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    • 6. 发明授权
    • Method for providing image illumination calibration for an imaging apparatus
    • 用于为成像装置提供图像照明校准的方法
    • US07995114B2
    • 2011-08-09
    • US11954754
    • 2007-12-12
    • Anthony Michael KingMark Eric Miller
    • Anthony Michael KingMark Eric Miller
    • H04N5/235H01L27/00H01L1/42
    • H04N1/401H04N1/4076H04N5/3572H04N5/3655
    • A method for providing image illumination calibration includes: generating a plurality of images of a calibration target at a plurality of exposure levels, each image of the plurality of images being represented by a total pixel area; identifying a plurality of zones of the total pixel area, each zone of the plurality of zones corresponding to a particular image of the plurality of images at a particular exposure level of the plurality of exposure levels, with each zone representing a pixel sub-area that excludes saturated pixels; combining the plurality of zones for the plurality of images of the calibration target to generate a final calibration image; and generating a shading table to correct the final calibration image to obtain a uniform image of the calibration target over the total pixel area, the shading table including gain and offset values associated with each pixel of the total pixel area.
    • 一种用于提供图像照明校准的方法包括:以多个曝光级别生成校准目标的多个图像,所述多个图像中的每个图像由总像素区域表示; 识别所述总像素区域的多个区域,所述多个区域中的每个区域对应于所述多个曝光水平的特定曝光水平下的所述多个图像的特定图像,其中每个区域表示像素子区域, 排除饱和像素; 组合用于校准目标的多个图像的多个区域以生成最终校准图像; 以及生成阴影表以校正最终校准图像以在整个像素区域上获得校准目标的均匀图像,该着色表包括与总像素区域的每个像素相关联的增益和偏移值。
    • 7. 发明授权
    • System and method for demarcating media sheets during a scan operation
    • 在扫描操作期间划分介质片的系统和方法
    • US08253990B2
    • 2012-08-28
    • US12540763
    • 2009-08-13
    • Anthony Michael KingMark E. Miller
    • Anthony Michael KingMark E. Miller
    • H04N1/04
    • H04N1/00795H04N1/00551H04N1/00816H04N1/10H04N2201/0081
    • A scanner for demarcating each media sheet of a multiplicity of media sheets and a method thereof. The scanner includes a platen, a scanlid, an illuminating mechanism and a scanhead. The platen accommodates the multiplicity of media sheets. The scanlid is pivotally coupled to the platen and provides a background for scanning the multiplicity of media sheets. The illuminating mechanism is coupled to the scanlid and is activated for illuminating the background. The scanhead scans the multiplicity of media sheets. A single background image of the multiplicity of media sheets is captured by activating the illuminating mechanism during scanning. A single foreground image of the multiplicity of media sheets is captured by deactivating the illuminating mechanism during scanning. Edges of each media sheet are detected in the background image, and are combined with the foreground image to extract content thereof.
    • 用于划分多个介质片的每个介质片的扫描器及其方法。 扫描仪包括压板,扫描仪,照明机构和扫描头。 压板容纳多种介质片。 扫描镜可枢转地联接到压板并提供用于扫描多个介质片的背景。 照明机构耦合到扫描仪,并被激活以照亮背景。 扫描头扫描多张介质片。 通过在扫描期间激活照明机构来捕获多张介质片的单个背景图像。 通过在扫描期间停用照明机构来捕获多张介质片的单个前景图像。 在背景图像中检测每个介质片的边缘,并与前景图像组合以提取其内容。