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21.发明授权Method and apparatus for distinguishing between noisy continuous tone document types and other document types to maintain reliable image segmentation 有权用于区分嘈杂的连续色调文档类型和其他文档类型以保持可靠的图像分割的方法和装置公开(公告)号：US06411735B1
公开(公告)日：2002-06-25
申请号：US09158868
申请日：1998-09-23
IPC分类号： G06K962
CPC分类号： G06K9/00456 , H04N1/40062
摘要： A method and apparatus are disclosed for distinguishing noisy continuous tone document types from other document types such as halftone or text, in order to maintain reliable image segmentation. In both cases a Range of Video microclassifier is added to the other microclassifiers (Sij, estimated halftone frequency, etc.) to disqualify noisy continuous tone images from being incorrectly classified as other document types such as halftone or text document types.
摘要翻译： 公开了一种用于区分噪声连续色调文档类型和其他文档类型（例如半色调或文本）的方法和装置，以便保持可靠的图像分割。 在这两种情况下，将视频微分类器的范围添加到其他微分类器（Sij，估计的半色调频率等），以使噪声连续色调图像被不正确地分类为诸如半色调或文本文档类型的其他文档类型。
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公开(公告)号：US06304679B1
公开(公告)日：2001-10-16
申请号：US08297437
申请日：1994-08-29
IPC分类号： G06K936
CPC分类号： H03H17/0202 , G06T5/20
摘要： A structure for implementing a plurality of two-dimensional digital filters, such as finite impulse response filters, in an efficient manner. The structure includes a plurality of first stage filters operating in a first dimension in combination with a single second stage filter, operating in a second dimension. The second stage filter being suitable for receiving output from one of the first stage filters. A controller, operating in conjunction with the first and second stage filters is utilized for controlling the operation of all filters, as well as the selection of the input source for the second stage filter.
摘要翻译： 用于以有效的方式实现多个二维数字滤波器的结构，例如有限脉冲响应滤波器。 该结构包括多个第一级过滤器，其与第二维度中操作的单个第二级过滤器结合操作。 第二级过滤器适于接收来自第一级过滤器之一的输出。 与第一和第二级滤波器一起操作的控制器用于控制所有滤波器的操作以及用于第二级滤波器的输入源的选择。
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公开(公告)号：US5959290A
公开(公告)日：1999-09-28
申请号：US004346
申请日：1998-01-08
CPC分类号： H04N1/00801 , H04N1/00795 , H04N1/38 , H04N2201/0422
摘要： A system and method which enables the location and orientation of an image to be determined without introducing scanning artifacts into the rendered image. The system utilizes a separate set of sensors on a scanning bar that are sensitive to a wavelength of light outside the range of wavelengths of the typical sensors found on the scanning bar, such as red, green, or blue. Moreover, the system includes a light source which is capable of emitting the wavelength of light that is outside this range of wavelength of light. Thus, whenever the additional set of sensors detect light, the system would determine that the light was due to a scanning artifact, such as a hole, rip, or dog ear in the original document being scanned. Furthermore, the system would include a process which measures the variations of the image signal in the fastscan and slowscan directions, as well as, the gray level of the video signal from these various measurements, the system would develop a cost value as to the certainty as whether the signal represents a scanning artifact. In such a system, the backing would be embedded with a pattern which would have a predetermined variation in a fastscan direction but have little or no variation in a slowscan direction.
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24.发明授权
公开(公告)号：US5778156A
公开(公告)日：1998-07-07
申请号：US646608
申请日：1996-05-08
CPC分类号： G06T7/0081 , G06T7/0087 , G06T2207/10016 , G06T2207/30176
摘要： A system and method electronically image process a pixel belonging to a set of digital image data with respect to a membership of the pixel in a plurality of image classes. This process uses classification to determine a membership value for the pixel for each image classes and generates an effect tag for the pixel based on the fuzzy classification determination. The pixel is image processed based on the membership vector of the pixel. The image processing may include screening and filtering. The screening process screens the pixel by generating a screen value according to a position of the pixel in the set of digital image data; generating a screen amplitude weighting value based on the values in the membership vector for the pixel; multiplying the screen value and the screen amplitude weighting value to produce a modified screen value; and adding the modified screen value to the pixel of image data. The filtering process filters the pixel by lowpass filtering the pixel; highpass filtering the pixel; non-filtering the pixel; multiplying each filtered pixel by a gain factor based on the values in the membership vector associated with the pixel; and adding the products to produce a filtered pixel of image data.
