公开(公告)号：US20040012817A1

公开(公告)日：2004-01-22

申请号：US10196837

申请日：2002-07-16

Applicant: XEROX CORPORATION

Inventor： Grace T. Brewington ,  Peter A. Crean ,  Lalit K. Mestha ,  Gary W. Skinner

IPC: H04N001/405

CPC classification number: H04N1/40006 ,  H04N1/4076 ,  H04N1/6097

Abstract: In an image rendering system, a method of compensating for system performance changes related to image attributes includes rendering a diagnostic image, sensing at least one image quality from the diagnostic image, updating an image attribute compensation tone reproduction curve based on the sensed image quality and rendering an image based on the updated image attribute compensation tone reproduction curve. For example, image attributes include print media type and a halftone screen selection. An image processing system operative to perform the method of compensation includes a set of image attribute compensation tone reproduction curves. Each curve of the set is associated with a particular combination of image attributes. For example, each curve is associated with a particular media type/halftone screen combination.

Abstract translation: 在图像渲染系统中，补偿与图像属性相关的系统性能改变的方法包括渲染诊断图像，从诊断图像感测至少一个图像质量，基于感测图像质量更新图像属性补偿色调再现曲线，以及 基于更新的图像属性补偿色调再现曲线渲染图像。 例如，图像属性包括打印介质类型和半色调屏幕选择。 可执行补偿方法的图像处理系统包括一组图像属性补偿色调再现曲线。 该集合的每个曲线与图像属性的特定组合相关联。 例如，每个曲线与特定的媒体类型/半色调屏幕组合相关联。

公开(公告)号：US20030063275A1

公开(公告)日：2003-04-03

申请号：US09949475

申请日：2001-09-10

Applicant: Xerox Corporation

Inventor： Fred F. Hubble III ,  Tanya L. Love ,  Lalit K. Mestha ,  Gary W. Skinner ,  Dennis M. Diehl ,  Robert E. Grace ,  Eric Jackson ,  Yao Rong Wang

IPC: G01J003/46

CPC classification number: G01J3/50 ,  G01J3/501 ,  G01J3/52 ,  G01J3/524

Abstract: In a color analysis system in which sheets with multiple different color printed test patches are moved relative to a color analyzing spectrophotometer, and in which fiducial marks are printed adjacent to respective test patches and optically detected by a fiducial mark detector to provide a triggering system for the respective test patch analysis, there is provided automatic diagnostic testing of the spectrophotometer and the fiducial mark triggering system, including automatically generating special test sheets, some of which may include test areas of varying density black.

Abstract translation: 在一种颜色分析系统中，其中具有多个不同颜色的印刷测试片的片相对于颜色分析分光光度计移动，并且其中基准标记被印刷在相应的测试片附近并由基准标记检测器光学检测以提供触发系统 相应的贴片分析，提供了分光光度计和基准标记触发系统的自动诊断测试，包括自动生成特殊测试片，其中一些可能包括不同密度黑色的测试区域。

公开(公告)号：US20020191189A1

公开(公告)日：2002-12-19

申请号：US09994666

申请日：2001-11-28

Applicant: Xerox Corporation

Inventor： Lalit K. Mestha ,  Fred F. Hubble III ,  Tonya L. Love ,  Daniel A. Robbins ,  Gary W. Skinner

IPC: G01J003/46

CPC classification number: G01J3/02 ,  G01J3/0208 ,  G01J3/50 ,  G01J3/501 ,  G01J3/504 ,  G01J3/513 ,  G01J3/52 ,  G01J3/524

Abstract: A method is provided for measuring the color of irregular surface materials, including textiles which may provide dissimilar color measurements from different viewing angles, by illuminating a sampling area of the irregular surface material approximately perpendicularly thereto and measuring the color reflected from that area at a substantial angle, preferably about 45 degrees, with a plurality of separate photodetectors arrayed circularly around the illuminated sampling area of irregular surface material to receive the reflected illumination from substantially opposing directions and at a substantial angle to the illuminated area, for providing a more accurate yet lower cost color measurement system for textiles that can be used easily, quickly, and uncritically in terms of the handling, positioning and orientation of the textile material being tested.

Abstract translation: 提供了一种用于测量不规则表面材料的颜色的方法，所述不规则表面材料包括可以通过照射垂直于其的不规则表面材料的采样区域并且以大体上的方式测量从该区域反射的颜色来从不同的视角提供不同的颜色测量的纺织品 角度，优选约45度，多个单独的光电探测器围绕照射的不规则表面材料的采样区域循环地排列，以从基本上相对的方向接收反射的照明，并以与照明区域相当的角度接收反射照明，以提供更准确但更低的 用于纺织品的成本色彩测量系统，可以在被测试的纺织材料的处理，定位和取向方面容易，快速和不加批判地使用。