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公开(公告)号：US06297889B1
公开(公告)日：2001-10-02
申请号：US09218688
申请日：1998-12-22
IPC分类号： G06K1502
摘要： A method for processing digital images to be displayed, stored, or printed, to eliminate blooming and other artifacts. The system utilizes morphological processes to isolate and modify image structures susceptible to marking process artifacts and then combines the modified image structures with the input image to produce a printable image that may be rendered on a given printer.
摘要翻译： 一种用于处理要显示，存储或打印的数字图像的方法，以消除起霜和其他伪像。 该系统利用形态学过程来分离和修改易受标记过程伪像影响的图像结构，然后将修改的图像结构与输入图像组合，以产生可在给定打印机上呈现的可打印图像。
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公开(公告)号：US06728004B2
公开(公告)日：2004-04-27
申请号：US09870304
申请日：2001-05-30
IPC分类号： B41B944
摘要： A method for processing digital images to be displayed, stored, or printed, to eliminate blooming and other artifacts. The system utilizes morphological processes to isolate and modify image structures susceptible to marking process artifacts and then combines the modified image structures with the input image to produce a printable image that may be rendered on a given printer.
摘要翻译： 一种用于处理要显示，存储或打印的数字图像的方法，以消除起霜和其他伪像。 该系统利用形态学过程来分离和修改易受标记过程伪像影响的图像结构，然后将修改的图像结构与输入图像组合，以产生可在给定打印机上呈现的可打印图像。
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3.发明授权Method and apparatus for the resolution enhancement of gray-scale images that include text and line art 失效用于分辨率增强灰度图像的方法和装置，包括文本和线条艺术
公开(公告)号：US5742703A
公开(公告)日：1998-04-21
申请号：US540998
申请日：1995-10-11
CPC分类号： H04N1/4092 , G06T3/403
摘要： The present invention is a method and apparatus for resolution enhancement of gray-scale input images including text and line art, and more particularly to a filtering method and image processing apparatus for enhancement of high contrast line edges found in continuous tone (gray-scale) images without requiring that the input image data include predetermined tag bits to identify region types (e.g., continuous tone or text and line art).
摘要翻译： 本发明是一种用于分辨率增强灰度输入图像的方法和装置，包括文本和行画，更具体地说，涉及一种用于增强连续色调（灰度级）中发现的高对比度线边缘的滤波方法和图像处理装置， 图像，而不需要输入图像数据包括用于识别区域类型（例如，连续色调或文本和线条艺术）的预定标签位。
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公开(公告)号：US06356654B1
公开(公告)日：2002-03-12
申请号：US09219705
申请日：1998-12-23
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。
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5.发明授权Area mapping employing reference clusters for high quality noninteger resolution conversion with enhancement 失效采用参考簇进行区域映射，以提高高品质非整数分辨率转换
公开(公告)号：US5689343A
公开(公告)日：1997-11-18
申请号：US451376
申请日：1995-05-26
申请人： Robert P. Loce , Ronald E. Jodoin , Ying-wei Lin
发明人： Robert P. Loce , Ronald E. Jodoin , Ying-wei Lin
CPC分类号： G06T3/4023 , H04N1/40068
摘要： A method and apparatus for converting the resolution of an input image to a higher resolution that is a noninteger multiple of the input resolution. The method and apparatus employ either an interlocked or noninterlocked clustering arrangement of output pixels in order to assign to each output pixel a reference value determined from the signal levels of the input image. In addition, the method and apparatus include a template-based enhancement filter to further refine modify or alter the assigned signal level prior to its output as a higher resolution image.
摘要翻译： 一种用于将输入图像的分辨率转换为作为输入分辨率的非整数倍的较高分辨率的方法和装置。 该方法和装置采用输出像素的互锁或非嵌入式聚类布置，以便根据输入图像的信号电平来确定每个输出像素的参考值。 此外，该方法和装置还包括基于模板的增强滤波器，以进一步改进或改变其输出之前的分配信号电平作为较高分辨率图像。
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公开(公告)号：US5493419A
公开(公告)日：1996-02-20
申请号：US502791
申请日：1995-07-14
CPC分类号： H04N1/40075
摘要： The present invention is a method and apparatus for the enhancement of 1 bit per pixel image signals to produce a multiple-bit per pixel form. A binary input image is passed through a plurality of filters to generate level slices. The filters are stack filters implemented as look-up table or template-based filters, morphological filters, or any similar binary-to-binary filters that could be used to generate level slices. Each of the N-1 filters is used to produce the slices, where N is the number of possible gray-scale levels desired in the output image. Once the slices are generated, the resulting binary image data therein is recombined, by adding or stacking, to produce the desired multiple-bit per pixel output.
