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    • 63. 发明申请
    • Detecting skew angle in a scanned image
    • 检测扫描图像中的歪斜角度
    • US20060039628A1
    • 2006-02-23
    • US10943310
    • 2004-09-17
    • Xing LiTerri Clingerman
    • Xing LiTerri Clingerman
    • G06K9/36
    • H04N1/3873H04N1/3878
    • Detecting skew and determining skew angle using the front of a document by determining background-to-document transitions. Incoming scanlines are interval sampled in the fast scan direction every nth pixel. The samples are collected and organized into a two dimension array comprised of scanline based rows and interval based columns. The collected and organized samples are analyzed by intervals to determine a scanline (row) where a specified sampling condition exceeds predetermined threshold. The corresponding row-interval point forms a background-to-medium transition point of the edge of a document. When two or more background-to-medium transition points are found from different intervals the skew angle can be determined using linear regression.
    • 通过确定背景到文档的转换,使用文档的正面检测偏斜和确定偏斜角。 进入的扫描线是每第n个像素在快速扫描方向进行间隔采样。 样本被收集并组织成由基于扫描线的行和基于间隔的列组成的二维阵列。 收集和组织的样本以间隔进行分析,以确定指定采样条件超过预定阈值的扫描线(行)。 相应的行间隔点形成文档边缘的背景到中间的转换点。 当从不同的间隔发现两个或多个背景到中间的转换点时,可以使用线性回归来确定偏斜角。
    • 64. 发明授权
    • Automatic background detection of scanned documents
    • 扫描文件的自动背景检测
    • US06674899B2
    • 2004-01-06
    • US09739405
    • 2000-12-18
    • Ramesh NagarajanXing LiFrancis K. Tse
    • Ramesh NagarajanXing LiFrancis K. Tse
    • G06K900
    • H04N1/4074H04N1/38
    • A method for generating a background statistics that distinguishes between gray level information from document areas and non-document areas. The method includes determining a full page background statistics from selected pixels within a scanned area; determining a sub-region background statistics from selected pixels within a sub-region of the scanned area; determining if the sub-region background statistics corresponds to image data from a non-document area; determining if the full page background statistics is corrupted; and generating a validated full page background statistics if the full page background statistics is corrupted.
    • 一种用于生成从文档区域和非文档区域区分灰度级信息的背景统计信息的方法。 该方法包括从扫描区域内的所选像素确定全页背景统计; 从扫描区域的子区域内的所选像素确定子区域背景统计; 确定子区域背景统计是否对应于来自非文档区域的图像数据; 确定全页背景统计信息是否已损坏; 并且如果整页背景统计信息已损坏,则生成经过验证的全页背景统计信息。
    • 67. 发明申请
    • PIEZOELECTIRC ENERGY HARVESTING SYSTEM WITH FREQUENCY MISMATCH TOLERANCE
    • 具有频率误差容限的PIEZOELECTIRC能量采集系统
    • US20160204717A1
    • 2016-07-14
    • US14623025
    • 2015-02-16
    • Xing LiYong FengBin Shao
    • Xing LiYong FengBin Shao
    • H02N2/18
    • H02N2/181
    • An impedance matching circuit is provided for use with a piezotransducer that includes a parasitic capacitor comprising: an inductor coupled in parallel with the parasitic capacitor; a peak and valley detection circuit configured to detect output voltage waveform peaks and valleys; a first switch circuit configured to bias flip the output voltage waveform at a selectable first time relative to a detected peak and at a selectable first time relative to a detected valley; a second switch circuit configured to couple the inductor to the energy storage circuit at a selectable second time following each output voltage bias flip; an energy monitoring circuit to provide an indication of energy flow from the inductor to the energy storage circuit following each output voltage bias flip; and a maximum power point tracking (MPPT) circuit configured to select the first time and the second time based at least in part upon the indicated energy flow.
    • 阻抗匹配电路被提供用于包括寄生电容器的压电传感器,该寄生电容器包括:与寄生电容器并联耦合的电感器; 峰值谷检测电路,被配置为检测输出电压波形峰谷; 第一开关电路,被配置为将输出电压波形相对于检测到的峰值在可选择的第一时间相对于相对于检测到的谷值在可选择的第一时间进行偏置翻转; 第二开关电路,被配置为在每个输出电压偏置翻转之后的可选择的第二时间将所述电感器耦合到所述能量存储电路; 能量监测电路,用于在每个输出电压偏置翻转之后提供从电感器到能量存储电路的能量流的指示; 以及配置为至少部分地基于所指示的能量流来选择第一时间和第二时间的最大功率点跟踪(MPPT)电路。
    • 70. 发明授权
    • Billing method for copy path images
    • 复制路径图像的计费方法
    • US08914311B2
    • 2014-12-16
    • US13335387
    • 2011-12-22
    • Amal Z. MalikXing LiClara Cuciurean-Zapan
    • Amal Z. MalikXing LiClara Cuciurean-Zapan
    • G06F17/00
    • G06Q40/00
    • Disclosed is a processor-implemented method for processing image data of a document using an apparatus. The processor determines pixel classifications and counts for each classification, classifies the image, selects a billing tier for which to bill the image, determines counts of pixels for marking to output the image (e.g., in device dependent space), and then can adjust from the selected billing tier to a different billing tier based on the image classification (e.g., and/or using determined counts of pixels for each classification and determined counts of pixels for marking). Counts of pixels can be adjusted using an offset, or calculated using a combination of the determined counts (e.g., combining counts from both independent and dependent spaces). By adjusting the tier at which to bill data, more accurate billing can be implemented for documents with contone or grayscale image data, for example, with greater customer satisfaction.
    • 公开了一种处理器实现的方法,用于使用装置处理文档的图像数据。 处理器确定每个分类的像素分类和计数,对图像进行分类,选择用于对图像收费的计费层,确定用于标记输出图像的像素数(例如,在设备相关空间中),然后可以从 基于图像分类(例如和/或使用确定的每个分类的像素计数和确定的用于标记的像素的计数)的不同计费层的所选计费层。 可以使用偏移来调整像素的数量,或者使用确定的计数的组合计算(例如,从独立空间和从属空间组合计数)来计算像素数。 通过调整账单数据的层次,可以对具有连字符或灰度图像数据的文档实现更准确的计费,例如,具有更大的客户满意度。