公开(公告)号：US09019561B1

公开(公告)日：2015-04-28

申请号：US14299865

申请日：2014-06-09

Applicant: Xerox Corporation

Inventor： James M. Sanchez ,  Guo-Yau Lin

IPC: H04N1/60 ,  G06K15/02

CPC classification number: G06K15/027 ,  G06K15/1881 ,  H04N1/52 ,  H04N1/6027 ,  H04N1/6036

Abstract: Methods and devices calibrate a printing device to develop a single calibration tone reproduction curve associated with a first halftone state for the printing device, and calculate a primary color profile for the first halftone state and secondary color profiles for the secondary halftone states available with the printing device based on a previously calculated relationship between the first halftone state and the secondary halftone states. Subsequently, these methods and devices receive a print job and such methods identify the secondary halftone state of the print job. With this, the methods and devices can identify a secondary color profile from the secondary color profiles that corresponds to the secondary halftone state and raster image process the print job using the secondary color profile to produce rasterized output. Then, these methods and devices print the rasterized output on print media using a print engine of the printing device.

Abstract translation: 方法和设备校准打印设备以开发与打印设备的第一半色调状态相关联的单个校准色调再现曲线，并且计算用于第一半色调状态的主色调配置文件和用于打印可用的辅助半色调状态的次色调配置文件 基于先前计算的第一半色调状态和次要半色调状态之间的关系的装置。 随后，这些方法和设备接收打印作业，并且这种方法识别打印作业的次要半色调状态。 由此，方法和装置可以从对应于次级半色调状态的次要颜色配置文件中识别辅助颜色配置文件，并且使用辅助颜色配置文件对打印作业进行光栅图像处理以产生光栅化输出。 然后，这些方法和设备使用打印设备的打印引擎在打印介质上打印光栅化输出。

公开(公告)号：US08917420B2

公开(公告)日：2014-12-23

申请号：US13667994

申请日：2012-11-02

Applicant: Xerox Corporation

Inventor： Alvaro E. Gil ,  Himanshu J. Madhu ,  Lina Fu ,  James M. Sanchez ,  Connie F. Purdum

IPC: H04N1/60 ,  G03F3/08 ,  G06K9/00

CPC classification number: H04N1/56 ,  H04N1/603

Abstract: A method for processing black point compensation parameters for a color image to be printed so as to enhance image quality of the color image is provided. The method includes converting a received color image to a gray scale image; determining, using the received color image and the gray scale image, a performance attribute to estimate the effect of the black point compensation parameters on the image quality of the received color image, respectively; deriving a model to estimate relationships between the black point compensation parameters and the determined performance attribute; maximizing the performance attribute of the derived model so as to process the black point compensation parameters for the color image; and using the processed black point compensation parameters to construct output device profiles.

Abstract translation: 提供了一种用于处理要打印的彩色图像的黑点补偿参数以提高彩色图像的图像质量的方法。 该方法包括将接收的彩色图像转换为灰度图像; 使用所接收的彩色图像和灰度图像来分别确定黑点补偿参数对所接收的彩色图像的图像质量的影响的性能属性; 得出一个模型来估计黑点补偿参数与确定的性能属性之间的关系; 最大化导出模型的性能属性，以处理彩色图像的黑点补偿参数; 并使用经处理的黑点补偿参数构建输出设备配置文件。

公开(公告)号：US20140126002A1

公开(公告)日：2014-05-08

申请号：US13667994

申请日：2012-11-02

Applicant: XEROX CORPORATION

Inventor： Alvaro E. Gil ,  Himanshu J. Madhu ,  Lina Fu ,  James M. Sanchez ,  Connie F. Purdum

IPC: G06K15/02

CPC classification number: H04N1/56 ,  H04N1/603

Abstract: A method for processing black point compensation parameters for a color image to be printed so as to enhance image quality of the color image is provided. The method includes converting a received color image to a gray scale image; determining, using the received color image and the gray scale image, a performance attribute to estimate the effect of the black point compensation parameters on the image quality of the received color image, respectively; deriving a model to estimate relationships between the black point compensation parameters and the determined performance attribute; maximizing the performance attribute of the derived model so as to process the black point compensation parameters for the color image; and using the processed black point compensation parameters to construct output device profiles.

Abstract translation: 提供了一种用于处理要打印的彩色图像的黑点补偿参数以提高彩色图像的图像质量的方法。 该方法包括将接收的彩色图像转换为灰度图像; 使用所接收的彩色图像和灰度图像来分别确定黑点补偿参数对所接收的彩色图像的图像质量的影响的性能属性; 得出一个模型来估计黑点补偿参数与确定的性能属性之间的关系; 最大化导出模型的性能属性，以处理彩色图像的黑点补偿参数; 并使用经处理的黑点补偿参数构建输出设备配置文件。