公开(公告)号：US20080013848A1

公开(公告)日：2008-01-17

申请号：US11487206

申请日：2006-07-14

Applicant: Wencheng Wu ,  R. Victor Klassen

Inventor： Wencheng Wu ,  R. Victor Klassen

IPC: G06K9/00 ,  G06K9/40

CPC classification number: H04N1/00002 ,  H04N1/00005 ,  H04N1/00015 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00087

Abstract: A method of detecting image quality defects includes providing an electronic image including electronic image data, rendering an image based on the electronic image data, capturing the rendered image, the captured image including captured image data, deriving one-dimensional profiles from the captured image data, each of the captured one-dimensional profiles being derived from a set of image data in the same direction, optionally, deriving reference one-dimensional profiles from the electronic image data and generating a difference profile from the reference and captured one-dimensional profiles, and evaluating at least one of the captured one-dimensional profiles and reference one-dimensional profiles for image quality defects.

Abstract translation: 一种检测图像质量缺陷的方法包括提供包括电子图像数据的电子图像，基于电子图像数据绘制图像，捕获渲染图像，捕获的图像，包括捕获的图像数据，从捕获的图像数据中导出一维轮廓 捕获的一维轮廓中的每一个被从相同方向上的一组图像数据导出，可选地从电子图像数据导出参考一维轮廓并从参考和捕获的一维轮廓生成差异轮廓， 以及评估所捕获的一维轮廓和参考用于图像质量缺陷的一维轮廓中的至少一个。

公开(公告)号：US07312799B2

公开(公告)日：2007-12-25

申请号：US11102423

申请日：2005-04-08

Applicant: R Victor Klassen ,  Raja Bala

Inventor： R Victor Klassen ,  Raja Bala

IPC: G09G5/00 ,  G06K9/00 ,  G03F3/08 ,  H04N1/46 ,  H04N5/57 ,  G09G5/10

CPC classification number: G09G5/02 ,  G09G2320/0276 ,  G09G2320/0673

Abstract: Provided herein are teachings directed to calibrating an output device such as a color display, using a visual method of determining the gamma for the blue primary that is easier to perform and more consistent than methodologies employing a luminance-matching task. The methodology is based on the insight that accurate gamma estimation for blue is important not for luminance reproduction, but for proper color-balance, and most importantly grey-balance. Thus, it follows to use grey-balancing, rather than luminance-matching, as the criterion for selecting the blue gamma value. One variant as taught herein is to provide a user visual task to find a patch best representing neutral, given previously determined calibrated digital values for the red and green primaries that produce 50% fractional luminance. A large patch is displayed within a larger surround containing both a white border and either a checkerboard or a line pattern, so as to establish a reference for the neutral axis. The user adjusts a control causing only the value of the blue primary to change. This changes the color of the patch in the middle, moving it along a line from yellowish to bluish. The user thus selects the value at which the patch appears most nearly neutral with respect to the surround. Effectively, the task is to match the chromaticity of a grey patch with that of a halftone pattern.

Abstract translation: 本文提供的是针对校准诸如彩色显示器的输出设备的教导，使用与使用亮度匹配任务的方法相比更容易执行并且更一致的蓝色主要的伽马的可视方法。 该方法基于以下认识：蓝色的精确伽玛估计对于亮度再现而言是重要的，但是对于适当的色彩平衡，最重要的是灰平衡。 因此，使用灰度平衡而不是亮度匹配，作为用于选择蓝色伽马值的标准。 给出本文教导的一种变型是提供用户可视化任务，以找到代表中性的最佳贴片，给出产生50％分数亮度的红色和绿色原色的先前确定的校准数字值。 一个较大的贴片显示在一个包含白色边框和棋盘或线条图案的较大环绕中，以便建立中立轴的参考。 用户调整仅导致蓝色主要值改变的控件。 这会改变中间的补丁的颜色，将其沿着一条线从黄色移动到蓝色。 因此，用户选择补丁出现的相对于环绕最接近中立的值。 有效地，任务是将灰色贴片的色度与半色调图案的色度相匹配。

