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1. 发明授权

US09432552B2 Image scanning apparatus 有权
标题翻译：图像扫描装置
公开(公告)号：US09432552B2
公开(公告)日：2016-08-30
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。

2. 发明授权

US10440225B2 Image scanner 有权
公开(公告)号：US10440225B2
公开(公告)日：2019-10-08
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： H04N1/00 , H04N1/401
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.

3. 发明申请

US20170034364A1 Image Reading Apparatus Configured to Read Document 有权
标题翻译：图像读取装置配置为读取文档
公开(公告)号：US20170034364A1
公开(公告)日：2017-02-02
申请号：US15220556
申请日：2016-07-27
申请人： Brother Kogyo Kabushiki Kaisha
发明人： Takashi Matsumi
IPC分类号： H04N1/00 , H04N1/403 , H04N1/028
CPC分类号： H04N1/00087 , H04N1/00013 , H04N1/00045 , H04N1/00068 , H04N1/00761 , H04N1/0281 , H04N1/02815 , H04N1/02845 , H04N1/401 , H04N1/403 , H04N1/4076 , H04N1/4078 , H04N2201/0094
摘要： An image reading apparatus includes a gray reference member, a reading unit, an adjusting unit, a calibration unit, a storage unit, and a control unit. The control unit is configured to execute a first preprocessing and a second preprocessing. The first preprocessing includes: acquiring first black data from one line worth of image data; acquiring white data; calculating white-black difference data; acquiring first light gray data; and calculating first light gray-black difference data. The second processing includes: acquiring second black data from the one line worth of the image data; acquiring second light gray data; calculating second light gray-black difference data; calculating a change ratio by dividing the second light gray-black difference data by the first light gray-black difference data; and calculating calibration data by multiplying the white-black difference data by the change ratio. Shading of the image data is calibrated in response to the calibration data.
摘要翻译：图像读取装置包括灰色参考构件，读取单元，调整单元，校准单元，存储单元和控制单元。控制单元被配置为执行第一预处理和第二预处理。第一个预处理包括：从一行图像数据获取第一个黑色数据; 获取白色数据; 计算白黑差异数据; 获取第一个浅灰色数据; 并计算第一浅灰黑差分数据。第二处理包括：从图像数据的一行获取第二黑色数据; 获取第二浅灰色数据; 计算第二浅灰黑差异数据; 通过将第二浅灰黑差分数据除以第一浅灰黑差分数据来计算变化率; 以及通过将所述白黑差分数据乘以所述变化比来计算校准数据。响应于校准数据校准图像数据的阴影。

4. 发明授权

US10021273B2 Image reading device provided with reader having lens array and light receiving elements and correcting output based on evaluation of reference member readings 有权
公开(公告)号：US10021273B2
公开(公告)日：2018-07-10
申请号：US15427181
申请日：2017-02-08
申请人： BROTHER KOGYO KABUSHIKI KAISHA
发明人： Takashi Matsumi
IPC分类号： H04N1/401 , H04N1/407 , H04N1/409 , H04N1/193 , H04N1/031 , H04N1/028 , H04N1/00
CPC分类号： H04N1/4097 , H04N1/00013 , H04N1/00045 , H04N1/00068 , H04N1/00909 , H04N1/02845 , H04N1/0312 , H04N1/0318 , H04N1/193 , H04N1/401 , H04N1/4078 , H04N2201/0081
摘要： In an image reading device, a controller is configured to perform: calculating a ratio between first and second reference data as evaluation data; designating a target light receiving element from a plurality of light receiving elements one by one sequentially; calculating average evaluation data of the target light receiving element by averaging the evaluation data of a second number of light receiving elements located at positions apart every predetermined distance equal to a length of a first number of consecutively arranged light receiving elements; setting an evaluation range of the target light receiving element by adding/subtracting a predetermined value to/from the average evaluation data; determining whether the evaluation data falls within the evaluation range; in response to determining that the evaluation data is out of the evaluation range, revising the second reference data of the target light receiving element; and generating correction data using the second reference data after revision.

5. 发明授权

US09742930B2 Image reading apparatus configured to read document 有权
公开(公告)号：US09742930B2
公开(公告)日：2017-08-22
申请号：US15220556
申请日：2016-07-27
申请人： Brother Kogyo Kabushiki Kaisha
发明人： Takashi Matsumi
IPC分类号： H04N1/00 , H04N1/028 , H04N1/403
CPC分类号： H04N1/00087 , H04N1/00013 , H04N1/00045 , H04N1/00068 , H04N1/00761 , H04N1/0281 , H04N1/02815 , H04N1/02845 , H04N1/401 , H04N1/403 , H04N1/4076 , H04N1/4078 , H04N2201/0094
摘要： An image reading apparatus includes a gray reference member, a reading unit, an adjusting unit, a calibration unit, a storage unit, and a control unit. The control unit is configured to execute a first preprocessing and a second preprocessing. The first preprocessing includes: acquiring first black data from one line worth of image data; acquiring white data; calculating white-black difference data; acquiring first light gray data; and calculating first light gray-black difference data. The second processing includes: acquiring second black data from the one line worth of the image data; acquiring second light gray data; calculating second light gray-black difference data; calculating a change ratio by dividing the second light gray-black difference data by the first light gray-black difference data; and calculating calibration data by multiplying the white-black difference data by the change ratio. Shading of the image data is calibrated in response to the calibration data.

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