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    • 1. 发明授权
    • Streak compensation using model based projections for run time updates
    • 使用基于模型的运行时更新预测的条纹补偿
    • US08400683B2
    • 2013-03-19
    • US12781085
    • 2010-05-17
    • Peter PaulClaude S. FillionStuart A. SchweidDouglas R. TaylorBrian R. Conrow
    • Peter PaulClaude S. FillionStuart A. SchweidDouglas R. TaylorBrian R. Conrow
    • H04N1/409
    • H04N1/506
    • Streak compensation in a digital printer is provided utilizing a spatially varying Printer Model and Run Time updates to generate Spatially Varying Tone Reproduction Curves (STRCs) which are used as actuators to compensate for streaks during run time. A full width array sensor is used to measure streak profiles and the STRCs are used as actuators to compensate for streaks. Streak profile measurements taken at a limited number of area coverage levels combined with a Printer Streaks Basis Function Model are used to estimate and project the streak behavior at all area coverage levels and at all inboard-to-outboard spatial locations. The projection is then used in a pixel-wise error feedback control scheme to drive each profile to a desired shape, thereby compensating for streaks.
    • 使用空间变化的打印机型号和运行时间更新来提供数字打印机中的条纹补偿,以生成空间变化色调再现曲线(STRC),这些曲线用作执行器来补偿运行时间内的条纹。 全宽阵列传感器用于测量条纹轮廓,并且STRC用作致动器来补偿条纹。 在有限数量的区域覆盖水平和打印机条纹基础函数模型的条件下进行条纹分布测量用于估计和计算所有区域覆盖水平和所有内到外空间位置的条纹行为。 然后将投影用于像素方向的误差反馈控制方案,以将每个轮廓驱动到期望的形状,从而补偿条纹。
    • 4. 发明申请
    • METHOD AND SYSTEM FOR BILLING BASED ON COLOR COMPONENT HISTOGRAMS
    • 基于颜色分量组织的计费方法和系统
    • US20130097099A1
    • 2013-04-18
    • US13275934
    • 2011-10-18
    • Raymond J. CLARKStuart A. SchweidRoger Lee Triplett
    • Raymond J. CLARKStuart A. SchweidRoger Lee Triplett
    • G06Q30/02
    • G06Q30/04G06Q30/0283
    • Disclosed is a processor-implemented method for processing images. The processor receives image data of a color space defined by input provided to a system by a user, determines at least one color attribute of the pixels in the received image correlating to at least perceptual image characteristics, determines statistics using the attribute(s), and analyzes the statistics to classify the image into a category. Based on at least the category, a billing structure for the image is determined. For example, chroma and/or hue of pixels can be used to create histograms, whose data is used to determine a degree of color and/or content of an image, which is categorized. Color space components of received pixels can also be statistically analyzed. Such determinations consider billing based on human perception of use of color. Billing for color images in this manner satisfies the user and increases use of color output (e.g., printing).