公开(公告)号：US07295349B2

公开(公告)日：2007-11-13

申请号：US10458427

申请日：2003-06-11

Applicant: Howard A. Mizes ,  R. Victor Klassen

Inventor： Howard A. Mizes ,  R. Victor Klassen

IPC: G06K9/40

CPC classification number: H04N1/00002 ,  H04N1/00005 ,  H04N1/00042 ,  H04N1/0005 ,  H04N1/00082 ,  H04N1/00092 ,  H04N1/405 ,  H04N1/6033

Abstract: Diminished intensity defects occur in electrostatic printing between image regions having grey levels, i.e., different electrostatic potential and toner densities. Such defects occur when higher density regions “steal” toner from lower density regions. The system and methods according to this invention compensate for these defects by modifying the input image data. The input image data in lighter regions that precede or occur near a light-to-dark transition to a dark region are raised above the input image values. Thus, when printed, the printed image intensity values in such regions are higher than the corresponding image intensity values. As a result, when the higher density regions steal the extra toner provided due to the raised values, the gray level of the printed image corresponds to the desired gray level. The magnitude of these defects is periodically measured with a calibration pattern to generate and/or update compensation factors used in the compensation process.

Abstract translation: 在具有灰度级的图像区域（即，不同的静电电位和调色剂密度）之间的静电印刷中出现缺陷强度缺陷。 当较高密度区域从较低密度区域“偷”“调色剂时，会发生这种缺陷。 根据本发明的系统和方法通过修改输入图像数据来补偿这些缺陷。 在暗区域的暗到暗过渡之前或之后的较亮区域中的输入图像数据升高到输入图像值之上。 因此，当打印时，这些区域中的打印图像强度值高于相应的图像强度值。 结果，当较高密度区域由于升高的值而窃取提供的多余的调色剂时，印刷图像的灰度等于期望的灰度级。 这些缺陷的大小通过校准模式周期性地测量，以产生和/或更新补偿过程中使用的补偿因子。

公开(公告)号：US06760056B2

公开(公告)日：2004-07-06

申请号：US09738573

申请日：2000-12-15

Applicant: R. Victor Klassen ,  Stephen C. Morgana ,  Robert P. Loce ,  Michael Branciforte ,  Daniel R. Maurer ,  Michael J. Martin ,  Robert M. Lofthus

Inventor： R. Victor Klassen ,  Stephen C. Morgana ,  Robert P. Loce ,  Michael Branciforte ,  Daniel R. Maurer ,  Michael J. Martin ,  Robert M. Lofthus

IPC: B41J247

CPC classification number: B41J2/471

Abstract: A method for rendering a raster output level determines an image position of a pixel of interest (POI) within an image. An intended raster output level, which corresponds to the POI, is received into a processing device. A final raster input level is determined as a function of the image position and the intended raster output level. The final input level and the image position are transmitted to an output device. An actual raster output level is rendered, via the output device, at a position on an output medium corresponding to the image position. The actual raster output level substantially matches the intended raster output level.

Abstract translation: 用于渲染光栅输出电平的方法确定图像内的感兴趣像素（POI）的图像位置。 对应于POI的预期光栅输出电平被接收到处理设备中。 根据图像位置和预期的光栅输出电平确定最终光栅输入电平。 最终输入电平和图像位置被发送到输出设备。 通过输出设备，在对应于图像位置的输出介质上的位置处渲染实际的光栅输出电平。 实际光栅输出电平基本上与预期的光栅输出电平相匹配。

