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：US06842590B2

公开(公告)日：2005-01-11

申请号：US10447561

申请日：2003-05-29

申请人： Edul N. Dalal ,  D. Rene Rasmussen ,  Peter A. Crean

发明人： Edul N. Dalal ,  D. Rene Rasmussen ,  Peter A. Crean

IPC分类号： G03G15/00 ,  G03G13/08 ,  G03G15/08 ,  H04N1/62

CPC分类号： G03G15/5041 ,  G03G2215/00042 ,  G03G2215/0158

摘要： A toner process control process, which includes substantially predicting an effect of reload error on a developed test patch, generating a developed test patch, sensing color density data from the test patch with a sensor, altering the sensed color density data to compensate for the predicted effect of reload error, and adjusting toner output according to the altered sensed color density data.

摘要翻译： 一种调色剂过程控制过程，其包括基本上预测重新加载误差对开发的测试贴片的影响，产生开发的测试贴片，用传感器从测试贴片感测颜色浓度数据，改变感测的颜色浓度数据以补偿预测的 重新加载误差的影响，以及根据改变的感测颜色密度数据调节调色剂输出。

公开(公告)号：US06529616B1

公开(公告)日：2003-03-04

申请号：US09450181

申请日：1999-11-29

申请人： D. Rene Rasmussen ,  Edul N. Dalal ,  Susan June Zoltner

发明人： D. Rene Rasmussen ,  Edul N. Dalal ,  Susan June Zoltner

IPC分类号： G06K900

CPC分类号： H04N1/00015 ,  H04N1/00002 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00058 ,  H04N1/00061 ,  H04N1/00068 ,  H04N1/00079 ,  H04N1/6033

摘要： A special test pattern and image quality analysis system and process for evaluating the test pattern are provided to accurately measure color-color registration in an image output device that prints in CMYK color. The process is robust even when using relatively low-resolution CCD-based scanners and also is unique in that the process automatically factors out errors originating from skew between the detector and the subject of measurement. Further, registration of each of C, M, and Y relative to K are independently determined. The test pattern includes an upper part and a lower part, with both the upper and lower parts having a black K component and the upper part also including color components for C, M and Y. The system and method have potential for being built in to color printers or copiers to allow measurement of color misregistration within the paper path and automatically correct for color registration errors.

摘要翻译： 提供了一种特殊的测试图案和图像质量分析系统以及用于评估测试图案的过程，以准确测量以CMYK颜色打印的图像输出设备中的颜色配准。 即使使用相对较低分辨率的基于CCD的扫描仪，该过程也是稳健的，并且也是唯一的，因为该过程自动地导出来自检测器和测量对象之间的偏差的误差。 此外，分别确定C，M和Y中每一个相对于K的配准。 测试图案包括上部和下部，上部和下部均具有黑色K分量，上部还包括C，M和Y的颜色分量。该系统和方法具有内置于 彩色打印机或复印机，以允许测量纸张路径内的颜色重合失调，并自动校正颜色配准错误。

公开(公告)号：US07320284B2

公开(公告)日：2008-01-22

申请号：US11214912

申请日：2005-08-31

申请人： Edul N. Dalal ,  D. Rene Rasmussen ,  Norman W. Zeck

发明人： Edul N. Dalal ,  D. Rene Rasmussen ,  Norman W. Zeck

IPC分类号： B41C1/12 ,  B41J29/38 ,  B41F31/04

CPC分类号： H04N1/407 ,  G03G15/5016 ,  G03G15/5075 ,  G03G2215/00109

摘要： An ink key simulator for image forming devices may simulate the effect of ink key adjustments in offset presses. The image adjustment may be made in response to activation of a simulated ink key, for example, by adjusting the pixel values of the stored data and/or by adjusting imaging light source intensity within a given region of the image. Using the ink key simulator, adjustments to image quality from printers may be made on-the-fly using an interface which is familiar to the operators of offset presses.

摘要翻译： 用于图像形成装置的墨水键模拟器可以模拟胶版印刷机中的墨键调节的效果。 可以例如通过调整存储的数据的像素值和/或通过调整图像的给定区域内的成像光源强度来响应于模拟墨水键的激活而进行图像调整。 使用墨水键模拟器，可以使用胶版印刷机的操作者熟悉的界面来即时地对打印机的图像质量进行调整。

公开(公告)号：US07013094B2

公开(公告)日：2006-03-14

申请号：US10447562

申请日：2003-05-29

申请人： Edul N. Dalal ,  D. Rene Rasmussen ,  Peter A. Crean

发明人： Edul N. Dalal ,  D. Rene Rasmussen ,  Peter A. Crean

IPC分类号： G03G15/00 ,  G03G15/08

CPC分类号： H04N1/4078

摘要： A method for improving the image quality, which includes substantially predicting an effect of reload error for at least one toner color of a developed image, modulating the color density of at least one pixel of a digital image to compensate for the predicted effect of the reload error, generating the developed image based upon the modulated digital image.

