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    IMAGE SCANNER
    1.
    发明申请
    IMAGE SCANNER 审中-公开

    公开(公告)号：US20190191054A1

    公开(公告)日：2019-06-20

    申请号：US16216050

    申请日：2018-12-11

    申请人： BROTHER KOGYO KABUSHIKI KAISHA

    发明人： Takashi MATSUMI

    IPC分类号： H04N1/401 ,  H04N1/00

    CPC分类号： H04N1/401 ,  H04N1/00551 ,  H04N1/00835 ,  H04N1/00997

    摘要： A circuit acquires, as white correction data, read image data generated by reading an image of a reference member when light of each of three colors of a light source is sequentially emitted to the reference member; acquires, as original document image data, the read image data generated by moving the image sensor and by reading, with an image sensor, an image of an original document; determines, as an original document non-existence position, a position of a pixel at which all of the original document image red, green, and blue data have a same value; converts the original document image data to output image data by performing shading correction on the original document image data based on white correction data; and replaces the output image data at the original document non-existence position with a value closer to data indicative of white color than a value of the output image data.

    IMAGE SCANNING APPARATUS
    2.
    发明申请
    IMAGE SCANNING APPARATUS 有权
    图像扫描设备

    公开(公告)号：US20160134781A1

    公开(公告)日：2016-05-12

    申请号：US14932149

    申请日：2015-11-04

    申请人： BROTHER KOGYO KABUSHIKI KAISHA

    发明人： Tetsuya KATO ,  Taiki YAMANO ,  Takashi MATSUMI ,  Shuichi SUNAKO

    IPC分类号： H04N1/407 ,  H04N1/60

    CPC分类号： H04N1/4097 ,  H04N1/4076

    摘要： An image scanning apparatus, comprising: a gray reference member; a scanning unit; a signal conversion unit; a controller configured to: calculate white and black difference data of one line by subtracting first black data of one line from white data of one line; calculate a white and black difference maximum value and obtain a particular pixel position corresponding to the white and black difference maximum value; calculate light gray black difference data of one line by subtracting second black data of one line from light gray data of one line; calculate a gray white ratio by dividing the white and black difference maximum value at the particular pixel position by the light gray black difference data at the particular pixel position; and calculate reference data of one line by multiplying light gray data of one line by the gray white ratio.

    摘要翻译： 一种图像扫描装置，包括：灰色参考构件; 扫描单元; 信号转换单元; 控制器，被配置为：通过从一行的白色数据中减去一行的第一黑色数据来计算一行的白色和黑色差异数据; 计算白色和黑色差异最大值，并获得对应于白色和黑色差异最大值的特定像素位置; 通过从一行的浅灰色数据中减去一行的第二黑色数据来计算一行的浅灰黑色差异数据; 通过将特定像素位置处的白色和黑色差异最大值除以特定像素位置处的浅灰色黑色差异数据来计算灰色白色比例; 并通过将一行的灰度数据乘以灰白比例来计算一行的参考数据。