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91. 发明授权

US06608643B2 Systems and method for measuring or reducing spacing errors in multiple beam ROS systems 有权
标题翻译：用于测量或减少多波束ROS系统中的间隔误差的系统和方法
公开(公告)号：US06608643B2
公开(公告)日：2003-08-19
申请号：US10046234
申请日：2002-01-16
申请人： Robert M. Lofthus , Patrick Y. Maeda , Daniel W. Costanza , Kristine A. German , Fred F. Hubble, III , Robert P. Loce
发明人： Robert M. Lofthus , Patrick Y. Maeda , Daniel W. Costanza , Kristine A. German , Fred F. Hubble, III , Robert P. Loce
IPC分类号： B41J247
CPC分类号： G02B26/123 , G02B26/127
摘要： An apparatus for correcting beam-to-beam spacing error on an image plane of a photoreceptor includes a controller which generates beam-to-beam spacing error corrections signals, a plurality of optical elements, each of which is adjustable and responsive to beam-to-beam spacing error correction signal and a gray level measurement device. The controller performs the beam-to-beam spacing error correction analysis, determining whether or not a correction is necessary, and if so, which optical element to adjust and the magnitude of adjustment. Enhanced toner area coverage sensors are used to detect the gray level of a toned area of raster scan line patterns at various locations across the photoreceptor image plane. By repeatedly evaluating the beam-to-beam spacing error during operation, the apparatus of the invention is able to correct beam-to-beam spacing errors that may develop during operation and does not permit residual errors to persist even after an initial correction has been implemented.
摘要翻译：用于校正感光体的图像平面上的光束到光束间隔误差的装置包括产生光束到光束间隔误差校正信号的控制器，多个光学元件，每个光学元件可调节并且响应于光束到光束光束间隔误差校正信号和灰度级测量装置。控制器执行波束对波束间隔误差校正分析，确定是否需要校正，如果是，则调整哪个光学元件和调整幅度。增强的调色剂区域覆盖传感器用于检测在感光体图像平面上的各个位置处的光栅扫描线图案的色调区域的灰度级。通过在操作期间重复评估波束对波束间隔误差，本发明的装置能够校正在操作期间可能产生的波束间距误差，并且即使在初始校正已经被保持之后也不允许残留误差保持实施。

92. 发明授权

US06356654B1 Systems and methods for template matching of multicolored images 有权
标题翻译：多彩图像模板匹配的系统和方法
公开(公告)号：US06356654B1
公开(公告)日：2002-03-12
申请号：US09219705
申请日：1998-12-23
申请人： Robert P. Loce , Michael S. Cianciosi , Ying-Wei Lin
发明人： Robert P. Loce , Michael S. Cianciosi , Ying-Wei Lin
IPC分类号： G06K900
CPC分类号： H04N1/58
摘要： Systems and methods for template matching of multicolored images provide an image conversion process that respectively views two, three or four input color planes through an input observation window. Single plane vectors are obtained that represent the color planes. The obtained single plane vectors are combined into a multi-plane vector that may be used in a look-up table for descreening or resolution enhancement, for example. Various interactions between color planes may be taken into account to provide optimum color space conversion. Additional information obtained by using the multi-plane vector allow performance of image processes with optimized accurate color values.
摘要翻译：用于多色图像的模板匹配的系统和方法提供了通过输入观察窗口分别观看两个，三个或四个输入彩色平面的图像转换处理。获得表示颜色平面的单平面向量。获得的单平面矢量被组合成例如可以用于查看表中用于去网或分辨率增强的多平面矢量。可以考虑色平面之间的各种相互作用，以提供最佳的颜色空间转换。通过使用多平面矢量获得的附加信息允许以优化的精确色彩值执行图像处理。