摘要翻译： 一种用于改善图像质量的方法，其包括基本上预测显影图像的至少一种调色剂的重新加载误差的影响，调制数字图像的至少一个像素的色彩浓度以补偿预测的重新加载的影响 错误，基于调制的数字图像生成显影图像。

公开(公告)号：US06816687B1

公开(公告)日：2004-11-09

申请号：US10447424

申请日：2003-05-29

申请人： Edul N. Dalal ,  D. Rene Rasmussen ,  Peter A. Crean

发明人： Edul N. Dalal ,  D. Rene Rasmussen ,  Peter A. Crean

IPC分类号： G03G1500

CPC分类号： G03G15/5041 ,  G03G2215/00037 ,  G03G2215/0158

摘要： A toner control process, which includes substantially determining how reload error will affect a printed image, modulating the color density of a test patch to compensate for reload error prior to printing the test patch, printing the modulated test patch, sensing the digital image, adjusting toner output according to the sensed digital image.

摘要翻译： 一种调色剂控制过程，其包括基本上确定如何重新加载误差将影响印刷图像，调制测试贴片的颜色浓度以补偿打印测试贴片之前的重新加载误差，打印调制测试贴片，感测数字图像，调整 根据感测到的数字图像调色剂输出。

公开(公告)号：US07773774B2

公开(公告)日：2010-08-10

申请号：US10878265

申请日：2004-06-28

申请人： D. Rene Rasmussen ,  Meera Sampath ,  Edul N. Dalal

发明人： D. Rene Rasmussen ,  Meera Sampath ,  Edul N. Dalal

IPC分类号： G06K9/00 ,  H04N1/40

CPC分类号： B41J29/393 ,  H04N1/00002 ,  H04N1/00005 ,  H04N1/00015 ,  H04N1/00018 ,  H04N1/00034 ,  H04N1/00045 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00087

摘要： The present invention is directed to a system and method for test target selection in conjunction with dynamic test pattern generation. In the invention, a test pattern page(s) is composed using an optimal set of test targets, which can be accommodated or adjusted to fit within size constraints of the test pattern. The method of the present invention makes use of layout optimization to ensure that related and optimized test targets are accommodated on a single test pattern. For example, it may be preferable to “squeeze in” a smaller-than-normal uniform area target, rather than not to print it at all during a test.

摘要翻译： 本发明涉及一种结合动态测试图形生成的测试目标选择的系统和方法。 在本发明中，测试图案页面是使用最佳的一组测试目标来构成的，该测试目标可被容纳或调整以适应测试图案的尺寸限制。 本发明的方法利用布局优化来确保相关和优化的测试目标被容纳在单个测试图案上。 例如，优选的是“挤压”小于正常的均匀面积目标，而不是在测试期间根本不打印它。

公开(公告)号：US06912071B1

公开(公告)日：2005-06-28

申请号：US09450185

申请日：1999-11-29

申请人： D. Rene Rasmussen ,  Edul N. Dalal

发明人： D. Rene Rasmussen ,  Edul N. Dalal

IPC分类号： H04N1/00

CPC分类号： H04N1/00002 ,  H04N1/00015 ,  H04N1/00045 ,  H04N1/00055 ,  H04N1/00087

摘要： A virtual tech rep system that can assist in reducing service call visits and customer complaints by readily analyzing image quality of an output image device, such as a copier or printer. The system generates a hardcopy test pattern output from the copier or printer and then scans the test pattern using either the platen of the digital copier or an external scanner to form a digital raster image. Test targets in the digital raster image are then determined using pattern recognition software and image quality analysis is then performed on the test targets based on the sensitivity of the human visual system. It is preferable that the image quality analysis is based on human vision systems rather than a direct comparison between original and printed images as many differences may go unnoticed by a human viewer whereas other types of differences may be readily noticed, even if only slight. The system optionally sends the test results and possibly part or all of the scanned test pattern to a service or diagnostic facility (remote or local) for further analysis when potential defects are identified. This process may be performed at start-up or automatically initiated after a predetermined number of operating cycles or hours of use have been attained.

