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    • 9. 发明申请
    • Method for removing streaks from a scanned image
    • 从扫描图像中去除条纹的方法
    • US20070127840A1
    • 2007-06-07
    • US11295959
    • 2005-12-07
    • William GardnerDu-Yong Ng
    • William GardnerDu-Yong Ng
    • G06K9/40H04N1/409
    • G06K9/40H04N1/4097
    • A method for removing streaks from a scanned image includes performing a scanner light source OFF scan to generate a dark image having M rows of pixels and N+W columns of pixels; generating a line noise profile for the N columns of pixels of the dark image; performing a scanner light source ON scan to generate a regular image having M rows of pixels and N+W columns of pixels; processing the W columns of pixels of the regular image to detect a magnitude of the streak in the regular image; use the magnitude of the streak and the line noise profile to predict an amount of dark noise removal for each of the N columns of pixels of the regular image at the location of the streak; and subtracting the predicted amount of dark noise removal for each of the N columns of pixels from the respective N columns of pixels of the regular image.
    • 用于从扫描图像中去除条纹的方法包括执行扫描仪光源OFF扫描以产生具有M行像素和N + W列像素的暗图像; 生成暗图像的N列像素的线噪声分布; 执行扫描仪光源ON扫描以产生具有M行像素和N + W列像素的规则图像; 处理常规图像的W列的像素以检测正常图像中的条纹的大小; 使用条纹和线噪声分布的大小来预测在条纹位置处的常规图像的N列像素中的每一个的暗噪声去除量; 并从所述常规图像的各N列像素中减去所述N列像素中的每一个的暗噪声去除的预测量。