公开(公告)号：US06606420B1

公开(公告)日：2003-08-12

申请号：US09425951

申请日：1999-10-25

申请人： Robert P. Loce ,  Clara Cuciurean-Zapan ,  Yeqing Zhang

发明人： Robert P. Loce ,  Clara Cuciurean-Zapan ,  Yeqing Zhang

IPC分类号： G06K940

CPC分类号： G06T5/008 ,  G06T5/30 ,  G06T7/13 ,  G06T7/136 ,  G06T2207/20012 ,  G06T2207/20192 ,  G06T2207/30176

摘要： A method and apparatus for the control of darkness/lightness in a digital image rendered by a printing system. An original image containing antialiased edges is initially thresholded and filtered to determine an edge map. With knowledge of the edge via the edge map, darkness adjustment is applies to the digital image. Gray-edge compaction is applied thereafter to adjust the position of the edge.

摘要翻译： 一种用于控制由打印系统呈现的数字图像中的黑暗度的方法和装置。 首先对含有抗锯齿边缘的原始图像进行阈值处理并过滤以确定边缘图。 通过边缘图的边缘知识，黑暗调整适用于数字图像。 此后施加灰边压实以调整边缘的位置。

公开(公告)号：US20080068660A1

公开(公告)日：2008-03-20

申请号：US11522610

申请日：2006-09-18

申请人： Robert P. Loce ,  Yeqing Zhang ,  Beilei Xu

发明人： Robert P. Loce ,  Yeqing Zhang ,  Beilei Xu

IPC分类号： G06F15/00

CPC分类号： H04N1/40075 ,  H04N1/4092

摘要： Images that include halftone structures are sharpened. A copy of received halftone image data is blurred, thereby reducing a detectability of edges of the halftone structures. Edges remaining in the blurred image data are detected. An edge enhancement image is generated based on the detected edges. The original received halftone image data is combined with the edge enhancement image, thereby generating sharpness enhanced image data having halftone structures. The sharpness enhanced image data having halftone structures can be rendered through a halftone screen that is compatible with a halftone screen that was used to generate the originally received image data. Alternatively, the sharpness enhanced image data having halftone structures is rendered according to error diffusion techniques, such as, rank order error diffusion in order to achieve or maintain dot or halftone structure compaction.

摘要翻译： 包括半色调结构的图像被削尖。 所接收的半色调图像数据的副本被模糊，从而降低了半色调结构的边缘的可检测性。 检测残留在模糊图像数据中的边缘。 基于检测到的边缘生成边缘增强图像。 原始接收的半色调图像数据与边缘增强图像组合，从而产生具有半色调结构的锐度增强的图像数据。 具有半色调结构的清晰度增强的图像数据可以通过与用于生成原始接收的图像数据的半色调屏幕兼容的半色调屏幕来呈现。 或者，具有半色调结构的清晰度增强的图像数据根据误差扩散技术（例如等级误差扩散）来进行，以实现或维持点或半色调结构压缩。

公开(公告)号：US06381035B1

公开(公告)日：2002-04-30

申请号：US09217035

申请日：1998-12-21

申请人： Yeqing Zhang ,  Robert P. Loce ,  Martin E. Banton

发明人： Yeqing Zhang ,  Robert P. Loce ,  Martin E. Banton

IPC分类号： G06K936

CPC分类号： G06T5/30 ,  G06T5/003 ,  G06T2207/20192

摘要： A method to compact a diffuse gray edge that is two pixels wide to a state where it is one pixel wide so that it may be well rendered with anti-alias rendering. The method identifies an observation window within continuous tone image data. The method then operates on the pixels within the observation window by: compacting horizontal features within the observation window; compacting vertical features within the observation window; and compacting corner features within the observation window.

摘要翻译： 一种将两个像素宽的漫射灰色边缘压缩到一个像素宽的状态的方法，以便通过抗混叠渲染可以很好地渲染。 该方法识别连续色调图像数据内的观察窗口。 该方法然后通过以下方式对观察窗内的像素进行操作：压缩观察窗内的水平特征; 压实观察窗内的垂直特征; 并在观察窗内压实角部特征。

公开(公告)号：US08154777B2

公开(公告)日：2012-04-10

申请号：US11200227

申请日：2005-08-09

申请人： Yeqing Zhang ,  Robert P. Loce ,  Raja Bala

发明人： Yeqing Zhang ,  Robert P. Loce ,  Raja Bala

IPC分类号： G03F3/08 ,  G06F15/00

CPC分类号： H04N1/6016

摘要： A color correction method includes for each of a plurality of color separations of a digital image, establishing a tone reproduction curve in the form of a vector. The vector is a function of a plurality of basis vectors. The basis vectors account for colorant interactions between a primary colorant with which the color separation is to be rendered and at least one secondary colorant with which at least a second of the plurality of color separations is to be rendered. The vector includes modified input values corresponding to input values for the color separation which vary, depending on the input values of at least the second color separation. For a pixel of interest in the digital image, a modified input value for the color separation which corresponds to the input value of the given color separation is identified from the vector.

