公开(公告)号：US5892891A

公开(公告)日：1999-04-06

申请号：US753131

申请日：1996-11-20

申请人： Edul N. Dalal ,  Thyagarajan Balasubramanian ,  R. Victor Klassen

发明人： Edul N. Dalal ,  Thyagarajan Balasubramanian ,  R. Victor Klassen

IPC分类号： H04N1/54 ,  H04N1/50

CPC分类号： H04N1/54

摘要： In a "hi-fi" color printing system, wherein colorants of hi-fi colors beyond the regular CMYK primary colorants are available, a main gamut obtainable with the CMYK colorants only is mutually exclusive with at least one extended gamut in which a hi-fi colorant is used and a complementary one of the CMY colorants is excluded. Because the main and extended gamuts are mutually exclusive, no more than four colorants are used in any part of the image, and no more than four halftone screens need be used to obtain any desired color.

摘要翻译： 在“Hi-Fi”彩色打印系统中，其中超过常规CMYK原色剂的高保真色彩的着色剂是可获得的，用CMYK着色剂可获得的主色域仅与至少一个扩展色域相互排斥，其中hi- 使用纤维素着色剂，并排除CMY着色剂中的一种。 因为主色域和扩展色域是相互排斥的，所以在图像的任何部分都不能使用四种以上的着色剂，并且不需要使用不超过四个半色调屏幕来获得所需的颜色。

公开(公告)号：US07542059B2

公开(公告)日：2009-06-02

申请号：US11378046

申请日：2006-03-17

申请人： Charles D. Rizzolo ,  Edul N. Dalal ,  Dusan G. Lysy ,  Dale R. Mashtare ,  R. Victor Klassen ,  Wencheng Wu ,  Nancy B. Goodman

发明人： Charles D. Rizzolo ,  Edul N. Dalal ,  Dusan G. Lysy ,  Dale R. Mashtare ,  R. Victor Klassen ,  Wencheng Wu ,  Nancy B. Goodman

IPC分类号： G03G15/01 ,  B41J29/38 ,  G03B27/00 ,  G06F3/12

CPC分类号： G03G15/238 ,  G03G2215/0119

摘要： At least sequential current and subsequent sheets of a print job are received in a document processing system. Each sheet includes a front image and a back image. The received sheets are scheduled to be printed with at least one of a first and a second sequence by at least one of a first and a second marking engine based on a comparison of the image content in corresponding selected portions of each front and back image.

摘要翻译： 在文档处理系统中接收打印作业的至少连续的当前和后续页。 每张纸包括前图像和后图像。 基于每个前后图像的对应选择部分中的图像内容的比较，所接收的纸张被安排为由第一和第二标记引擎中的至少一个打印的第一和第二序列中的至少一个。

公开(公告)号：US06654143B1

公开(公告)日：2003-11-25

申请号：US09429444

申请日：1999-10-28

申请人： Edul N. Dalal ,  Thyagarajan Balasubramanian ,  D. Rene Rasmussen ,  Gaurav Sharma ,  Mark Q. Shaw ,  Michael E. Farrell ,  David C. Robinson

发明人： Edul N. Dalal ,  Thyagarajan Balasubramanian ,  D. Rene Rasmussen ,  Gaurav Sharma ,  Mark Q. Shaw ,  Michael E. Farrell ,  David C. Robinson

IPC分类号： G06F1500

CPC分类号： H04N1/6097 ,  H04N1/603

摘要： A method of adjusting an image production system to account for a variable property of a desired output medium includes storing a reference characterization of at least one measured value associated with a reference output medium. An output value, adjusted for the variable property of the desired output medium, is determined based on data including the reference characterization of the reference output medium, for example stored in color lookup tables, color rendering dictionaries, or the like. Based on the adjusted output value determined, the desired output medium is then printed or otherwise marked using the output value.

摘要翻译： 调整图像生成系统以考虑期望输出介质的可变属性的方法包括存储与参考输出介质相关联的至少一个测量值的参考表征。 基于包括参考输出介质的参考表征的数据，例如存储在颜色查找表，显色字典等中的数据来确定针对所需输出介质的可变属性调整的输出值。 基于所确定的调整后的输出值，然后使用输出值打印所需输出介质或以其他方式进行标记。

公开(公告)号：US20140071281A1

公开(公告)日：2014-03-13

申请号：US13610907

申请日：2012-09-12

申请人： Wencheng Wu ,  Edul N. Dalal

发明人： Wencheng Wu ,  Edul N. Dalal

IPC分类号： H04N17/00

CPC分类号： H04N17/002 ,  G08G1/04

摘要： A method for determining a response to misalignment of a camera monitoring a desired area includes acquiring temporal related frames from the camera including a reference frame. A pixel location is determined of a reference object from the frames. Using the pixel location of the reference object, a displacement of the camera between a current frame and the reference frame is determined. For the displacement exceeding a first threshold, a new displacement of the camera is measured by introducing at least one additional object to a camera field of view and comparing the new displacement to a second threshold. For the new displacement not exceeding the second threshold, the camera is recalibrated using a determined pixel location and a physical location of the at least one additional object. For the new displacement exceeding the second threshold, notification is provided of a misalignment to an associated user device.

