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1. 发明授权

US5295236A Applying traps to a printed page specified in a page description language format 失效
标题翻译：将陷阱应用于以页面描述语言格式指定的打印页面
公开(公告)号：US5295236A
公开(公告)日：1994-03-15
申请号：US664064
申请日：1991-03-04
申请人： Per H. Bjorge , Alan Blannin , Keith R. Deutsch
发明人： Per H. Bjorge , Alan Blannin , Keith R. Deutsch
IPC分类号： G06K15/00 , G06K15/02 , G06K15/12 , H04N1/58 , G06F15/62
CPC分类号： H04N1/58 , G06K15/00 , G06K15/02 , G06K15/129 , G06K15/1826 , G06K2215/0094
摘要： A trapping technique which accepts a Postscript or other page description language (PDL) file and outputs a file in PDL format having the correct traps. The input page is first divided into sub-portions, or tiles, and the tiles are individually processed by evaluating the input file in a corresponding clipping window. Each tile is then analyzed to determine where edges exist. The edge data is fed to an edge converter which produces a list of color transitions consisting of the analytic description of each edge and the color information along the sides of the edge. The color transition information is fed to a trapping analyzer which generates trap vectors in accordance with a set of desired trapping rules. The trap vectors are then converted to PDL form. As a final step, the trap vectors are added to the original PDL file. The final trapped page may be printed on standard typesetters without the need for special trap generator hardware.
摘要翻译：接受Postscript或其他页面描述语言（PDL）文件的陷印技术，并输出具有正确陷阱的PDL格式的文件。首先将输入页面划分为子部分或瓦片，并通过在对应的剪切窗口中评估输入文件来单独处理瓦片。然后分析每个瓦片以确定边缘存在的位置。边缘数据被馈送到边缘转换器，该边缘转换器产生由边缘的分析描述和沿着边的边的颜色信息组成的颜色转换的列表。色彩转换信息被馈送到捕获分析器，其根据一组期望的捕获规则产生陷阱向量。陷阱向量然后转换为PDL形式。作为最后一步，陷阱向量将添加到原始的PDL文件中。最终被困的页面可以打印在标准排版机上，而不需要特殊的陷阱发生器硬件。

2. 发明授权

US5226175A Technique for representing sampled images 失效
标题翻译：表示采样图像的技术
公开(公告)号：US5226175A
公开(公告)日：1993-07-06
申请号：US679167
申请日：1991-03-26
申请人： Keith R. Deutsch , Per H. Bjorge , Alan Blannin
发明人： Keith R. Deutsch , Per H. Bjorge , Alan Blannin
IPC分类号： H04N1/41 , H04N7/26
CPC分类号： G06T9/00 , G06T9/20 , G06T9/40 , H04N19/20
摘要： A technique for developing an analytic model of an image by operating directly upon the pixel map representation output by an optical sampling device, such as a scanner. The resulting analytic representation is hierarchical, below a certain level, with each element an analytic expression representing a portion of the image. Above a certain level, the model is a simple array, to facilitate certain types of graphical manipulations. The model is developed by arranging pixel values into a number of groups called tiles. A number of operations are then performed on each tile, to determine how it can best be represented as an analytic expression. For example, if all pixel values in a tile are approximately continuously varying, they be represented as a three-dimensional linearly sloped surface. However, if one or more intensity boundaries run through the tile, analytic expressions, such as a straight line or a parabolic line segment, are derived from the tile's pixel values to describe the edges.
摘要翻译：通过直接操作由诸如扫描仪之类的光取样装置输出的像素图表示来开发图像的分析模型的技术。所得到的分析表示是分层的，低于某一水平，每个元素都是表示图像的一部分的分析表达式。在一定程度上，该模型是一个简单的数组，以方便某些类型的图形操作。该模型是通过将像素值排列成多个称为图块的组来开发的。然后在每个图块上执行多个操作，以确定如何最好地表示为分析表达式。例如，如果瓦片中的所有像素值近似连续变化，则它们被表示为三维线性倾斜表面。然而，如果一个或多个强度边界穿过瓦片，则从瓦片的像素值导出分析表达式，例如直线或抛物线线段以描述边缘。