摘要翻译： 颜色校正方法包括数字图像的多个分色中的每一个，建立矢量形式的色调再现曲线。 向量是多个基本向量的函数。 基本向量涉及要与其进行分色的主要着色剂和至少一种次要着色剂之间的着色剂相互作用，至少一个次要着色剂将使多个分色中的至少一个分色进行再现。 矢量包括对应于颜色分离的输入值的修改的输入值，其根据至少第二颜色分离的输入值而变化。 对于数字图像中感兴趣的像素，从向量中识别对应于给定颜色分离的输入值的颜色分离的修改输入值。

公开(公告)号：US20110102852A1

公开(公告)日：2011-05-05

申请号：US12609475

申请日：2009-10-30

申请人： Yeqing Zhang ,  Robert P. Loce

发明人： Yeqing Zhang ,  Robert P. Loce

IPC分类号： G06K9/40 ,  H04N1/409

CPC分类号： H04N1/4092 ,  G06T5/003 ,  G06T2207/20164 ,  G06T2207/20192

摘要： This closure provides image processing methods and apparatus for corner enhancing a digital image for rendering on an image output device. According to an exemplary method, the method determines whether or not image pixels are associated with a corner as a function of the USAN values generated for the image pixels. Subsequently, one or more pixels associated with a corner are modified to render a corner enhanced image.

摘要翻译： 该关闭提供用于转角增强用于在图像输出装置上呈现的数字图像的图像处理方法和装置。 根据示例性方法，该方法根据为图像像素生成的USAN值来确定图像像素是否与角关联。 随后，修改与角部相关联的一个或多个像素以呈现拐角增强图像。

公开(公告)号：US07864364B2

公开(公告)日：2011-01-04

申请号：US11199692

申请日：2005-08-09

申请人： Yeqing Zhang ,  Robert P. Loce ,  Raja Bala

发明人： Yeqing Zhang ,  Robert P. Loce ,  Raja Bala

IPC分类号： G03F3/08 ,  G06F15/00

CPC分类号： H04N1/6027

摘要： A color transformation method which accounts for colorant interactions includes establishing a plurality of tone reproduction curves (TRCs), for one or more of the color separations forming a digital image. Each TRC accounts for colorant interactions between a primary colorant with which the first color separation is to be rendered and at least one secondary colorant with which at least a second of the plurality of color separations is to be rendered. The TRCs include input values and their corresponding modified input values. In a given TRC, the input values of the second and optionally other color separations are fixed. For a pixel of the digital image having a given input values for the first and second color separation one or more of the TRCs are selected which bound the fixed input value for the second color separation and a modified input value is determined therefrom.

摘要翻译： 考虑着色剂相互作用的颜色变换方法包括为形成数字图像的一个或多个分色建立多个色调再现曲线（TRC）。 每个TRC考虑到将要渲染第一颜色分离的主要着色剂与至少一种次要着色剂之间的着色剂相互作用，至少一个次要着色剂将使多个分色中的至少一个分色进行渲染。 TRC包括输入值及其对应的修改输入值。 在给定的TRC中，第二个和任选的其他分色的输入值是固定的。 对于具有用于第一和第二颜色分离的给定输入值的数字图像的像素，选择一个或多个TRC，其限定用于第二颜色分离的固定输入值，并且从其确定修改的输入值。

公开(公告)号：US07719719B2

公开(公告)日：2010-05-18

申请号：US11522610

申请日：2006-09-18

申请人： Robert P. Loce ,  Yeqing Zhang ,  Beilei Xu

发明人： Robert P. Loce ,  Yeqing Zhang ,  Beilei Xu

IPC分类号： H04N1/405 ,  H04N1/409

CPC分类号： H04N1/40075 ,  H04N1/4092

摘要： Images that include halftone structures are sharpened. A copy of received halftone image data is blurred, thereby reducing a detectability of edges of the halftone structures. Edges remaining in the blurred image data are detected. An edge enhancement image is generated based on the detected edges. The original received halftone image data is combined with the edge enhancement image, thereby generating sharpness enhanced image data having halftone structures. The sharpness enhanced image data having halftone structures can be rendered through a halftone screen that is compatible with a halftone screen that was used to generate the originally received image data. Alternatively, the sharpness enhanced image data having halftone structures is rendered according to error diffusion techniques, such as, rank order error diffusion in order to achieve or maintain dot or halftone structure compaction.