摘要翻译： 用于确定对监视所需区域的相机的未对准的响应的方法包括从摄像机获取包括参考帧的时间相关帧。 从帧中确定参考对象的像素位置。 使用参考对象的像素位置，确定相机在当前帧与参考帧之间的位移。 对于超过第一阈值的位移，通过将至少一个附加对象引入照相机视野并将新位移与第二阈值进行比较来测量照相机的新位移。 对于不超过第二阈值的新位移，使用确定的像素位置和至少一个附加对象的物理位置来重新校准照相机。 对于超过第二阈值的新位移，向相关联的用户设备通知未对准。

公开(公告)号：US08670153B2

公开(公告)日：2014-03-11

申请号：US12942414

申请日：2010-11-09

申请人： Alvaro Enrique Gil ,  Lalit Keshav Mestha ,  Wencheng Wu ,  Edul N. Dalal

发明人： Alvaro Enrique Gil ,  Lalit Keshav Mestha ,  Wencheng Wu ,  Edul N. Dalal

IPC分类号： H04N1/60 ,  G06K9/00

CPC分类号： H04N1/6058

摘要： What is disclosed is a novel system and method for mapping out-of-gamut colors to a device's gamut to improve image quality in a color document reproduction device involves performing the following. First, an out-of-gamut color xi, which is intended to be mapped to a boundary surface of a color gamut of a color marking device, is selected. A gamut mapping function is also selected. The selected gamut mapping function is intended to be applied to the selected out-of-gamut color point. At least one performance attribute is then selected for the color marking device and a multi-objective cumulative cost JT is determined based upon a combination of costs Jgm and Js. The multi-objective cumulative cost JT is then iteratively driven to a minimum. Once the minimum has been determined, a gamut mapping of the selected out-of-gamut color can then be performed using the minimized multi-objective cumulative cost. Various embodiments are disclosed.

摘要翻译： 公开的是用于将色域外的色彩映射到设备的色域以改善彩色文档再现设备中的图像质量的新颖系统和方法，包括执行以下操作。 首先，选择旨在映射到彩色标记装置的色域的边界表面的色域外的色彩xi。 还选择色域映射功能。 所选择的色域映射功能旨在应用于所选择的色域外色点。 然后为颜色标记装置选择至少一个性能属性，并且基于成本Jgm和Js的组合来确定多目标累积成本JT。 然后将多目标累积成本JT迭代地驱动到最小。 一旦确定了最小值，则可以使用最小化的多目标累积成本来执行所选出的色域外颜色的色域映射。 公开了各种实施例。

公开(公告)号：US08571268B2

公开(公告)日：2013-10-29

申请号：US12727724

申请日：2010-03-19

申请人： Wencheng Wu ,  Edul N. Dalal

发明人： Wencheng Wu ,  Edul N. Dalal

IPC分类号： G06K9/00

CPC分类号： G06T7/0006 ,  G06T2207/10024 ,  G06T2207/30144

摘要： What is disclosed is a novel system and method for determining printer performance in terms of image quality (IQ) on-paper using on-belt measurements. First, image noise is measured via sensing of single-separation device-dependent colors on an imaging member for a target marking device. Such single-separation device-dependent colors, in one embodiment, comprise cyan, magenta, yellow and black. A predictive correlation model is used to project the image noise of the single-separation device-dependent colors when printed on a substrate. A noise prediction model is used to estimate image noise performance values of multi-separation device-dependent colors on a substrate from the projected single-separation device-dependent colors on a substrate. In one embodiment, the predictive correlation model comprises a separation-dependent polynomial equation. The estimated image noise performance values on a substrate are used to determine image quality metric of the target marking device.

摘要翻译： 所公开的是使用带上测量在纸上使用图像质量（IQ）来确定打印机性能的新型系统和方法。 首先，通过感测目标标记装置的成像构件上的单分离装置相关颜色来测量图像噪声。 在一个实施例中，这种单分离装置相关的颜色包括青色，品红色，黄色和黑色。 使用预测相关模型来投影印刷在基板上的单分离装置相关颜色的图像噪声。 噪声预测模型用于从基底上投影的单分离装置依赖颜色估计基板上多分离装置相关颜色的图像噪声性能值。 在一个实施例中，预测相关模型包括分离依赖多项式方程。 使用基板上的估计图像噪声性能值来确定目标标记装置的图像质量度量。

公开(公告)号：US08531734B2

公开(公告)日：2013-09-10

申请号：US13023202

申请日：2011-02-08

申请人： Lalit Keshav Mestha ,  Edul N. Dalal ,  Wencheng Wu

发明人： Lalit Keshav Mestha ,  Edul N. Dalal ,  Wencheng Wu

IPC分类号： G06T5/00

CPC分类号： H04N1/6033

摘要： What is disclosed is a system and method for improving image quality of a color of interest using a cluster model in a color printing system involving the following. First, one or more image quality attributes are selected for a target color marking device. A cluster model is received which comprises a plurality of clusters with each cluster having an associated transform. The cluster model is used to estimate an image quality parameter. The image quality parameter is used to select colorant sets and thereby to improve the image quality in the marking device. Various embodiments of the use of cluster models are disclosed.

