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1. 发明申请

WO2013009456A2 PRINTER HAVING AUTOMATIC CROSS-TRACK DENSITY CORRECTION 审中-公开
标题翻译：打印机具有自动交叉密度校正
公开(公告)号：WO2013009456A2
公开(公告)日：2013-01-17
申请号：PCT/US2012/043975
申请日：2012-06-25
申请人： EASTMAN KODAK COMPANY , MUNECHIKA, Stacy, M. , DOBBERTIN, Michael, Thomas , KUO, Chung-hui
发明人： MUNECHIKA, Stacy, M. , DOBBERTIN, Michael, Thomas , KUO, Chung-hui
IPC分类号： G06F15/02
CPC分类号： H04N1/00002 , H04N1/4076
摘要： Printers are provided having a print engine having a print head that forms lines of picture elements on a receiver based upon lines of pixel values and a controller that causes the print engine to print a first print having a plurality of different areas along a cross-track direction with target densities and that receives data from which measured densities for different ones of the plurality of different areas can be determined. The controller determines a line density adjustment function based upon a functional relationship between a cross-track position of different ones of the areas and a difference between the measured density and the target density at the different ones of the areas and subsequently prints a production print according to lines of pixel values for the production print modulated by the line density adjustment function.
摘要翻译：提供了打印机，其具有打印引擎，该打印引擎具有打印头，该打印引擎基于像素值的行在接收器上形成图像元素的行;以及控制器，其使得打印引擎打印具有多个沿着具有目标密度的交叉轨迹方向的不同区域，并且接收可以确定多个不同区域中的不同区域的测量密度的数据。控制器基于不同区域的交叉轨迹位置与不同区域处的测量密度和目标密度之间的差异之间的函数关系来确定线密度调整函数，并且随后根据不同区域到由线密度调整功能调制的生产印刷品的像素值线。

2. 发明申请

WO2011123299A1 CALCULATING SPATIAL NON-UNIFORMITY COMPENSATION DATA FOR HARDCOPY REPRODUCTION APPARATUS 审中-公开
标题翻译：计算生物复制设备的空间非均匀性补偿数据
公开(公告)号：WO2011123299A1
公开(公告)日：2011-10-06
申请号：PCT/US2011/029536
申请日：2011-03-23
申请人： EASTMAN KODAK COMPANY , TAI, Hwai-Tzuu , KUO, Chung-Hui , MUNECHIKA, Stacy, M.
发明人： TAI, Hwai-Tzuu , KUO, Chung-Hui , MUNECHIKA, Stacy, M.
IPC分类号： H04N1/401
CPC分类号： H04N1/4015
摘要： A method of calculating compensation data for compensating for spatial print engine non-uniformity of an image applied by a print engine to a receiver. A test target has two test areas of different output densities, each with a single output pixel level. A relationship between output density and output pixel level for the print engine is determined, and is used to calculate the output pixel level for each test area from the respective output density. The test target is printed, and the reproduced densities of the test areas are measured at a plurality of different locations in each area. A processor is used to calculate the compensation data using the measured densities. The compensation data defines a relationship between an output pixel location on the receiver, an output pixel level, and a compensated pixel level.
摘要翻译：一种计算用于补偿由打印引擎施加到接收器的图像的空间打印引擎不均匀性的补偿数据的方法。测试目标具有不同输出密度的两个测试区域，每个具有单个输出像素级别。确定打印引擎的输出密度和输出像素级之间的关系，并且用于从各自的输出密度计算每个测试区域的输出像素级别。打印测试目标，并且在每个区域中的多个不同位置测量测试区域的再现密度。处理器用于使用测量的密度来计算补偿数据。补偿数据定义了接收器上的输出像素位置，输出像素级和补偿像素级之间的关系。

3. 发明申请

WO2017184377A1 COMPUTATIONAL HALFTONING PROCESS 审中-公开
标题翻译：计算哈希过程
公开(公告)号：WO2017184377A1
公开(公告)日：2017-10-26
申请号：PCT/US2017/026901
申请日：2017-04-11
申请人： EASTMAN KODAK COMPANY
发明人： KUO, Chung-hui , BRENT, David, R. , MUNECHIKA, Stacy, M.
IPC分类号： H04N1/405
摘要： A computational halftoning process determines a halftoned image having halftoned pixel values by processing an array of input pixels. For each input pixel, an array of high-resolution printer coordinates is defined at a higher spatial resolution than the printer resolution, and a coordinate transformation is applied to determine a corresponding array of high-resolution dot coordinates. An array of high-resolution halftoned pixel values is then determined responsive to the code value of the input pixel by addressing a halftone dot function using the array of high-resolution dot coordinates. A halftoned pixel value is then determined by averaging the high-resolution halftoned pixel values.
摘要翻译：计算半色调处理通过处理输入像素的阵列来确定具有半色调像素值的半色调图像。对于每个输入像素，以比打印机分辨率更高的空间分辨率来定义高分辨率打印机坐标阵列，并且应用坐标变换来确定相应的高分辨率点坐标阵列。然后通过使用高分辨率点坐标阵列寻址网点点函数，响应于输入像素的代码值来确定高分辨率半色调像素值的阵列。然后通过平均高分辨率半色调像素值来确定半色调像素值。

4. 发明申请

WO2013095958A1 PRODUCING CORRECTION DATA FOR PRINTER 审中-公开
标题翻译：生成打印机的校正数据
公开(公告)号：WO2013095958A1
公开(公告)日：2013-06-27
申请号：PCT/US2012/068662
申请日：2012-12-10
申请人： EASTMAN KODAK COMPANY
发明人： KUO, Chung-Hui , TAI, Hwai-Tzuu , MUNECHIKA, Stacy, M. , LIVADAS, Jerry, E.
IPC分类号： H04N1/50
CPC分类号： H04N1/506 , G03G15/0194 , G03G15/5062
摘要： Correction data is produced for density errors in prints produced using a printer. While printing a test image, the periods of rotation of one or more rotatable imaging members arranged along a receiver feed path in the printer are measured using respective period sensors. The printed test image is measured along a selected measurement direction and a reproduction error signal representing deviation from aim density is determined. For each period sensor, the autocorrelation of the reproduction error signal for the corresponding period is determined. If the determined autocorrelation exceeds a selected threshold, the reproduction error signal is decomposed at the corresponding period to extract the variation from the measured component. The remaining error signal is separated by frequency terms. The variations from the data at measured periods and the remaining error signal are used to produce a correction signal.
摘要翻译：使用打印机生产的打印件中的密度误差产生校正数据。在打印测试图像时，使用各自的周期传感器测量沿着打印机中的接收器馈送路径布置的一个或多个可旋转成像构件的旋转周期。沿所选的测量方向测量打印的测试图像，并且确定表示偏离目标密度的再现误差信号。对于每个周期传感器，确定相应周期的再现误差信号的自相关。如果所确定的自相关超过选定的阈值，则在相应的周期分解再现误差信号以从测量的分量中提取变化。剩余的误差信号由频率项分隔。使用测量周期的数据和剩余误差信号的变化产生校正信号。

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