摘要翻译： 包括半色调结构的图像被削尖。 所接收的半色调图像数据的副本被模糊，从而降低了半色调结构的边缘的可检测性。 检测残留在模糊图像数据中的边缘。 基于检测到的边缘生成边缘增强图像。 原始接收的半色调图像数据与边缘增强图像组合，从而产生具有半色调结构的锐度增强的图像数据。 具有半色调结构的清晰度增强的图像数据可以通过与用于生成原始接收的图像数据的半色调屏幕兼容的半色调屏幕来呈现。 或者，具有半色调结构的清晰度增强的图像数据根据误差扩散技术（诸如等级误差扩散）来形成，以实现或维持点或半色调结构压缩。

公开(公告)号：US07590282B2

公开(公告)日：2009-09-15

申请号：US11314670

申请日：2005-12-21

申请人： Zhigang Fan ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Robert P. Loce ,  Yeqing Zhang

发明人： Zhigang Fan ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Robert P. Loce ,  Yeqing Zhang

IPC分类号： G06K9/00

CPC分类号： H04N1/4015

摘要： A method and system for selecting an optimal set of S number of calibration patches for an image producing system. The method of selecting the S number of calibration patches includes acquiring a set of K number of basis eigen vectors and model parameters which represent the image producing system having G number of colors and computing the optimal set of S number of colors selected from the set of G number of colors. Each one of the computed set of S number of colors is used for one of the S number of calibration patches.

摘要翻译： 一种用于为图像产生系统选择S个校准块的最佳集合的方法和系统。 选择S个校准贴片的方法包括获取K个基本特征向量和模型参数的集合，所述基本特征向量和模型参数表示具有G个颜色的图像生成系统，并且计算从该组中选择的S个颜色的最佳集合 G色数。 所计算的S个颜色的组合中的每一个用于S个校准块中的一个。

公开(公告)号：US07525704B2

公开(公告)日：2009-04-28

申请号：US11311950

申请日：2005-12-20

申请人： Robert P. Loce ,  Yeqing Zhang ,  Gaurav Sharma ,  Steven J. Harrington ,  Peter A. Crean

发明人： Robert P. Loce ,  Yeqing Zhang ,  Gaurav Sharma ,  Steven J. Harrington ,  Peter A. Crean

IPC分类号： H04N1/46 ,  H04N13/04

CPC分类号： H04N13/302

摘要： A system for enabling depth perception of image content in a rendered composite image, wherein illuminant/colorant depth discrimination encoding provides encoding of first and second source images in a composite image, for the purposes of subsequent illuminant/colorant depth discrimination decoding. Composite image rendering allows for rendering the composite image in a physical form. Illuminant/colorant depth discrimination decoding allows recovery of the first and second source images, thus offering to an observer the perception of spatial disparity between at least one of the recovered source images and some or all of the remaining image content perceived in the rendered composite image.

摘要翻译： 一种用于在渲染的合成图像中实现图像内容的深度感知的系统，其中光源/着色剂深度识别编码提供合成图像中的第一和第二源图像的编码，以用于随后的发光/着色剂深度鉴别解码。 复合图像渲染允许以物理形式呈现合成图像。 照明/着色深度鉴别解码允许恢复第一和第二源图像，从而向观察者提供至少一个恢复的源图像与所渲染的合成图像中感知的剩余图像内容中的一些或全部之间的空间差异的感知 。

公开(公告)号：US06816269B1

公开(公告)日：2004-11-09

申请号：US09666706

申请日：2000-09-21

申请人： Robert P. Loce ,  Yeqing Zhang ,  Martin E. Banton ,  Nancy B. Goodman ,  Susan J. Zoltner ,  Steve P. Hoover

发明人： Robert P. Loce ,  Yeqing Zhang ,  Martin E. Banton ,  Nancy B. Goodman ,  Susan J. Zoltner ,  Steve P. Hoover

IPC分类号： G06F1500

CPC分类号： H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/04787 ,  H04N2201/04794

摘要： A registration system for image data in a binary image path includes a registration parameter source, such as a preprogrammed memory or a dynamic device, which provides registration parameters to correct for registration errors from a predetermined reference likely or predicted to occur during image output. A warping processor is in data communication with the registration parameter source which applies a selected registration parameter to an element of the image data resulting in a warped data element, minimizing the effects of the registration error. The system optionally includes an image reducing device which receives groups of high addressable binary image data and converts them to a single pixel. The pixel is then provided to the warping processor. The warping processor applies the selected registration parameter, either static or dynamically selected, from the registration parameter source to the averaged single pixel producing a warped data element. The warped data element is then optionally provided to a tone reproduction curve calibrator which adjusts for darkness errors induced by the warping or displacement of the warped data element. The calibrated pixel is then re-rendered by a processor which processes the calibrated pixel back into a plurality of print-ready data elements. The processor estimates quantization errors induced by the warping of the pixel positioning and disperses that error to following pixels. The print-ready data elements are provided to an image output terminal which produces a physical representation of the original binary image.