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    • 25. 发明申请
    • Method For Providing Image Illumination Calibration For An Imaging Apparatus
    • 为成像设备提供图像照明校准的方法
    • US20090153697A1
    • 2009-06-18
    • US11954754
    • 2007-12-12
    • Anthony Michael KingMark Eric Miller
    • Anthony Michael KingMark Eric Miller
    • H04N5/235
    • 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。