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公开(公告)号：US20110243393A1
公开(公告)日：2011-10-06
申请号：US12749739
申请日：2010-03-30
IPC分类号： G06K9/00
CPC分类号： G06T7/0004 , G06T2207/20056 , G06T2207/30144
摘要： A method and apparatus are provided for evaluating the severity in a printed image of a repeating band print artifact. After electronically capturing the printed image, each of a plurality of patches taken from captured image is analysed to produce an artifact severity measure for the patch; an overall artifact severity value is then determined for the printed image from the patch severity measures. The analysis of each patch involves producing a spatial intensity profile across the patch substantially at right angles to an expected direction of extent of any repeating band print artifact present; a Fourier-related transform is then applied to the spatial intensity profile and the patch artifact severity measure generated by summing the resultant spatial frequency coefficients in a limited range about a frequency of interest.
摘要翻译： 提供了一种用于评估重复带打印伪像的打印图像中的严重性的方法和装置。 在电子捕获打印图像之后，分析从拍摄图像中取出的多个贴片中的每一个，以产生贴片的伪影强度测量; 然后根据补丁严重性度量确定打印图像的整体工件严重性值。 每个贴片的分析涉及产生跨越贴片的空间强度分布，其基本上与存在的任何重复带状印刷伪影的预期的程度方向成直角; 然后将傅里叶相关变换应用于空间强度分布和通过在关于感兴趣频率的有限范围内对所得到的空间频率系数进行求和而产生的斑块伪影强度测度。
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公开(公告)号：US08243998B2
公开(公告)日：2012-08-14
申请号：US12749739
申请日：2010-03-30
CPC分类号： G06T7/0004 , G06T2207/20056 , G06T2207/30144
摘要： A method and apparatus are provided for evaluating the severity in a printed image of a repeating band print artifact. After electronically capturing the printed image, each of a plurality of patches taken from captured image is analysed to produce an artifact severity measure for the patch; an overall artifact severity value is then determined for the printed image from the patch severity measures. The analysis of each patch involves producing a spatial intensity profile across the patch substantially at right angles to an expected direction of extent of any repeating band print artifact present; a Fourier-related transform is then applied to the spatial intensity profile and the patch artifact severity measure generated by summing the resultant spatial frequency coefficients in a limited range about a frequency of interest.
摘要翻译： 提供了一种用于评估重复带打印伪像的打印图像中的严重性的方法和装置。 在电子捕获打印图像之后，分析从拍摄图像中取出的多个贴片中的每一个，以产生贴片的伪影强度测量; 然后根据补丁严重性度量确定打印图像的整体工件严重性值。 每个贴片的分析涉及产生跨越贴片的空间强度分布，其基本上与存在的任何重复带状印刷伪影的预期的程度方向成直角; 然后将傅里叶相关变换应用于空间强度分布和通过在关于感兴趣频率的有限范围内对所得到的空间频率系数进行求和而产生的斑块伪影强度测度。
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3.发明授权Reducing side lobes within optical irradiance distributions used to selectively expose photosensitive surface 有权用于选择性曝光光敏表面的光学辐射分布中的旁瓣减少公开(公告)号：US08085289B1
公开(公告)日：2011-12-27
申请号：US12258092
申请日：2008-10-24
申请人： Dror Kella , Michael Plotkin , Shai Emanueli , Boris Aptekar , Haim Livne , Haim Vladomirski , David Kenney Towner
发明人： Dror Kella , Michael Plotkin , Shai Emanueli , Boris Aptekar , Haim Livne , Haim Vladomirski , David Kenney Towner
CPC分类号： B41J2/471 , B41J2/473 , G02B26/124 , G02B27/58
摘要： An optical beam is selectively output towards a scanner in accordance with image data for a scan line of an image. The optical beam has a beam irradiance distribution that is elliptical in shape. The optical beam passes through an aperture stop, ordinarily creating side lobes within a focus irradiance distribution of the optical beam. The scanner scans the optical beam to form the scan line on a photosensitive surface by selectively exposing positions along the scan line in accordance with image data. The optical beam is modified before it reaches the photosensitive surface to substantially remove the side lobes that have been created within the focus irradiance distribution and/or to substantially prevent the side lobes from being created within the focus irradiance distribution of the optical beam.
摘要翻译： 根据图像的扫描线的图像数据，选择性地向扫描仪输出光束。 光束具有椭圆形的光束辐照度分布。 光束通过孔径光阑，通常在光束的聚焦辐照度分布内产生旁瓣。 通过根据图像数据选择性地暴露沿着扫描线的位置，扫描仪扫描光束以在感光表面上形成扫描线。 光束在其到达感光表面之前被修改以基本上去除已经在聚焦辐照度分布内产生的旁瓣，和/或基本上防止在光束的聚焦辐照度分布内产生旁瓣。
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