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1. 发明申请

WO2012041391A1 COMPENSATING FOR IMAGE SENSOR PROFILE VARIATIONS 审中-公开
标题翻译：补偿图像传感器轮廓变化
公开(公告)号：WO2012041391A1
公开(公告)日：2012-04-05
申请号：PCT/EP2010/064657
申请日：2010-10-01
申请人： CONTEX A/S , VERHAEGH, Gerard , PEDERSEN, Troels , NIELSEN, Jens Kærgaard , LARSEN, Lars Errebo
发明人： VERHAEGH, Gerard , PEDERSEN, Troels , LARSEN, Lars Errebo
IPC分类号： H04N1/193 , H04N1/401
CPC分类号： H04N1/00087 , H04N1/193 , H04N1/1934 , H04N1/401
摘要： Disclosed is a method of scanning a physical medium by an image scanner comprising a first image sensor having a plurality of image sensor elements that provide an image, and a first light source associated with the first image sensor, the method comprising: guiding light from the first light source towards a first group of image sensor element(s); recording a first light calibration value using the first group of image sensor element(s). The method further comprises repeating the above step by using a second group of image sensor element(s) thus resulting in a second light calibration value; generating a first compensation signal for image sensor elements positioned between the first and the second group of image sensor element(s) by processing the first and the second light calibration value together; compensating said image signals provided by the first image sensor using the first compensation signal.
摘要翻译：公开了一种通过图像扫描仪扫描物理介质的方法，该图像扫描器包括具有多个提供图像的图像传感器元件的第一图像传感器和与第一图像传感器相关联的第一光源，该方法包括：第一光源朝向第一组图像传感器元件; 使用第一组图像传感器元件记录第一光校正值。该方法还包括通过使用第二组图像传感器元件重复上述步骤，从而得到第二光校正值; 通过一起处理第一和第二光校准值来产生位于第一和第二组图像传感器元件之间的图像传感器元件的第一补偿信号; 使用第一补偿信号来补偿由第一图像传感器提供的图像信号。

2. 发明申请

WO2012041390A1 SIGNAL INTENSITY MATCHING OF IMAGE SENSORS 审中-公开
标题翻译：图像传感器的信号强度匹配
公开(公告)号：WO2012041390A1
公开(公告)日：2012-04-05
申请号：PCT/EP2010/064656
申请日：2010-10-01
申请人： CONTEX A/S , VERHAEGH, Gerard
发明人： VERHAEGH, Gerard
IPC分类号： H04N1/193
CPC分类号： H04N1/193 , H04N1/1903 , H04N1/1933 , H04N1/1934
摘要： Disclosed is a method of processing signals from a large-format scanner comprising a first and a second image sensor that provide respective image signals recorded at respective areas of a scanned medium, where a portion of the respective areas is recorded also by the other of the respective image sensors, whereby image data from overlapping and non-overlapping areas are present in the respective signals; the method comprising: determining a first and a second level of intensity from image signals from the first and the second image sensor at the overlapping area, respectively; determining a compensation value by processing the first level of intensity and the second level of intensity to determine a discrepancy between the level of intensities; applying compensation values to image data from overlapping and non- overlapping areas to provide compensated image data to compensate for a discrepancy between levels of intensity from the first and the second image sensor.
摘要翻译：公开了一种处理来自大格式扫描器的信号的方法，该大格式扫描器包括第一和第二图像传感器，其提供记录在扫描介质的相应区域处的相应图像信号，其中相应区域的一部分也由另一个各图像传感器，其中来自重叠区域和非重叠区域的图像数据存在于各个信号中; 该方法包括：分别在重叠区域从第一和第二图像传感器的图像信号确定第一和第二强度水平; 通过处理第一强度水平和第二强度水平来确定补偿值，以确定强度水平之间的差异; 将补偿值应用于来自重叠和非重叠区域的图像数据，以提供补偿图像数据，以补偿来自第一和第二图像传感器的强度级别之间的差异。