3. 发明授权

US5187594A Method of creating and applying half tone screen patterns 失效
标题翻译：创建和应用半色调屏幕图案的方法
公开(公告)号：US5187594A
公开(公告)日：1993-02-16
申请号：US477799
申请日：1990-02-09
申请人： Keith R. Deutsch , Per H. Bjorge , Alan Blannin
发明人： Keith R. Deutsch , Per H. Bjorge , Alan Blannin
IPC分类号： H04N1/405
CPC分类号： H04N1/4058
摘要： A technique for creating and applying half tone screen patterns by computer, consisting of a screen generator and a screen applicator. The screen generator accepts a set of parameters specifying the angle and frequency of the desired screen, the output printing device resolution, and parameter tolerances. It then produces a half tone screen pattern file according to the specified parameters, as a set of repeat arrays for each desired gray level. The screen applicator accepts an input contone image representation such as is produced by a scanner or other device, and the half tone screen pattern file produced by the screen generator. It then interpolates between the pixel values, at the output device resolution, by examining the repeat arrays for each device cell. In this way, a representation of a half tone screening of the input contone image results where the output device resolution is fully exploited.
摘要翻译：一种通过计算机创建和应用半色调屏幕图案的技术，由屏幕生成器和屏幕涂布器组成。屏幕生成器接受一组参数，指定所需画面的角度和频率，输出打印设备分辨率和参数公差。然后根据指定的参数产生一个半色调屏幕图案文件，作为每个所需灰度级的一组重复阵列。屏幕施加器接受由扫描仪或其他设备产生的输入连字图像表示，以及由屏幕生成器产生的半色调屏幕图案文件。然后，通过检查每个设备单元的重复阵列，在输出设备分辨率的像素值之间内插。以这种方式，输入连续色调图像的半色调显示的结果导致输出设备分辨率得到充分利用。

4. 发明授权

US5542052A Applying traps to a printed page specified in a page description language format 失效
标题翻译：将陷阱应用于以页面描述语言格式指定的打印页面
公开(公告)号：US5542052A
公开(公告)日：1996-07-30
申请号：US188246
申请日：1994-01-26
申请人： Keith R. Deutsch , Per H. Bjorge , Alan Blannin , Eric J. Bean , Douglas L. Peltonen , Timothy H. Roth
发明人： Keith R. Deutsch , Per H. Bjorge , Alan Blannin , Eric J. Bean , Douglas L. Peltonen , Timothy H. Roth
IPC分类号： B41J2/525 , G06F3/12 , G06K15/00 , G06K15/02 , G06K15/12 , H04N1/387 , H04N1/58 , G06T11/40
CPC分类号： G06K15/00 , G06K15/02 , G06K15/129 , G06K15/1826 , H04N1/58 , G06K2215/0094
摘要： A trapping technique that accepts a Postscript or other page description language (PDL) file and outputs a file in PDL format having the correct traps. The input page is first divided into subportions, or tiles, and the tiles are individually processed by evaluating the input file in a corresponding dipping window. Each tile is then analyzed to determine the presence of boundaries or intersections between page objects or color regions. A trapping analyzer generates trap vectors in accordance with a set of desired trapping rules which take into account existing traps and the proximity of other page objects. In a preferred embodiment, the trap vectors are then convened to PDL form.
摘要翻译：接受Postscript或其他页面描述语言（PDL）文件的陷印技术，并输出具有正确陷阱的PDL格式的文件。首先将输入页面分为子部分或瓦片，并通过评估相应的浸渍窗口中的输入文件来单独处理瓦片。然后分析每个瓦片以确定页面对象或颜色区域之间的边界或交点的存在。捕获分析器根据一组期望的捕获规则产生陷阱向量，其考虑到现有陷阱和其他页面对象的接近度。在优选的实施方案中，捕获载体然后被转移到PDL形式。

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