93. 发明授权

US06343159B1 Method and apparatus for modeling and reconstruction of halftoned images 有权
标题翻译：用于建模和重建半色调图像的方法和装置
公开(公告)号：US06343159B1
公开(公告)日：2002-01-29
申请号：US09219703
申请日：1998-12-23
申请人： Clara Cuciurean-Zapan , Ramesh Nagarajan , Robert P. Loce , Jeffrey D. Kingsley
发明人： Clara Cuciurean-Zapan , Ramesh Nagarajan , Robert P. Loce , Jeffrey D. Kingsley
IPC分类号： G06K936
CPC分类号： H04N1/40075 , G06T5/002 , G06T5/003 , G06T5/20 , G06T2207/20192
摘要： The methods and apparatus of this invention model and reconstruct binarized images. A grayscale image is modeled using a template matching approach. Each binarized grayscale image value is characterized by a unique set of templates which are rotations of each other. The set of templates allows construction of a look-up table between patterns and grayscale values. The look-up table is provided with a limited number of entries. As a result, the number of entries in the look-up table is reduced. The look-up table thus obtained is used for reconstructing the original grayscale image from the binarized image. The generated image quality is good in comparison with conventional methods. The process may be applied to various halftoning processes including error-diffusion processes.
摘要翻译：本发明的方法和装置模拟和重建二值化图像。使用模板匹配方法对灰度图像进行建模。每个二进制灰度图像值的特征在于一组唯一的模板，它们是彼此的旋转。该模板集允许构建模式和灰度值之间的查找表。查找表中提供了有限数量的条目。结果，查找表中的条目数量减少了。如此获得的查找表用于从二值化图像重建原始灰度图像。与常规方法相比，生成的图像质量良好。该方法可以应用于各种半色调处理，包括误差扩散过程。

94. 发明授权

US6167166A Method to enable the recognition and rendering of antialiased images 失效
标题翻译：允许识别和渲染抗锯齿图像的方法
公开(公告)号：US6167166A
公开(公告)日：2000-12-26
申请号：US46414
申请日：1998-03-23
申请人： Robert P. Loce , Ronald E. Jodoin , Peter A. Crean , Wei Zhu
发明人： Robert P. Loce , Ronald E. Jodoin , Peter A. Crean , Wei Zhu
IPC分类号： H04N1/409 , G06K15/02 , G06T5/20 , G06T11/00 , G06T11/20 , H04N1/405 , G03F3/08
CPC分类号： H04N1/4056 , G06K15/02 , G06K2215/006 , G06K2215/0071 , G06T11/001
摘要： The present invention is a method for antialiased rendering (AAR) of an image. First, tagging methods for identifying antialiased pixels were described, the methods being employed separately or in concert with one another. After identifying AAR pixels, a fill order is determined and applied using a fill order algorithm that preferably employs a pixel window that is a subset of the larger window employed for pixel identification.
摘要翻译：本发明是图像的抗锯齿渲染（AAR）的方法。首先，描述了用于识别抗锯齿像素的标记方法，该方法是单独使用的或彼此协调使用的。在识别AAR像素之后，使用优选采用作为用于像素识别的较大窗口的子集的像素窗口的填充顺序算法来确定和应用填充顺序。

95. 发明授权

US6137918A Memory efficient method and apparatus to enable tagging of thin antialiased lines 失效
标题翻译：能够实现薄抗锯齿线的标记的存储器有效的方法和装置
公开(公告)号：US6137918A
公开(公告)日：2000-10-24
申请号：US46426
申请日：1998-03-23
申请人： Steven J. Harrington , Robert P. Loce
发明人： Steven J. Harrington , Robert P. Loce
IPC分类号： H04N1/409 , G06K15/02 , G06T5/00 , G06T5/20 , G09G5/36 , G06K9/40
CPC分类号： G06K15/02 , G06K2215/0071
摘要： The present invention is a method for efficiently processing an image to detect antialiased pixels using reduced buffering memory. The method stores, in a scanline buffer memory, a predefined number of scanlines of data including data for a target pixel position and, in a tag buffer memory, a plurality of binary antialiasing tags, including at least a previously estimated tag for the target pixel position. Then using the stored pixel data and previously estimated tag, an antialiasing tag for the target pixel position is generated.
摘要翻译：本发明是一种用于使用减少的缓冲存储器来有效地处理图像以检测抗锯齿像素的方法。该方法在扫描线缓冲存储器中存储包括目标像素位置的数据的预定数量的数据扫描线，并且在标签缓冲存储器中存储多个二进制抗混叠标签，所述多个二值抗锯齿标签至少包括用于目标像素的先前估计的标签位置。然后使用存储的像素数据和先前估计的标签，生成针对目标像素位置的抗混叠标签。