公开(公告)号：US06731796B2

公开(公告)日：2004-05-04

申请号：US09731338

申请日：2000-12-06

Applicant: Martin S. Maltz ,  R. Victor Klassen ,  Thyagarajan Balasubramanian

Inventor： Martin S. Maltz ,  R. Victor Klassen ,  Thyagarajan Balasubramanian

IPC: G06K900

CPC classification number: H04N1/6027 ,  H04N1/622

Abstract: A transformation function defines a relationship between a first color space and a second color space. The transformation function is edited by producing first and second outputs of an image in the first and second color spaces, respectively. The outputs are related in accordance with the transformation function. A portion of the first output, which corresponds to a portion of the second output including a color to be modified, is selected via a graphical user interface. A desired amount to modify the color is specified. A correction function is determined in accordance with the desired amount. The transformation table is edited in accordance with the monotonic correction function.

Abstract translation: 变换函数定义第一颜色空间和第二颜色空间之间的关系。 通过分别在第一和第二颜色空间中产生图像的第一和第二输出来编辑变换函数。 输出根据变换函数相关。 通过图形用户界面选择第一输出的对应于包括要修改的颜色的第二输出的一部分的一部分。 指定修改颜色的所需数量。 根据期望的量确定校正功能。 变换表根据单调校正函数进行编辑。

公开(公告)号：US06535635B1

公开(公告)日：2003-03-18

申请号：US09426329

申请日：1999-10-25

Applicant: R. Victor Klassen ,  Brian Waldron

Inventor： R. Victor Klassen ,  Brian Waldron

IPC: G06K900

CPC classification number: H04N1/52 ,  G06K15/00 ,  G06K2215/0094

Abstract: An error diffusion technique seeks to remove artifacts resulting from the diffusion of large errors. This technique removes artifacts resulting from instances where there is little difference between a source color and a target color but there is a large diffused error component. The error diffusion technique clips a combination vector resulting from the combination of a source color with the diffused error component so that the combination vector extends roughly one quarter of the width of a color gamut beyond the boundary of the color gamut. This helps to prevent ever-increasing error vectors and, thus, helps prevent certain artifacts in images that are output.

Abstract translation: 误差扩散技术旨在消除由于大误差扩散而产生的伪像。 此技术可以从源颜色和目标颜色之间几乎没有差异的实例中删除工件，但存在大的扩散错误组件。 误差扩散技术剪辑由源颜色与扩散误差分量的组合产生的组合矢量，使得组合矢量大约延伸超过色域边界的色域的宽度的四分之一。 这有助于防止不断增加的错误向量，从而有助于防止输出的图像中的某些伪影。

公开(公告)号：US06525741B1

公开(公告)日：2003-02-25

申请号：US09386014

申请日：1999-08-30

Applicant: R. Victor Klassen ,  Steven J. Harrington

Inventor： R. Victor Klassen ,  Steven J. Harrington

IPC: G09G500

CPC classification number: G06T11/001 ,  G06T2200/12 ,  H04N5/272 ,  H04N9/75

Abstract: A method of combining a foreground image and a background image includes scaling up a pixel of interest, which is positioned along an edge between a subject and a key colored backing, into a plurality of edge subpixels. The pixel of interest is included in a digital antialiased foreground image. A corresponding pixel of a digital background scene is also scaled up. The corresponding pixel is associated with the pixel of interest and is scaled up into a plurality of background subpixels. For each of the edge subpixels, if a color of the edge subpixel matches the key colored backing, a respective new color of the edge subpixel is determined as a function of one of the background subpixels, which is associated with the edge subpixel. Also, the new color is stored to the edge subpixel. After all the subpixels have been evaluated, the edge subpixels are scaled down to a new pixel of interest.

