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11 条记录 (耗时 0.032 秒)

    Descreening and detail enhancement for scanned documents
    3.
    发明申请
    Descreening and detail enhancement for scanned documents 审中-公开
    扫描文档的筛选和细节增强

    公开(公告)号：US20070146794A1

    公开(公告)日：2007-06-28

    申请号：US11317180

    申请日：2005-12-23

    申请人： Mohamed Ahmed ,  Steven Weed

    发明人： Mohamed Ahmed ,  Steven Weed

    IPC分类号： G06K15/00

    CPC分类号： G06K15/02 ,  G06K15/1822 ,  H04N1/405

    摘要： A method and apparatus for processing a digital image to reduce moiré artifacts while preserving or improving detailed features. Pixels may be categorized as halftone and/or detail pixels and filtered accordingly. A pixel may be categorized as halftone if intensity values over a first window laid over that pixel vary by less than a first predetermined threshold. A descreen filter may be applied to halftone pixels. The remaining pixels that are not categorized as halftone pixels are analyzed as potential text elements. A PTE may be categorized as a detail pixel if intensity values over a second window laid over that pixel vary by more than a second predetermined threshold. The second window may be smaller than the first window. A sharpening filter may be applied to detail pixels.

    摘要翻译： 一种用于处理数字图像以减少莫尔文物同时保留或改进详细特征的方法和装置。 像素可以被分类为半色调和/或细节像素并相应地进行滤波。 如果放置在该像素上的第一窗口上的强度值改变小于第一预定阈值，则像素可以被分类为半色调。 去网格滤波器可以应用于半色调像素。 未分类为半色调像素的剩余像素被分析为潜在的文本元素。 如果布置在该像素上的第二窗口上的强度值改变多于第二预定阈值，则PTE可以被分类为细节像素。 第二窗口可以小于第一窗口。 锐化滤波器可以应用于细节像素。

    Method for shading an optical sensing element such as in a scanner
    4.
    发明申请
    Method for shading an optical sensing element such as in a scanner 有权
    用于遮蔽诸如扫描仪中的光学感测元件的方法

    公开(公告)号：US20050133742A1

    公开(公告)日：2005-06-23

    申请号：US10746611

    申请日：2003-12-22

    申请人： Stuart Daniel ,  Steven Weed

    发明人： Stuart Daniel ,  Steven Weed

    IPC分类号： G01N21/86 ,  G01V8/00 ,  H04N1/407

    CPC分类号： H04N1/4076

    摘要： Method for shading an optical sensing element of an optical sensor. Reference values are sequentially obtained of the output signal of the sensing element while relatively moving the optical sensor including the sensing element over a shading reference target. An edge detection filter is applied to each of the reference values obtained in step a) in determining if each of the reference values is or is not from an optical defect on the shading calibration strip. An average is calculated of the reference values obtained while excluding each of the reference values determined to be from any optical defect in calculating the average. The output signal of the sensing element is calibrated to the shading reference target using at least the calculated average.

    摘要翻译： 遮光光学传感器光学元件的方法。 在将包括感测元件的光学传感器相对移动到阴影参考目标上的同时，依次获得感测元件的输出信号的参考值。 边缘检测滤波器被应用于在步骤a）中获得的每个参考值，以确定每个参考值是否是来自着色校准条上的光学缺陷。 计算得到的参考值的平均值，同时排除在计算平均值时确定为任何光学缺陷的每个参考值。 感测元件的输出信号至少使用计算出的平均值校准到阴影参考目标。

    Apparatus and method for error diffusion with dither
    7.
    发明申请
    Apparatus and method for error diffusion with dither 有权
    用抖动误差扩散的装置和方法

    公开(公告)号：US20070041053A1

    公开(公告)日：2007-02-22

    申请号：US11206400

    申请日：2005-08-18

    申请人： Brian Cooper ,  Shaun Love ,  Steven Weed

    发明人： Brian Cooper ,  Shaun Love ,  Steven Weed

    IPC分类号： H04N1/40

    CPC分类号： H04N1/4053

    摘要： The input pixels in an image to be halftoned using error diffusion are dithered using a first type of passband dither. A second type of passband dither may also be added to a thresholding matrix used in halftoning. This second type of passband dither may be the same as the first type of passband dither. In such case, the second type of passband dither is a scaled multiple of the first type of passband dither. The halftoning process may be implemented in an application specific integrated circuit.