96. 发明授权

US5862305A Logic filters for resolution conversion of digital images 失效
标题翻译：用于数字图像分辨率转换的逻辑滤波器
公开(公告)号：US5862305A
公开(公告)日：1999-01-19
申请号：US721065
申请日：1996-09-26
申请人： Girmay K. Girmay , Robert P. Loce
发明人： Girmay K. Girmay , Robert P. Loce
IPC分类号： G06T3/40 , H04N1/40 , G06K1/00 , G06K9/36
CPC分类号： H04N1/40068 , G06T3/40
摘要： The present invention is a method and apparatus for logic based resolution conversion and enhancement of digital images. The invention employs a selectively controllable architecture wherein a plurality of input resolutions can be converted to a common output resolution. The system has particular use in highlight color systems, wherein the highlight color data may be processed separately for each color plane, using the present invention, and then recombined to produce enhanced highlight color output. Moreover, the hardware preferably employs an interlocked area mapping technique to produce the resolution converted bit planes of digital image data.
摘要翻译：本发明是用于基于逻辑的分辨率转换和数字图像增强的方法和装置。本发明采用选择性可控的架构，其中多个输入分辨率可被转换为公共输出分辨率。该系统在高亮度颜色系统中具有特别的用途，其中可以使用本发明为每个彩色平面分别处理高亮度颜色数据，然后重新组合以产生增强的高亮颜色输出。此外，硬件优选采用互锁区域映射技术来产生数字图像数据的分辨率转换位平面。

97. 发明授权

US5696845A Method for design and implementation of an image resolution enhancement system that employs statistically generated look-up tables 失效
标题翻译：用于设计和实现使用统计生成的查找表的图像分辨率增强系统的方法
公开(公告)号：US5696845A
公开(公告)日：1997-12-09
申请号：US169485
申请日：1993-12-17
申请人： Robert P. Loce , Michael S. Cianciosi
发明人： Robert P. Loce , Michael S. Cianciosi
IPC分类号： H04N1/40 , G06K15/02 , G06T3/40 , G06T5/20 , G06K9/40 , G06F15/00
CPC分类号： G06T3/40 , G06K15/02 , G06K2215/0071
摘要： The present invention is a method and apparatus for improving the appearance of printed documents, and more specifically, to the use of a template matching process to enhance the fast-scan resolution of digital images while maintaining raster resolution for printing. The present invention uses multiple-bit per pixel, statistically generated templates, implemented using look-up tables, to improve document appearance by converting from a single-bit per pixel to N-bits per pixel, while preserving raster resolution of the printed output. The resulting N-bit per pixel image signals may be utilized to control a scanning beam where the beam varies in intensity and duration according to the pulses used to control it.
摘要翻译：本发明是一种用于改善打印文档的外观的方法和装置，更具体地说，涉及使用模板匹配处理来增强数字图像的快速扫描分辨率，同时保持用于打印的光栅分辨率。本发明使用通过使用查找表实现的统计生成的模板，通过从单个位每像素转换为每像素N位，同时保持打印输出的光栅分辨率来使用多位每像素，统计生成的模板。所得到的N位每像素图像信号可以用于控制扫描光束，其中光束根据用于控制它的脉冲的强度和持续时间而变化。