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7.发明授权
公开(公告)号：US5471320A
公开(公告)日：1995-11-28
申请号：US241432
申请日：1994-05-11
CPC分类号： H04N1/40075
摘要： The present invention is a method and apparatus for the enhancement of 1 bit per pixel image signals to produce a multiple-bit per pixel form. A binary input image is passed through a plurality of filters to generate level slices. The filters are stack filters implemented as look-up table or template-based filters, morphological filters, or any similar binary-to-binary filters that could be used to generate level slices. Each of the N-1 filters is used to produce the slices, where N is the number of possible gray-scale levels desired in the output image. Once the slices are generated, the resulting binary image data therein is recombined, by adding or stacking, to produce the desired multiple-bit per pixel output.
摘要翻译： 本发明是一种用于增强每像素1位像素信号以产生每像素多位的形式的方法和装置。 二进制输入图像通过多个滤波器以生成电平切片。 过滤器是实现为查找表或基于模板的过滤器，形态过滤器或可用于生成级别切片的任何类似的二进制到二进制过滤器的堆栈过滤器。 N-1滤波器中的每一个用于产生切片，其中N是输出图像中所需的可能的灰度级数。 一旦片被生成，其中的所得到的二进制图像数据通过加法或堆叠进行重组，以产生期望的多位每像素输出。
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公开(公告)号：US06834124B1
公开(公告)日：2004-12-21
申请号：US09687111
申请日：2000-10-16
申请人： Ying-wei Lin , Robert P. Loce
发明人： Ying-wei Lin , Robert P. Loce
IPC分类号： G06K940
摘要： An adaptive image enhancement filter includes a template matching module for comparing an observed pixel pattern comprising a target pixel and one or more neighboring pixels to a set of templates to determine if the observed pixel pattern matches any of the templates. The template matching module generates a match identifier signal indicating which of the templates, if any, the observed pixel pattern is found to match. Based on this match identifier, a signal generation module provides an enhanced output signal for the target pixel. The template matching and/or the signal generation modules can be independently modified to adapt to changing conditions as identified by signals identifying image attributes and marking process attributes.
摘要翻译： 自适应图像增强滤波器包括模板匹配模块，用于将包括目标像素和一个或多个相邻像素的观察像素图案与一组模板进行比较，以确定观察到的像素图案是否匹配任何模板。 模板匹配模块生成匹配标识符信号，指示哪个模板（如果有的话）发现观察到的像素图案匹配。 基于该匹配标识符，信号生成模块为目标像素提供增强的输出信号。 可以独立地修改模板匹配和/或信号生成模块以适应由识别图像属性和标记处理属性的信号所识别的变化的条件。
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公开(公告)号：US06760056B2
公开(公告)日：2004-07-06
申请号：US09738573
申请日：2000-12-15
申请人： R. Victor Klassen , Stephen C. Morgana , Robert P. Loce , Michael Branciforte , Daniel R. Maurer , Michael J. Martin , Robert M. Lofthus
发明人： R. Victor Klassen , Stephen C. Morgana , Robert P. Loce , Michael Branciforte , Daniel R. Maurer , Michael J. Martin , Robert M. Lofthus
IPC分类号： B41J247
CPC分类号： B41J2/471
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US07079289B2
公开(公告)日：2006-07-18
申请号：US09968651
申请日：2001-10-01
申请人： Robert P. Loce , Michael Branciforte , Beilei Xu
发明人： Robert P. Loce , Michael Branciforte , Beilei Xu
IPC分类号： H04N1/40
CPC分类号： H04N1/4052
摘要： Error is distributed to pixels neighboring a pixel of interest based on a ranking of the neighboring pixels. The ranking is based on pixel values of the neighboring pixels. Optionally a spatial weighting is applied to the pixel values before ranking, to provide a preference for pixels closest to the pixel of interest or to a particular portion of a related halftone screen. Rank order based error diffusion provides compact halftone dots without patterning artifacts. An image processing system operative to perform rank order error diffusion includes a pixel ranker and an error diffuser. In a xerographic environment the image processing system includes a xerographic printer.
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