摘要翻译： 公开的是一种用于在涉及以下的彩色打印系统中使用聚类模型来改善感兴趣的颜色的图像质量的系统和方法。 首先，为目标颜色标记装置选择一个或多个图像质量属性。 接收到包括多个聚类的聚类模型，每个聚类具有相关联的变换。 聚类模型用于估计图像质量参数。 图像质量参数用于选择着色剂组，从而提高标记装置中的图像质量。 公开了使用群集模型的各种实施例。

公开(公告)号：US08493621B2

公开(公告)日：2013-07-23

申请号：US12462527

申请日：2009-08-05

申请人： Wencheng Wu ,  Edul N. Dalal

发明人： Wencheng Wu ,  Edul N. Dalal

IPC分类号： H04N1/40

CPC分类号： H04N1/6033

摘要： A method for optimally using color patch codes or color barcodes for transmitting machine-readable information, via device characterization, is disclosed to comprise characterizing a printing device and optionally a sensing device for identifying a number of recognizably spaced printer output colors; deriving a code book, by relating the printer output colors and their corresponding input values to information elements; and using the code book for encoding and decoding the information to be transmitted. The recognizably spaced printer output colors are in terms of a color space relevant to a color patch code or color barcode sensing device, and are related to the corresponding marking device input values.

摘要翻译： 公开了一种用于通过设备表征来最佳地使用色块代码或颜色条形码来发送机器可读信息的方法，其包括表征打印装置和可选地用于识别多个可识别间隔的打印机输出颜色的感测装置; 通过将打印机输出颜色及其相应的输入值与信息元素相关联来导出代码簿; 并使用码本对要发送的信息进行编码和解码。 可识别间隔的打印机输出颜色是与色块代码或颜色条形码检测装置相关的颜色空间，并且与相应的标记装置输入值有关。

公开(公告)号：US08477372B2

公开(公告)日：2013-07-02

申请号：US12781988

申请日：2010-05-18

申请人： Wencheng Wu ,  Edul N. Dalal

发明人： Wencheng Wu ,  Edul N. Dalal

IPC分类号： H04N1/60

CPC分类号： H04N1/603 ,  H04N1/40006

摘要： What is disclosed is a novel system and method for determining a printer metric in terms of image quality (IQ) over a large complex set of conditions based upon measurements taken over a small simple set of conditions while compensating for printer drift. The present system and method effectively utilizes a predictive model that predicts noise measurements of multi-separations from those of single-separation colors and/or a subset of the multi-separations. Because a model is used to comprehend the metric over the entire gamut, the number of patches is reduced. This reduction enables the method to be used within a machine to dynamically characterize the device's image quality metric. Various embodiments have been disclosed.

摘要翻译： 所公开的是一种新颖的系统和方法，用于在补偿打印机漂移的基础上，基于在一小组简单的条件下进行的测量，在大的复杂条件集上根据图像质量（IQ）来确定打印机度量。 本系统和方法有效地利用预测多分离与单分离颜色和/或多分离子集的噪声测量的预测模型。 由于使用模型来了解整个色域中的度量，因此减少了补丁的数量。 这种减少使得可以在机器内使用该方法来动态地表征设备的图像质量度量。 已经公开了各种实施例。

公开(公告)号：US08363280B2

公开(公告)日：2013-01-29

申请号：US12536046

申请日：2009-08-05

申请人： Edul N. Dalal ,  Robert P. Loce

发明人： Edul N. Dalal ,  Robert P. Loce

IPC分类号： H04N1/405

CPC分类号： H04N1/54 ,  H04N1/4051

摘要： Systems and methods of halftoning an image for extended-colorant printing image spot colors are provided which perform a quality ranking of a plurality of periodic halftone screens to be used in halftoning the image and an objectionability ranking of the colorants used to produce the one or more image spot colors. Halftone screen-to-colorant assignments are then made using a ranked ordered pairing of the ranked screens and ranked colorants. The image is halftoned using these assignments and the results can be printed or saved for future printing. Pixel tags can be used to identify the ranked ordered halftone screen-to-colorant assignments.

摘要翻译： 提供了用于扩展着色剂打印图像专色的图像半色调的系统和方法，其执行要在半色调图像中使用的多个周期性半色调画面的质量等级，以及用于产生一个或多个 图像专色。 然后使用排序屏幕和排名着色剂的排序顺序配对进行半色调屏幕到着色剂分配。 使用这些作业对图像进行半色调处理，结果可打印或保存以备将来打印。 像素标签可用于识别排序的排序半色调屏幕到着色剂分配。