摘要翻译： 一种系统和方法电子图像处理属于一组数字图像数据的像素相对于多个图像类别中的像素的隶属度。 该过程使用分类来确定每个图像类别的像素的隶属度值，并且基于模糊分类确定来生成像素的效应标签。 基于像素的隶属矢量对像素进行图像处理。 图像处理可以包括筛选和过滤。 筛选过程通过根据数字图像数据集合中的像素的位置生成屏幕值来屏蔽像素; 基于所述像素的隶属向量中的值生成屏幕幅度加权值; 将屏幕值和屏幕振幅加权值相乘以产生修改的屏幕值; 并将修改的屏幕值添加到图像数据的像素。 滤波过程通过对像素进行低通滤波来过滤像素; 高通滤波像素; 不过滤像素; 基于与像素相关联的成员向量中的值，将每个经滤波的像素乘以增益因子; 并添加产品以产生图像数据的滤波像素。
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25.发明授权System for synchronizing integration pulses with integration signal in an asynchronous raster input scanner 失效用于在异步光栅输入扫描器中将积分脉冲与积分信号同步的系统
公开(公告)号：US4878119A
公开(公告)日：1989-10-31
申请号：US161886
申请日：1988-02-29
IPC分类号： G06T1/00 , H04N1/00 , H04N1/028 , H04N1/047 , H04N1/10 , H04N1/107 , H04N1/19 , H04N1/193 , H04N1/32 , H04N1/40
CPC分类号： H04N1/32448 , H04N1/0473 , H04N1/32358 , H04N1/40056 , H04N1/00204 , H04N1/1017 , H04N1/193 , H04N2201/0081 , H04N2201/0082 , H04N2201/0471 , H04N2201/04755 , H04N2201/04786 , H04N2201/329
摘要： Process and apparatus for allowing a raster input scanner with scanning array to operate asynchronously in which timing of the fixed rate shift pulses which delineate the integration period of the array is changed to maintain the shift pulses in timed synchronization with a random integration signal.
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26.发明授权Apparatus and method for modulating image signals in a high addressability printing machine 失效用于在高可寻址性打印机中调制图像信号的装置和方法
公开(公告)号：US5606648A
公开(公告)日：1997-02-25
申请号：US352404
申请日：1994-12-08
CPC分类号： H04N1/4056
摘要： A printing system is provided for printing an image on a substrate. The image is represented by a set of words with each word including M bits and being modulated so as to produce a single bit stream. The printing system includes a multi-phase clock generator, responsive to a clock signal with a first clock rate, for producing N phase signals and a data serializer, communicating with the multi-phase clock generator, for receiving the N phase signals and the word set. In operation, the data serializer processes each word of the word set, with the N phase signals, to produce the single bit stream, the single bit stream being outputted at a second clock rate with the second clock rate being greater than the first clock rate. The data serializer communicates with a print engine, the print engine receiving the single bit stream for imaging the image on the substrate.