3. 发明申请

WO2012041389A1 TWO-DIMENSIONAL CALIBRATION OF IMAGE SENSOR ALIGNMENT IN OPTICAL SCANNERS 审中-公开
标题翻译：光学扫描仪中图像传感器对准的二维校准
公开(公告)号：WO2012041389A1
公开(公告)日：2012-04-05
申请号：PCT/EP2010/064654
申请日：2010-10-01
申请人： CONTEX A/S , VERHAEGH, Gerard
发明人： VERHAEGH, Gerard
IPC分类号： H04N1/19 , H04N1/387
CPC分类号： H04N1/00031 , H04N1/19 , H04N1/1903 , H04N1/193 , H04N1/1934 , H04N1/195 , H04N1/19584 , H04N1/3876
摘要： Disclosed is a method of processing image signals from a first and a second image sensor, both of a document scanner unit, where the first image sensor provides a first image, and the second image sensor provides a second image. The first and the second image are two-dimensional images wherein said first and second image are recorded at respective areas of a scanned medium, where a portion of the respective areas is recorded also by the other of the respective image sensors. Thereby image data from overlapping and non-overlapping areas are present in the first and the second image. The method comprises: correlating the first image with the second image, creating a correlation image and processing the correlation image to determine a displacement between the first and the second image. Consequently, a versatile calibration method is provided that can determine a displacement between the first and the second image in two dimensions.
摘要翻译：公开了一种处理来自第一图像传感器和第二图像传感器的图像信号的方法，其中第一图像传感器提供第一图像的文档扫描器单元和第二图像传感器提供第二图像。第一和第二图像是二维图像，其中所述第一和第二图像被记录在扫描介质的相应区域，其中各个区域的一部分也由相应图像传感器中的另一个记录。由此，来自重叠区域和非重叠区域的图像数据存在于第一和第二图像中。该方法包括：将第一图像与第二图像相关，创建相关图像并处理相关图像以确定第一图像和第二图像之间的位移。因此，提供了可以确定第一和第二图像在二维中的位移的通用校准方法。

4. 发明申请

WO2016000744A1 DISCRETE COLOUR MATCHING IN A DOCUMENT SCANNER 审中-公开
标题翻译：文件扫描仪中的离散色彩匹配
公开(公告)号：WO2016000744A1
公开(公告)日：2016-01-07
申请号：PCT/EP2014/063862
申请日：2014-06-30
申请人： CONTEX A/S
发明人： OVERGAARD, Poul , NISSEN, Peter , VERHAEGH, Gerard
IPC分类号： H04N1/401 , H04N1/48
CPC分类号： H04N1/1933 , H04N1/0405 , H04N1/1903 , H04N1/1917 , H04N1/401 , H04N1/48 , H04N1/60 , H04N2201/0081 , H04N2201/0414
摘要： A method and document scanner system for correcting image values recorded by an optical document scanner with multiple colour cameras (101,102,103) arranged in a staggered configuration with overlap scan areas (114,115) comprising: storing colour correction values mapped to respective colour index values; wherein a colour correction value is computed from a colour difference between a first colour value and a second colour value of the respective overlap sets; and correcting a third colour value which is a colour value from the second set of colour image values by a colour correction value which is looked up via a colour index value determined from the third colour value. Thereby colour variations among staggered cameras are corrected.
摘要翻译：一种用于校正由具有重叠扫描区域（114,115）的交错配置布置的多个彩色照相机（101,102,103）的由光学文档扫描器记录的图像值的方法和文档扫描仪系统，包括：存储映射到各个颜色索引值的颜色校正值; 其中根据各个重叠集的第一颜色值和第二颜色值之间的色差计算颜色校正值; 以及通过经由从第三颜色值确定的颜色指标值查找的颜色校正值来校正来自第二组彩色图像值的颜色值的第三颜色值。从而校正交错摄像机之间的颜色变化。

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