovered at the first bit-depth from the processed data that is at the second bit-depth and based on the residual.

摘要翻译： 本发明涉及将资源处理扩展到具有更大位深度的数据的成像装置。 接收具有第一位深度的数据的信号，并且将第一位深度处的数据的至少一部分转换为处于第二位深度的估计值。 确定指示数据与估计值之间的差的残差。 通过资源处理估计值，以形成处于第二位深处的数据。 然后，在处于第二位深处的处理数据的第一位深处基于残差基本恢复数据。

公开(公告)号：US07031543B2

公开(公告)日：2006-04-18

申请号：US10032464

申请日：2002-01-02

申请人： Hui Cheng ,  Ying-wei Lin ,  Stuart A. Schweid

发明人： Hui Cheng ,  Ying-wei Lin ,  Stuart A. Schweid

IPC分类号： G66K9/40

CPC分类号： G06T5/30 ,  G06T5/005 ,  G06T2207/10008

摘要： An annular window-shaped structuring element is provided for image processing to remove speckles from a scanned image. The window-shaped structuring element is composed of two differently sized squares sharing the same geometric center-point. The pixel to be analyzed with the structuring element is at the center-point. The structuring element is used in a method to remove speckles from binary, grayscale, and/or color images by first eroding the image, detecting speckles relative to other pixels in the image, and removing declared speckles. The method may additionally include a halftoning module to protect halftone images.

公开(公告)号：US06992797B1

公开(公告)日：2006-01-31

申请号：US11110674

申请日：2005-04-21

申请人： Gaurav Sharma ,  Stuart A. Schweid

发明人： Gaurav Sharma ,  Stuart A. Schweid

IPC分类号： G06K15/00

CPC分类号： H04N1/32309 ,  H04N2201/3233 ,  H04N2201/327

摘要： System and methods provide a message, generated based on a message authentication code (MAC), embedded in a look-up table associated with an image. The embedding of the message does not affect the image. The message may be used to authenticate the image.

公开(公告)号：US06525845B1

公开(公告)日：2003-02-25

申请号：US09234107

申请日：1999-01-19

申请人： Gaurav Sharma ,  Stuart A. Schweid ,  Jeng-Nan Shiau

发明人： Gaurav Sharma ,  Stuart A. Schweid ,  Jeng-Nan Shiau

IPC分类号： H04N146

CPC分类号： H04N1/00015 ,  H04N1/00002 ,  H04N1/00037 ,  H04N1/00087 ,  H04N1/2315 ,  H04N1/40062

摘要： Image information is re-calibrated based on the type of marking process and materials by which the image corresponding to the image information was marked on a substrate. The marking process is automatically detected by using, for example, at least one spatial characteristic obtained from the image information.

摘要翻译： 基于标记处理的类型和与图像信息对应的图像在基板上标记的材料重新校准图像信息。 通过使用例如从图像信息获得的至少一个空间特性来自动检测标记处理。

公开(公告)号：US06449389B1

公开(公告)日：2002-09-10

申请号：US09405927

申请日：1999-09-24

申请人： Stuart A. Schweid

发明人： Stuart A. Schweid

IPC分类号： G06K900

CPC分类号： G06T5/20 ,  G06T5/008 ,  G06T7/11 ,  G06T2207/10016 ,  G06T2207/10024 ,  G06T2207/20012

摘要： A method and apparatus for single channel color image segmentation using local context based adaptive weighting is provided. The varying weightings of the projection vector are determined as a function of local input image activity context. A Sobel operator is used to calculate the input image activity. A binary map is created for each color channel and is adapted to store binary markers indicative of local activity levels on a per pixel basis. The binary maps are low pass filtered and then normalized to generate a context based adaptive weighting vector for use in single color segmentation of a multi-channel color image signal.

摘要翻译： 提供了使用基于局部上下文的自适应加权的单通道彩色图像分割的方法和装置。 决定投影向量的不同权重作为本地输入图像活动上下文的函数。 Sobel运算符用于计算输入图像活动。 为每个颜色通道创建二进制图，并且适于在每像素的基础上存储指示局部活动水平的二进制标记。 二进制图被低通滤波，然后被归一化以产生用于多通道彩色图像信号的单色分割的基于上下文的自适应加权矢量。