Abstract translation: 组合前景图像和背景图像的方法包括将沿着被摄体和彩色背景的键之间的边缘定位的感兴趣的像素放大到多个边缘子像素中。 感兴趣的像素被包括在数字抗锯齿前景图像中。 数字背景场景的相应像素也被放大。 对应的像素与感兴趣的像素相关联并且被放大到多个背景子像素。 对于每个边缘子像素，如果边缘子像素的颜色与键色背衬匹配，则根据与边缘子像素相关联的背景子像素之一来确定边缘子像素的相应新颜色。 此外，新的颜色存储到边缘子像素。 在所有子像素被评估之后，边缘子像素被缩小到新的关注像素。

公开(公告)号：US06507669B1

公开(公告)日：2003-01-14

申请号：US09359557

申请日：1999-07-22

Applicant: R. Victor Klassen

Inventor： R. Victor Klassen

IPC: G06K900

CPC classification number: H04N1/64 ,  H04N19/593 ,  H04N19/91

Abstract: A method and apparatus for selecting clusters of a set of data items by using a histogram. This method includes receiving item data including coordinates of a metric space; dividing the metric space into a plurality of bins; associating a distance from at least a particular coordinate to each of the item data; inserting each of the item data into a bin within the distance of the item data so as to generate a histogram and, using the histogram to obtain one or more clusters.

Abstract translation: 一种用于通过使用直方图来选择一组数据项的簇的方法和装置。 该方法包括接收包括度量空间的坐标的项目数据; 将度量空间划分成多个箱; 将至少一个特定坐标的距离与每个项目数据相关联; 将项目数据中的每一个插入项目数据的距离内的一个bin中，以便生成直方图，并且使用直方图来获得一个或多个簇。

公开(公告)号：US06385337B1

公开(公告)日：2002-05-07

申请号：US09217209

申请日：1998-12-21

Applicant: R. Victor Klassen

Inventor： R. Victor Klassen

IPC: G06K900

CPC classification number: H04N1/64 ,  H04N19/593 ,  H04N19/91

Abstract: A method and apparatus for selecting colors for blocks for use in a Block truncation Coding scheme is disclosed. The method includes finding the largest cluster of pixels and selecting that color for the first color in the block. The average color of the remaining pixels is assigned to the second color. The invention may be applied in iterative fashion if more than two colors are to be assigned to the block.

Abstract translation: 公开了一种用于选择用于块截断编码方案的块的颜色的方法和装置。 该方法包括找到最大的像素簇并为块中的第一种颜色选择该颜色。 剩余像素的平均颜色被分配给第二颜色。 如果将多于两种颜色分配给块，则本发明可以以迭代方式应用。

公开(公告)号：US6161919A

公开(公告)日：2000-12-19

申请号：US253941

申请日：1999-02-22

Applicant: R. Victor Klassen

Inventor： R. Victor Klassen

IPC: B41J2/21 ,  G06K15/10 ,  H04N1/52 ,  B41J2/47

CPC classification number: B41J2/2128 ,  G06K15/102 ,  G06K2215/0094 ,  H04N1/52

Abstract: A method for processing a color image for printing to reduce an amount of marking material used therefor, includes: providing a printer capable of printing multiple dot sizes at any given print pixel, the multiple dot sizes including at least a large dot size and a small dot size smaller than the large dot size; determining if marking material for multiple colors of the color image are to be printed at the print pixel; and printing the color image with a combination of the large dot size and the small dot size, wherein either of the large dot size and the small dot size is printed at the print pixel if only a single color is printed at the pixel, and at least one of the small dot size is printed at the print pixel if more than one color is printed at the pixel.

Abstract translation: 一种用于处理用于打印的彩色图像以减少其使用的标记材料的量的方法，包括：提供能够在任何给定的打印像素处打印多个点尺寸的打印机，所述多个点尺寸至少包括大的点尺寸和小的尺寸 点大小小于大点大小; 确定是否要在打印像素上打印彩色图像的多种颜色的标记材料; 并且以大点尺寸和小点尺寸的组合打印彩色图像，其中如果在像素处仅打印单个颜色，则在打印像素处打印大点尺寸和小点尺寸中的任何一个，并且在 如果在像素处印刷多于一种颜色，则在打印像素上打印至少一个小点尺寸。