摘要翻译： 虚拟技术代表系统，可以通过轻松分析输出图像设备（如复印机或打印机）的图像质量来帮助减少服务呼叫访问和客户投诉。 系统生成从复印机或打印机输出的硬拷贝测试图案，然后使用数字复印机的压板或外部扫描仪扫描测试图案，以形成数字光栅图像。 然后使用模式识别软件确定数字光栅图像中的测试目标，然后基于人类视觉系统的灵敏度对测试目标进行图像质量分析。 优选地，图像质量分析基于人类视觉系统，而不是原始和打印图像之间的直接比较，因为许多差异可能不被人类观察者注意到，而其他类型的差异可能容易被注意到，即使只是轻微的。 系统可选地将测试结果以及可能的部分或全部扫描测试图案发送到服务或诊断设备（远程或本地），以便在识别出潜在缺陷时进行进一步分析。 该过程可以在启动时执行或者在已经达到预定数量的操作循环或使用小时之后自动启动。

公开(公告)号：US06606395B1

公开(公告)日：2003-08-12

申请号：US09450182

申请日：1999-11-29

申请人： D. Rene Rasmussen ,  Edul N. Dalal

发明人： D. Rene Rasmussen ,  Edul N. Dalal

IPC分类号： G06K900

CPC分类号： H04N1/00002 ,  B41J29/393 ,  H04N1/00015 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00058 ,  H04N1/00068 ,  H04N2201/3226 ,  H04N2201/3269 ,  H04N2201/3271 ,  H04N2201/3274

摘要： An image quality analysis system is provided that can determine various aspects of image quality easily and with minimal user involvement and minimal user expertise. The system uses a scanner, either a stand-alone or part of a multi-function printer/scanner/copier, to scan a printed test pattern, and then perform a series of analyses on the scanned image using an image quality analysis module that may be built into the image output device being tested, or provided as a stand-alone component that can receive the output from the scanner. There are often a number of different test patterns that would be used depending on which print quality issues are being tested. By encoding each test pattern with a coded identification label, not only can the particular test pattern be identified, but the analysis to be performed can also be determined from the corresponding script when the printed test pattern is scanned and subsequently decoded. Particularly suitable decoders are OCR and barcode readers. Such identification labels and/or scripts can also be used to identify a particular machine that is being tested and other relevant information.

摘要翻译： 提供了一种图像质量分析系统，其可以容易地并且以最小的用户参与和最小的用户专业知识来确定图像质量的各个方面。 系统使用扫描仪，独立的或多功能打印机/扫描仪/复印机的一部分扫描打印的测试图案，然后使用图像质量分析模块对扫描图像执行一系列分析，图像质量分析模块 被内置到被测试的图像输出设备中，或者被提供为可以从扫描仪接收输出的独立组件。 根据哪个打印质量问题正在测试，通常会使用许多不同的测试模式。 通过用编码的识别标签对每个测试图案进行编码，不仅可以识别特定的测试图案，而且当打印的测试图案被扫描并随后解码时，也可以从相应的脚本确定要执行的分析。 特别适合的解码器是OCR和条形码阅读器。 此类识别标签和/或脚本也可用于识别正在测试的特定机器和其他相关信息。

公开(公告)号：US06597473B1

公开(公告)日：2003-07-22

申请号：US09450183

申请日：1999-11-29

申请人： D. Rene Rasmussen ,  Edul N. Dalal

发明人： D. Rene Rasmussen ,  Edul N. Dalal

IPC分类号： G06F1500

CPC分类号： H04N1/00015 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00061 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00079

摘要： An image quality analysis system is provided for image output devices, such as printers and copiers, that overcomes problems with differences in analysis results caused by use of different image input devices. This is achieved by computing a differential transfer function that makes subsequent analysis device independent. Moreover, the analysis is performed on an image that has been blurred to also reflect absolute image quality metrics as seen by a human observer. By determining the resolving characteristics of the input scanner, the scanned image can be processed, with little or no artifacts, to resemble the image as perceived by a human observer, while at the same time eliminating differences that would arise when using a scanner having a different spatial resolving power.

摘要翻译： 为图像输出设备（如打印机和复印机）提供图像质量分析系统，克服了使用不同图像输入设备导致的分析结果差异的问题。 这是通过计算使后续分析设备独立的差分传递函数来实现的。 此外，对已经模糊的图像进行分析，以也反映人类观察者所看到的绝对图像质量度量。 通过确定输入扫描仪的分辨率特性，扫描的图像可以很少或没有瑕疵被处理成类似于人类观察者感知到的图像，同时消除当使用具有 不同的空间分辨力。