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    • 51. 发明申请
    • Document processing system with improved image quality assurance
    • 文件处理系统具有改进的图像质量保证
    • US20050243379A1
    • 2005-11-03
    • US10837344
    • 2004-04-30
    • Robert KleinCraig LapanGeorge Reasoner
    • Robert KleinCraig LapanGeorge Reasoner
    • G06K15/00G07F19/00
    • G06Q20/042G06Q20/1085G07F19/202Y10S707/99931Y10S707/99937Y10S707/99945
    • A document processing system comprising an image capture subsystem for capturing selected image metrics and at least one image rendition from a plurality of documents and for determining if at least one of the selected image metrics for any of the at least one image rendition does not successfully compare against preselected image quality metric threshold values. An image quality flag is generated for any of the at least one image rendition if it does not successfully compare, and a record entry for each imaged document having at least one flagged image rendition is created in an image quality flag file. An image index file for individually accessing the image renditions is modified to include a reference to the corresponding image quality flag file record entry The document processing system may optionally compare selected document metrics against preselected document metrics in a similar manner. Image defects in the plurality of documents can be identified by examining the record entries in the image quality flag file.
    • 一种文档处理系统,包括用于从多个文档捕获所选择的图像度量和至少一个图像再现的图像捕获子系统,并且用于确定所述至少一个图像再现中的任一个的所选图像度量中的至少一个是否未成功比较 针对预选图像质量度量阈值。 如果没有成功比较,则生成用于至少一个图像再现的任何图像质量标记,并且在图像质量标记文件中创建具有至少一个标记图像再现的每个成像文档的记录条目。 用于单独访问图像再现的图像索引文件被修改为包括对相应图像质量标志文件记录条目的引用。文档处理系统可以可选地以类似的方式将所选择的文档度量与预先选择的文档度量进行比较。 可以通过检查图像质量标志文件中的记录条目来识别多个文档中的图像缺陷。
    • 53. 发明授权
    • Parallel pipelined image processor
    • 并行流水线图像处理器
    • US5420941A
    • 1995-05-30
    • US123531
    • 1993-09-17
    • Joseph M. CapoRobert D'AoustDebora Y. GrosseRobert KleinRavi K. NigamGeorge E. Reasoner, Jr.David C. Williams
    • Joseph M. CapoRobert D'AoustDebora Y. GrosseRobert KleinRavi K. NigamGeorge E. Reasoner, Jr.David C. Williams
    • G06T1/20G06K9/60
    • G06T1/20
    • A pipelined image processor generates an image of the information contained on first and second portions of a document. The pipelined image processor includes a first pipe for processing information contained on the first portion of the document, and second pipe for processing information contained on the second portion of the document. The pipes receive the output from two camera assemblies which are used for generating an electrical signal in response to information contained on the document, an image digitizer for generating digitized information from the electrical signal by the means for generating an electrical signal. In addition, both pipes also include a resequencer for generating resequenced information from the digitized information, as well as an image processor for generating processed information from the resequenced information. Finally, the first and second pipes include a transposer/compressor assembly for generating transposed and compressed information from the processed information, and a compressed data buffer for storing the transposed and compressed information.
    • 流水线图像处理器生成包含在文档的第一和第二部分上的信息的图像。 流水线图像处理器包括用于处理包含在文档的第一部分上的信息的第一管道和用于处理包含在文档的第二部分上的信息的第二管道。 管道接收来自两个照相机组件的输出,这些照相机组件用于响应于文档中包含的信息而产生电信号,图像数字转换器用于通过用于产生电信号的装置从电信号产生数字化信息。 此外,两个管道还包括用于从数字化信息生成可重新排序的信息的再同步器,以及用于从重新排序的信息产生处理的信息的图像处理器。 最后,第一和第二管道包括用于从经处理的信息产生转置和压缩信息的转移器/压缩机组件,以及用于存储转置和压缩信息的压缩数据缓冲器。
    • 54. 发明授权
    • Method for background suppression in an image data processing system
    • 图像数据处理系统背景抑制方法
    • US5157740A
    • 1992-10-20
    • US653403
    • 1991-02-07
    • Robert KleinKaren A. WildsMichael Higgins-LuthmanDavid C. Williams
    • Robert KleinKaren A. WildsMichael Higgins-LuthmanDavid C. Williams
    • G06K9/38
    • G06K9/38G06K2209/01
    • A digital image preprocessing method for eliminating background patterns and scenes from digitized gray level document image data. The method accepts multi-gray level image data as input and produces a gray level output image containing a "white" background. Document image backgrounds are eliminated (or suppressed) by computing a separate (and typically different) threshold value for each gray level pixel of the original document image. Input image pixels whose gray level is greater (brighter) than the threshold value are assumed to be background picture data and are modified to be "white" pixels in the output image. The pixel threshold value is determined dynamically pixel-to-pixel based on gray level pixel data observed within the input image. Additionally, the pixel threshold can be automatically controlled to insure retention of written and/or printed information present in the input image. Threshold control is accomplished by specifying a print contrast signal (PCS) parameter to the image preprocessing method. Documents which might use this preprocessing technique include, but are not limited to, bank checks, remittance documents, charge card slips, deposit slips and similar type financial documents.
    • 一种用于从数字化灰度文档图像数据中消除背景图案和场景的数字图像预处理方法。 该方法接受多灰度级图像数据作为输入,并产生包含“白色”背景的灰度级输出图像。 通过为原始文档图像的每个灰度级像素计算单独的(并且通常不同的)阈值来消除(或抑制)文档图像背景。 其灰度比阈值大(亮度)的输入图像像素被假设为背景图像数据,并且在输出图像中被修改为“白色”像素。 基于输入图像中观察到的灰度级像素数据,动态地像素到像素确定像素阈值。 此外,可以自动控制像素阈值,以确保输入图像中存在的写入和/或打印信息的保留。 通过为图像预处理方法指定打印对比度信号(PCS)参数来实现阈值控制。 可能使用这种预处理技术的文件包括但不限于银行支票,汇款单,收费卡单,存单和类似类型的财务文件。