会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 51. 发明授权
    • Error diffusion method
    • 误差扩散法
    • US5581371A
    • 1996-12-03
    • US399678
    • 1995-03-07
    • Kevin E. SpauldingDouglas W. Couwenhoven
    • Kevin E. SpauldingDouglas W. Couwenhoven
    • H04N1/405
    • H04N1/4053
    • An improved error diffusion method for producing an output image from an input image having a set of digitized continuous-tone pixels is disclosed. The method includes computing a visually perceived input value for a digitized continuous-tone input pixel and computing a visually perceived output value for each of the possible output levels. The method further includes selecting the output level in response to the visually perceived input values and the visually perceived output value for each of the possible output levels according to an error criterion; determining an error signal between the visually perceived input value and the visually perceived output value for the selected output level; and weighting the error signal and adjusting the computed visually perceived input values for nearby pixels which have not been processed.
    • 公开了一种用于从具有一组数字化连续色调像素的输入图像产生输出图像的改进的误差扩散方法。 该方法包括计算用于数字化连续色调输入像素的视觉感知输入值,并计算每个可能输出电平的视觉感知输出值。 该方法还包括响应于视觉感知的输入值和根据错误标准的每个可能输出电平的视觉感知输出值来选择输出电平; 确定视觉感知的输入值与所选输出电平的视觉感知输出值之间的误差信号; 并对误差信号进行加权并调整对于尚未处理的附近像素的计算出的视觉感知输入值。
    • 55. 发明授权
    • Digital printing using similar colorants
    • 使用类似着色剂的数字印刷
    • US08085436B2
    • 2011-12-27
    • US12330552
    • 2008-12-09
    • Douglas W. CouwenhovenKevin E. Spaulding
    • Douglas W. CouwenhovenKevin E. Spaulding
    • H04N1/60H04N1/40H04N1/46G03F3/08G06K9/00
    • H04N1/60
    • A method for printing an input digital image using a digital printer having a set of colorants with substantially the same color but different densities, including a sequence of node points where each of the two or more colorants are either at their maximum or minimum values, setting colorant concentrations such that the color channel output responses corresponding to the sequence of node points are substantially equally spaced in a visually uniform color space; forming colorant control look-up tables to provide smooth transitions in the color channel output response between the sequence of node points; addressing the colorant control look-up tables with the printer code value for each pixel of the input digital image to determine the colorant control signals for each of the two or more colorants; and controlling the digital printer using the colorant control signals to produce a print of the input digital image.
    • 一种使用具有基本上相同颜色但不同密度的一组着色剂的数字打印机打印输入数字图像的方法,包括其中两个或更多个着色剂中的每一个处于其最大值或最小值的节点点序列,设置 着色剂浓度使得对应于节点点序列的颜色通道输出响应在视觉均匀的颜色空间中基本相等间隔; 形成着色剂控制查找表,以在节点间序列中的颜色通道输出响应中提供平滑过渡; 使用输入数字图像的每个像素的打印机代码值寻址着色剂控制查找表,以确定两种或更多种着色剂中的每一种的着色剂控制信号; 以及使用着色剂控制信号来控制数字打印机以产生输入数字图像的打印。
    • 60. 发明申请
    • ADAPTIVE COLOR TRANSFORM TO CONTROL COLOR INCONSTANCY
    • 自适应颜色变换控制颜色不雅
    • US20100103438A1
    • 2010-04-29
    • US12257417
    • 2008-10-24
    • Christopher R. HaufKevin E. SpauldingDouglas W. Couwenhoven
    • Christopher R. HaufKevin E. SpauldingDouglas W. Couwenhoven
    • H04N1/60
    • H04N1/60H04N1/6083H04N1/6088
    • A method for selecting the level of color inconstancy of an output image produced on a digital color printer having a neutral ink and a plurality of color inks is disclosed. The method includes analyzing the distribution of input colors present in the input digital image to determine a color distribution metric related to the importance of producing output images having a reduced color inconstancy when the output image is viewed under a variety of image illumination spectra; selecting a color transform from a set of available color transforms designed to produce output images having different color inconstancy characteristics in response to the color distribution metric; processing the input digital image using the selected color transform to produce a transformed image having a selected level of color inconstancy; and printing the transformed image on the digital color printer to produce an output image having the selected level of color inconstancy.
    • 公开了一种用于选择在具有中性墨水和多种颜色墨水的数字彩色打印机上产生的输出图像的颜色不均匀度的方法。 该方法包括分析输入数字图像中存在的输入颜色的分布,以确定当在各种图像照明光谱下观看输出图像时,与产生具有减小的颜色不一致的输出图像的重要性相关的颜色分布度量; 从一组可用的颜色变换中选择颜色变换,所述颜色变换被设计成响应颜色分布度量产生具有不同颜色不变特征的输出图像; 使用所选择的颜色变换来处理所述输入数字图像以产生具有所选择的颜色不均匀水平的变换图像; 并且在数字彩色打印机上打印经变换的图像,以产生具有所选择的颜色不均匀水平的输出图像。