98. 发明授权

US5579445A Image resolution conversion method that employs statistically generated multiple morphological filters 失效
标题翻译：采用统计生成的多种形态滤波器的图像分辨率转换方法
公开(公告)号：US5579445A
公开(公告)日：1996-11-26
申请号：US169487
申请日：1993-12-17
申请人： Robert P. Loce , Michael S. Cianciosi , Jeffrey D. Kingsley
发明人： Robert P. Loce , Michael S. Cianciosi , Jeffrey D. Kingsley
IPC分类号： H04N1/409 , G06T3/40 , G06T5/20 , G09G5/36 , G06K15/00
CPC分类号： G06T3/40
摘要： A method and apparatus for automating the design of morphological or template-based filters for print quality enhancement. A plurality of different phase, but same resolution, subsampled images are generated from training documents. Statistical data derived therefrom is then employed in an automated process to generate filters. The filters may be used for resolution enhancement and/or conversion of bitmap images. Furthermore, the statistical data is used to produce filters that are intended to not only optimize image structure, but image density as well.
摘要翻译：一种用于自动化用于打印质量增强的形态或基于模板的过滤器的设计的方法和装置。从培训文件生成多个不同相位，但相同分辨率的子采样图像。然后在自动化过程中采用从其导出的统计数据来生成过滤器。滤波器可用于分辨率增强和/或位图图像的转换。此外，统计数据用于产生旨在不仅优化图像结构而且图像密度的滤波器。

99. 发明授权

US5406379A Method of hybrid halftone printing by limiting the number of gray pixels and gray pixel levels 失效
标题翻译：通过限制灰度像素数量和灰度像素级别的混合半色调打印方法
公开(公告)号：US5406379A
公开(公告)日：1995-04-11
申请号：US980030
申请日：1992-11-23
申请人： Jeffrey D. Kingsley , Robert P. Loce , Susan E. Dunn , William L. Lama
发明人： Jeffrey D. Kingsley , Robert P. Loce , Susan E. Dunn , William L. Lama
IPC分类号： B41J2/52 , G03F5/00 , G03G15/00 , H04N1/23 , H04N1/40 , H04N1/405 , H04N1/21 , G01D9/42
CPC分类号： H04N1/40087
摘要： A hybrid halftone cell selection method enables selection of gray levels in halftone printing algorithms to minimize the effects of noise resulting in nonuniformities, such as, for example, halftone banding. The method requires selection of hybrid halftone cells possessing structures wherein the total number of gray pixels are limited. The number of gray pixels having any given intermediate reflectance level in any halftone cell is also limited. The cell selection method thus reduces the number of TRC gray steps to some minimum required number by eliminating the most noise sensitive cells (i.e. those cells having the highest percentage of gray level pixels). The intermediate reflectance values of the gray pixels in the selected cells are then selected to produce uniform gray steps and reduce variability in the TRC.
摘要翻译：混合半色调细胞选择方法使得能够在半色调打印算法中选择灰度级以最小化导致不均匀性（例如半色调条带）的噪声的影响。该方法需要选择具有其中灰色像素总数有限的结构的混合半色调细胞。在任何半色调单元中具有任何给定中间反射率水平的灰度像素的数量也受到限制。因此，通过消除大多数噪声敏感小区（即具有最高百分比灰度像素的那些小区），小区选择方法将TRC灰阶的数目减少到一些最小所需数量。然后选择所选单元格中的灰色像素的中间反射率值，以产生均匀的灰阶，并减少TRC中的变异性。

100. 发明授权

US5359423A Method for statistical generation of density preserving templates for print enhancement 失效
标题翻译：用于印刷增强的密度保留模板的统计生成方法
公开(公告)号：US5359423A
公开(公告)日：1994-10-25
申请号：US169565
申请日：1993-12-17
申请人： Robert P. Loce
发明人： Robert P. Loce
IPC分类号： B41J2/52 , B41J2/485 , G06T3/40 , G06T5/20 , G09G5/00 , G09G5/391 , H04N1/40 , H04N1/21
CPC分类号： G06T3/40 , H04N1/40068
摘要： The present invention is a method for automating the design of pattern matching templates used to implement a print quality enhancement filter that preserves image density More particularly, the method is directed to the use of a representative set of page description language decomposed or scanned training documents, and statistical data derived therefrom, in an automated process that generates one or more sets of template-pattern pairs that are used as filters for resolution enhancement and/or conversion of bitmap images.
摘要翻译：本发明是用于自动化用于实现保持图像密度的打印质量增强过滤器的图案匹配模板的设计的方法。更具体地，该方法针对使用代表性的一组页面描述语言分解或扫描的培训文档，以及生成用作分辨率增强和/或位图图像的转换的滤波器的一组或多组模板对的自动化过程中的统计数据。

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