    摘要翻译： 使用误差扩散进行半色调的图像中的输入像素使用第一类型的通带抖动进行抖动。 第二种类型的通带抖动也可以被添加到在半色调中使用的阈值矩阵。 该第二类型的通带抖动可以与第一类型的通带抖动相同。 在这种情况下，第二类型的通带抖动是第一类型的通带抖动的缩放倍数。 半色调处理可以在专用集成电路中实现。

    Imaging device with memory device interface
    8.
    发明申请
    Imaging device with memory device interface 审中-公开
    具有存储设备接口的成像设备

    公开(公告)号：US20050182822A1

    公开(公告)日：2005-08-18

    申请号：US10781529

    申请日：2004-02-17

    申请人： Stuart Daniel ,  Steven Weed

    发明人： Stuart Daniel ,  Steven Weed

    IPC分类号： G06F9/445 ,  G06F15/167

    CPC分类号： G06F8/65

    摘要： An imaging device having a removable media interface. The removable media interface can read from and/or write to the removable media. The removable media interface can be directly integrated into the imaging device or in can be indirectly coupled to the imaging device. The removable media can be used to, among other things, update codes on the imaging device, configure the imaging device, provide user authentication, provide access to other information, such as an address book, encryption, personal preferences, and/or documents. Documents or other stored information can be written to the storage device at a remote location or written to the storage device at the imaging device.

    摘要翻译： 具有可移动介质接口的成像设备。 可移动介质接口可以读取和/或写入可移动介质。 可移动介质接口可以直接集成到成像设备中，或者可以间接地耦合到成像设备。 可移动介质可以用于成像设备上的更新代码，配置成像设备，提供用户认证，提供对诸如地址簿，加密，个人偏好和/或文档之类的其他信息的访问。 文档或其他存储的信息可以写入远程位置的存储设备，或者在成像设备处写入存储设备。

    Document segmentation for mixed raster content representation
    9.
    发明申请
    Document segmentation for mixed raster content representation 有权
    混合光栅内容表示的文档分割

    公开(公告)号：US20070150803A1

    公开(公告)日：2007-06-28

    申请号：US11318309

    申请日：2005-12-23

    申请人： Mohamed Ahmed ,  Tomasz Cholewo ,  Steven Weed

    发明人： Mohamed Ahmed ,  Tomasz Cholewo ,  Steven Weed

    IPC分类号： G06F17/00 ,  G06F15/00

    CPC分类号： H04N1/40062 ,  G06K9/00456

    摘要： In an array of pixels, a method for segmenting a selected pixel of the array between at least two layers including identifying an N-by-N window centered upon the selected pixel, evaluating at least one pixel in the N-by-N window to determine whether the selected pixel is a potential text element, identifying an M-by-M window centered upon the selected pixel when the evaluation determines that the selected pixel is a potential text element, wherein the M-by-M window is smaller than the N-by-N window, and determining whether the potential text element includes text by comparing at least two pixels within the M-by-M window.

    摘要翻译： 在像素阵列中，一种用于在至少两层之间分割阵列的所选像素的方法，包括识别以所选像素为中心的N×N窗口，评估N×N窗口中的至少一个像素 确定所选择的像素是否是潜在的文本元素，当所述评估确定所选择的像素是潜在文本元素时，识别以所选像素为中心的M-by-M窗口，其中所述M-by-M窗口小于 N-by-N窗口，并且通过比较M-by-M窗口内的至少两个像素来确定潜在文本元素是否包括文本。

    Systems and methods for selective dithering using pixel classification
    10.
    发明申请
    Systems and methods for selective dithering using pixel classification 审中-公开
    使用像素分类进行选择性抖动的系统和方法

    公开(公告)号：US20070070427A1

    公开(公告)日：2007-03-29

    申请号：US11465599

    申请日：2006-08-18

    申请人： Brian Cooper ,  Shaun Love ,  Steven Weed

    发明人： Brian Cooper ,  Shaun Love ,  Steven Weed

    IPC分类号： H04N1/405

    CPC分类号： H04N1/4053

    摘要： A method of selective dithering for enhancing the printability of an image, including receiving input pixels of an original input image and identifying the pixel classification of the input pixels, where the pixel classification characterizes each of the plurality of pixels based, at least in part, on their respective gray values. Thereafter, a dither input is added to at least some of the input pixels to generate a filtered and dithered image, where the strength of the dither input applied to generate the filtered and dithered image is based on the pixel classification. Full dither may be applied for smooth pixels, and little or no dither may be applied for edge pixels.

    摘要翻译： 一种用于增强图像的可印刷性的选择性抖动的方法，包括接收原始输入图像的输入像素并识别输入像素的像素分类，其中像素分类表征多个像素中的每一个，至少部分地， 各自的灰色值。 此后，将抖动输入添加到至少一些输入像素以产生滤波和抖动图像，其中施加以产生滤波和抖动图像的抖动输入的强度基于像素分类。 完全抖动可以应用于平滑像素，并且很少或没有抖动可以应用于边缘像素。