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32 条记录 (耗时 0.029 秒)

    Compact high addressability rendering
    1.
    发明授权
    Compact high addressability rendering 有权
    紧凑的高可寻址性渲染

    公开(公告)号：US06608701B1

    公开(公告)日：2003-08-19

    申请号：US09348378

    申请日：1999-07-07

    申请人： Robert P. Loce ,  Michael Branciforte ,  Fritz F. Ebner ,  Douglas N. Curry ,  Yeqing Zhang ,  Leon C. Williams

    发明人： Robert P. Loce ,  Michael Branciforte ,  Fritz F. Ebner ,  Douglas N. Curry ,  Yeqing Zhang ,  Leon C. Williams

    IPC分类号： G06K936

    CPC分类号： H04N1/4052 ,  H04N1/4056

    摘要： A compact rendering processor for processing image data including a multi-bit halftone region generates high addressability pixels. The compact rendering processor includes a tagging sub-processor operating on the image data to identify a target pixel and a neighboring pixel to determine a fill-order. The compact rendering processor also includes a rendering sub-processor that converts the target pixel into a high addressability pixel based upon the fill-order. Optionally, a diffusion sub-processor can be included to diffuse an error resulting from the conversion of the target pixel into a high addressability pixel to other pixels within the image data.

    摘要翻译： 用于处理包括多位半色调区域的图像数据的紧凑渲染处理器产生高可寻址性像素。 紧凑渲染处理器包括对图像数据进行操作的标记子处理器，以识别目标像素和相邻像素以确定填充顺序。 紧凑渲染处理器还包括渲染子处理器，其基于填充顺序将目标像素转换为高可寻址性像素。 可选地，可以包括扩散子处理器以将由目标像素转换成高可寻址性像素所产生的误差扩散到图像数据内的其他像素。

    Compact-dot reproduction of scanned halftone screens
    2.
    发明授权
    Compact-dot reproduction of scanned halftone screens 失效
    扫描半色调屏幕的紧凑点再现

    公开(公告)号：US06683702B1

    公开(公告)日：2004-01-27

    申请号：US09348398

    申请日：1999-07-07

    申请人： Robert P. Loce ,  Michael Branciforte ,  Yeqing Zhang ,  Leon C. Williams

    发明人： Robert P. Loce ,  Michael Branciforte ,  Yeqing Zhang ,  Leon C. Williams

    IPC分类号： G06K936

    CPC分类号： H04N1/40075 ,  H04N1/4056

    摘要： A method of reproducing a document including halftoned regions therein scans the document to generate scanned image data comprising a digitized representation of said document. The scanned image data that corresponds to the halftoned regions is then rendered using a compact rendering process that includes positioning an observation window about a target pixel and a neighboring pixel; selecting a fill-order based upon a result of the analyzing step; and generating a high addressability pixel as a function of the selected fill-order.

    摘要翻译： 再现包括其中的半色调区域的文档的方法扫描文档以生成包括所述文档的数字化表示的扫描图像数据。 然后使用包括定位关于目标像素和相邻像素的观察窗的紧凑渲染过程来渲染与半色调区域对应的扫描图像数据; 基于分析步骤的结果选择填充顺序; 以及根据所选择的填充顺序生成高可寻址性像素。

    Tagging of antialiased images
    4.
    发明授权
    Tagging of antialiased images 失效
    标记抗锯齿图像

    公开(公告)号：US06243499B1

    公开(公告)日：2001-06-05

    申请号：US09046424

    申请日：1998-03-23

    申请人： Robert P. Loce ,  Yeqing Zhang ,  Michael Branciforte

    发明人： Robert P. Loce ,  Yeqing Zhang ,  Michael Branciforte

    IPC分类号： G06K940

    CPC分类号： G06T5/20

    摘要： The present invention is a method and apparatus for the identification and tagging of antialiased pixels within regions of an image. The techniques described improve the recognition of fine gray features and enable the detection of both black and white features on high and low contrast backgrounds. The system relies on the establishment of the sense (positive/negative) of an image by first using a histogramming operation. Once the sense is determined, a plurality of logical channels are used to select a threshold, binarize a region of the image, generate a vector representative of the region, and to process the vector to identify whether an antialiased pixel is present therein. Subsequently, the output of the channels is logically combined to produce an antialias tag.

    摘要翻译： 本发明是用于识别和标记图像区域内的抗锯齿像素的方法和装置。 所描述的技术改善了细灰色特征的识别，并且能够在高对比度和低对比度背景下检测黑白特征。 该系统首先使用直方图操作来依赖图像的感觉（正/负）的建立。 一旦确定了感觉，则使用多个逻辑信道来选择阈值，二值化图像的区域，生成表示该区域的向量，并且处理该矢量以识别其中是否存在抗锯齿像素。 随后，通道的输出被逻辑地组合以产生抗混叠标签。

    Rank-order error diffusion image processing
    7.
    发明授权
    Rank-order error diffusion image processing 失效

    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.

    Logic-based image processing method
    8.
    发明授权
    Logic-based image processing method 有权
    基于逻辑的图像处理方法

    公开(公告)号：US06297889B1

    公开(公告)日：2001-10-02

    申请号：US09218688

    申请日：1998-12-22

    申请人： Robert P. Loce ,  Michael Branciforte ,  Ying-wei Lin

    发明人： Robert P. Loce ,  Michael Branciforte ,  Ying-wei Lin

    IPC分类号： G06K1502

    CPC分类号： G06T5/20 ,  H04N1/58

    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。

    Macro uniformity correction for x-y separable non-uniformity
    10.
    发明授权
    Macro uniformity correction for x-y separable non-uniformity 有权
    x-y可分离不均匀性的宏均匀性校正

    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。