    • 公开了一种用于处理图像的处理器实现的方法。 处理器接收由用户提供给系统的输入定义的颜色空间的图像数据,确定与至少感知图像特征相关的接收图像中的像素的至少一个颜色属性,使用属性确定统计, 并分析统计信息,将图像分类为一个类别。 基于至少该类别,确定图像的记帐结构。 例如,可以使用像素的色度和/或色调来创建直方图,其数据用于确定被分类的图像的颜色和/或内容的程度。 也可以统计分析接收像素的颜色空间分量。 这种确定考虑了基于人类对颜色使用的看法的计费。 以这种方式对彩色图像进行计费满足用户并增加使用颜色输出(例如打印)。
    • 6. 发明授权
    • Systems and methods for streak detection in image array scanning using overdetermined scanners and column filtering
    • 使用超定义扫描仪和列过滤的图像阵列扫描中条纹检测的系统和方法
    • US07359093B2
    • 2008-04-15
    • US10845164
    • 2004-05-14
    • Stuart A. SchweidShen-ge WangPaul A. Hosier
    • Stuart A. SchweidShen-ge WangPaul A. Hosier
    • H04N1/409
    • H04N1/4097H04N1/00092H04N1/1215H04N1/193
    • A streak detection method and system in a fixed imaging array digital scanning system obtains image data from each of the plurality of rows in the at least one full color spectrum channel set of rows of positionally discrete sensors and integrates this data to produce an estimate of image data recorded by at least one clear channel row of positionally discrete sensors. A clear channel error signal is generated by the comparison to alert the operator to the presence of non-image data. The clear channel error signal may be refined to through a low pass column filtering process in order to filter out potentially erroneous clear channel error resulting from thermal, mechanical or other noise sources unrelated to image scanning. Stationary obstructions in the field of view of the imaging array, or defects in one or more sensors in the imaging array, are detected through this comparison which would otherwise appear repeatedly reproduced as streaks or lines in the reproduced output image.
    • 固定成像阵列数字扫描系统中的条纹检测方法和系统从至少一个位置离散传感器行的全色谱通道组中的多行中的每一行获得图像数据,并对该数据进行积分以产生图像估计 通过位置离散传感器的至少一个清晰通道行记录的数据。 通过比较产生清晰的通道错误信号,以向操作员警告非图像数据的存在。 可以通过低通列滤波处理来将清除信道误差信号细化为过滤掉与图像扫描无关的热,机械或其它噪声源引起的潜在错误的清除信道误差。 通过该比较来检测成像阵列的视场中的固定障碍物或成像阵列中的一个或多个传感器中的缺陷,否则该比较将被再现为再现的输出图像中的条纹或线条。
    • 7. 发明授权
    • Method and apparatus for implementing integrated cavity effect correction in scanners
    • 在扫描仪中实现集成腔效应校正的方法和装置
    • US06631215B1
    • 2003-10-07
    • US09448009
    • 1999-11-23
    • Jeng-nan ShiauRaymond J. ClarkStuart A. SchweidTerri A. Clingerman
    • Jeng-nan ShiauRaymond J. ClarkStuart A. SchweidTerri A. Clingerman
    • G06K940
    • G06T5/20
    • A method and apparatus are provided for determining a weighted average measured reflectance parameter Rm for pixels in an image for use in integrated cavity effect correction of the image. For each pixel of interest Pi,j in the image, an approximate spatial dependent average Ai,j, Bi,j of video values in a region of W pixels by H scan lines surrounding the pixel of interest Pi,j is computed by convolving video values Vi,j of the image in the region with a uniform filter. For each pixel of interest Pi,j a result of the convolving step is used as the reflectance parameter Rm. The apparatus includes a video buffer for storing the pixels of the original scanned image, and first and second stage average buffers for storing the computed approximate spatial dependent averages Ai,j, Bi,j. First and second stage processing circuits respectively generate the first and second stage average values Ai,j, Bi,j by convolving the video values of the image in a preselected region with a uniform filter.
    • 提供一种方法和装置,用于确定用于图像的集成腔效应校正的图像中的像素的加权平均测量反射率参数Rm。 对于图像中的每个感兴趣像素P i,j,通过卷积视频来计算在围绕像素p,j的W像素的H像素的区域中的视频值的近似空间依赖平均值Ai,j,Bi,j 在具有均匀滤波器的区域中的图像的值Vi,j。 对于感兴趣的每个像素Pi,j,使用卷积步骤的结果作为反射参数Rm。 该装置包括用于存储原始扫描图像的像素的视频缓冲器,以及用于存储所计算的近似空间相关平均值Ai,j,Bi,j的第一和第二平均缓冲器。 第一和第二级处理电路通过使用均匀的滤波器卷积预选区域中的图像的视频值,分别产生第一和第二平均值Ai,j,Bi,j。