摘要翻译： 提供了一种用于在基板上打印图像的打印系统。 图像由一组单词表示，每个单词包括M位并被调制以产生单个比特流。 打印系统包括多相时钟发生器，响应于具有第一时钟速率的时钟信号，用于产生N相信号和与多相时钟发生器通信的数据串行器，用于接收N相信号和字 组。 在操作中，数据串行器利用N相信号处理字集合的每个字以产生单个比特流，该单个比特流以第二时钟速率被输出，第二时钟速率大于第一时钟速率 。 数据串行器与打印引擎通信，打印引擎接收用于对基板上的图像进行成像的单个位流。
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27.发明授权
公开(公告)号：US5513282A
公开(公告)日：1996-04-30
申请号：US430116
申请日：1995-04-27
申请人： Leon C. Williams
发明人： Leon C. Williams
IPC分类号： B41J21/00 , G06T1/00 , G06T3/00 , G06T5/00 , G06T7/00 , G09G5/14 , H04N1/40 , G06K9/54 , G06K9/34 , H04N1/387
摘要： A method and apparatus for controlling the execution of image processing operations carried out on an array of image signals, the specific operations having been identified by a plurality of predefined windows. The windows are divided into a plurality of regions, the boundaries of which correspond to transitions from one window region to another. Each region defines an exclusive region within the array of image signals, and the image processing operations to be applied to the signals within the boundaries of that region. The image processing operations are selected by decoding an effect data word that is assigned to each pixel and which follows the pixel along the image processing path. The bits within the effect data word are not assigned individual significance which allows the effect data word, in most cases, to maintain the same bit length even though additional image processing procedures or modules have been added to the image processing path. The apparatus is designed to efficiently manage the identification of regions while minimizing the bit length of the effect data word used to identify the image processing steps. The apparatus also provides flexibility of architecture design resulting in more efficient expansion of functions and easier modifications to existing functions.
摘要翻译： 一种用于控制对图像信号阵列执行的图像处理操作的执行的方法和装置，该特定操作已经被多个预定窗口识别。 窗口被分成多个区域，其边界对应于从一个窗口区域到另一个窗口区域的过渡。 每个区域在图像信号阵列内定义排他区域，并且将图像处理操作应用于该区域边界内的信号。 通过对分配给每个像素的效果数据字进行解码并沿着图像处理路径跟随像素来选择图像处理操作。 影响数据字中的位不被分配单独的显着性，即使在图像处理路径中附加了附加的图像处理过程或模块的情况下，也能够使效果数据字在大多数情况下保持相同的位长度。 该设备被设计为有效地管理区域的识别，同时最小化用于识别图像处理步骤的效果数据字的位长度。 该设备还提供架构设计的灵活性，从而更有效地扩展功能并更容易地修改现有功能。
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公开(公告)号：US4757389A
公开(公告)日：1988-07-12
申请号：US61745
申请日：1987-06-15
申请人： Raymond J. Clark , Leon C. Williams
发明人： Raymond J. Clark , Leon C. Williams
CPC分类号： H04N1/401
摘要： A raster input scanner in which a dither generator introduces a random error signal to artificially increase the calibration signal accuracy during calibration of the scanner.
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公开(公告)号：US4755813A
公开(公告)日：1988-07-05
申请号：US61749
申请日：1987-06-15
申请人： Leon C. Williams
发明人： Leon C. Williams
CPC分类号： G06T1/60 , H04N1/4055
摘要： A programmable screening circuit with memory for storing at each address location both a pixel screen value and the memory address of the screen value for the next pixel to be screened, and a control including a latch pair for separating data from each memory location addressed into a screen value for screening the pixel and an address for addressing the memory location for the next screen value.
摘要翻译： 一种具有存储器的可编程屏蔽电路，用于在每个地址位置处存储要屏蔽的下一个像素的像素屏幕值和屏幕值的存储器地址，以及包括用于将数据从每个存储器位置分离的锁存器对的控制， 用于筛选像素的屏幕值和用于寻址下一屏幕值的存储器位置的地址。
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公开(公告)号：US07058350B2
公开(公告)日：2006-06-06
申请号：US09683536
申请日：2002-01-16
申请人： Bing R. Hsieh , Ying-wei Lin , Leon C. Williams
发明人： Bing R. Hsieh , Ying-wei Lin , Leon C. Williams
IPC分类号： G03G15/00
CPC分类号： H04N1/00551 , H04N1/00519
摘要： A platen cover for an imaging device such as a copier or scanner includes a substrate and at least of portion of the surface of the substrate is coated with a fluorescent coating. Preferably, the substrate has a dark or black color. The dark color of the substrate substantially reduces or eliminates show through of an image on the backside of an original document when the platen cover is not exposed to a light source for imaging. At the same time, when holes or uneven borders are present in the original document, the fluorescent coating fluoresces upon exposure to the light source at these regions of the original document, making these portions appear white in the replicated image and thereby substantially reducing or eliminating the unsightly appearance of these portions as black portions in the replicated image.
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