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公开(公告)号：US07636492B2
公开(公告)日：2009-12-22
申请号：US10376888
申请日：2003-02-28
申请人： Ron P. Maurer
发明人： Ron P. Maurer
CPC分类号： H04N1/4095
摘要： A group of pixels of a digital image is processed to reduce bleed-through. The processing includes generating an upper bound for each pixel of the group; and taking a weighted average of the upper bound and original pixel intensity for each pixel of the group.
摘要翻译： 处理数字图像的一组像素以减少渗透。 该处理包括生成该组的每个像素的上界; 并对该组的每个像素取上限和原始像素强度的加权平均值。
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公开(公告)号：US07116446B2
公开(公告)日：2006-10-03
申请号：US10377197
申请日：2003-02-28
申请人： Ron P. Maurer
发明人： Ron P. Maurer
CPC分类号： H04N1/40075 , H04N1/409
摘要： Processing of a pixel in a digital image includes performing inverse halftoning on the pixel with respect to a local pixel neighborhood; and performing selective sharpening on the inverse halftoned pixel with respect to the local pixel neighborhood.
摘要翻译： 数字图像中的像素的处理包括相对于局部像素邻域在像素上执行反半色调; 并且对相对于局部像素邻域的逆半色调像素执行选择性锐化。
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公开(公告)号：US07050650B2
公开(公告)日：2006-05-23
申请号：US10087584
申请日：2002-02-28
申请人： Ron P. Maurer , A. Marie Vans , Carl Staelin , Kristin M. Smith
发明人： Ron P. Maurer , A. Marie Vans , Carl Staelin , Kristin M. Smith
IPC分类号： G06K9/40
CPC分类号： H04N1/4095
摘要： A system and method of removing background noise from a digital image of a scanned document is described. The system and method is a reversible background noise removal technique that allows a user to select whether background noise is removed or not. In addition, since the present invention divides the background noise removal operations into a two phase process, the overall efficiency of the system and method are significantly improved.
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公开(公告)号：US08615142B2
公开(公告)日：2013-12-24
申请号：US10377523
申请日：2003-02-28
申请人： Ron P. Maurer
发明人： Ron P. Maurer
IPC分类号： G06K9/40
CPC分类号： G06T5/008 , G06T2207/20012
摘要： Processing of a pixel of a digital image includes mapping intensity of the pixel as a smooth, non-linear continuous function of the intensity and minimum and maximum intensities of a local pixel neighborhood of the pixel.
摘要翻译： 数字图像的像素的处理包括将像素的映射强度作为像素的局部像素邻域的强度和最小和最大强度的平滑非线性连续函数。
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5.发明授权Selective smoothing and sharpening of images by generalized unsharp masking 有权通过广义钝化掩蔽进行图像的选择性平滑和锐化公开(公告)号：US06980696B2
公开(公告)日：2005-12-27
申请号：US10683148
申请日：2003-10-09
申请人： Ron P. Maurer
发明人： Ron P. Maurer
摘要： A method of deriving from an existing selective image smoothing filter either a corresponding filter for selective image sharpening, or a corresponding filter for both selective image smoothing and selective image sharpening. The selective sharpening filter can be implemented quickly by using implementations of the existing selective smoothing filter and a derived matching non-selective smoothing filter as black boxes and combining their outputs in a simple manner. Alternatively, the derived selective sharpening filter can be implemented by inlining the combination of the implementations of the existing selective smoothing.
摘要翻译： 从现有的选择性图像平滑滤波器导出用于选择性图像锐化的相应滤波器或用于选择性图像平滑和选择性图像锐化的相应滤波器的方法。 选择性锐化滤波器可以通过使用现有的选择性平滑滤波器和导出的匹配非选择性平滑滤波器的实现作为黑盒并以简单的方式组合它们的输出来快速实现。 或者，可以通过内联现有选择性平滑化的实现的组合来实现导出的选择性锐化滤波器。
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6.发明授权Method for enhancing compressibility and visual quality of scanned document images 失效提高扫描文件图像压缩率和视觉质量的方法公开(公告)号：US06731821B1
公开(公告)日：2004-05-04
申请号：US09675270
申请日：2000-09-29
申请人： Ron P. Maurer , Danny Barash
发明人： Ron P. Maurer , Danny Barash
IPC分类号： G06K936
CPC分类号： G06K9/40 , G06K9/44 , G06K2209/01 , H04N1/409
摘要： A system and method of image processing for smoothing, denoising, despeckling and sharpening scanned document images which is performed prior to a compression. The scanned image is selectively smoothed by anisotropic diffusion filtering in a single iteration with a 3×3 kernel, which provides denoising, edge-preserving smoothing. The smoothed image data is then selectively sharpened using variable contrast mapping that provides overshoot-free variable-sharpening and despeckling. Image quality is improvides while increasing compressibility of the image.
摘要翻译： 用于在压缩之前执行的扫描文档图像的平滑，去噪，去斑和锐化的图像处理系统和方法。 扫描图像通过各向异性扩散滤波在3x3内核的单次迭代中进行选择性平滑，提供去噪，边缘保持平滑。 然后使用可提供无冲击可变锐化和去斑纹的可变对比度映射来选择性地削化平滑的图像数据。 图像质量是提高图像的压缩性。
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7.发明授权Selective smoothing and sharpening of images by generalized unsharp masking 有权通过广义钝化掩蔽进行图像的选择性平滑和锐化公开(公告)号：US06665448B1
公开(公告)日：2003-12-16
申请号：US09676201
申请日：2000-09-29
申请人： Ron P. Maurer
发明人： Ron P. Maurer
IPC分类号： G06T550
摘要： A method of deriving from an existing selective image smoothing filter either a corresponding filter for selective image sharpening, or a corresponding filter for both selective smoothing and selective image sharpening. The selective sharpening filter can be implemented quickly by using implementations of the existing selective smoothing filter and a derived matching non-selective smoothing filter as black boxes and combining their outputs in a simple manner. Alternatively, the derived selective sharpening filter can be implemented by inlining the combination of the implementations of the existing selective smoothing.
摘要翻译： 从现有的选择性图像平滑滤波器导出用于选择性图像锐化的相应滤波器或用于选择性平滑和选择性图像锐化的相应滤波器的方法。 选择性锐化滤波器可以通过使用现有的选择性平滑滤波器和导出的匹配非选择性平滑滤波器的实现作为黑盒并以简单的方式组合它们的输出来快速实现。 或者，可以通过内联现有选择性平滑化的实现的组合来实现导出的选择性锐化滤波器。
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8.发明授权Method including lossless compression of luminance channel and lossy compression of chrominance channels 有权方法包括亮度通道的无损压缩和色度通道的有损压缩公开(公告)号：US06650773B1
公开(公告)日：2003-11-18
申请号：US09676867
申请日：2000-09-29
IPC分类号： G06K936
CPC分类号： H04N1/64
摘要： Compression of a digital image is performed by bit-depth truncating a luminance channel of the digital image and performing lossless compression on the bit-depth truncated luminance channel; and performing lossy compression on chrominance channels of the digital image.
摘要翻译： 数字图像的压缩通过对数字图像的亮度通道进行位深度截断来执行，并对比特深度截断亮度信道执行无损压缩; 并对数字图像的色度通道进行有损压缩。
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公开(公告)号：US06915024B1
公开(公告)日：2005-07-05
申请号：US09676011
申请日：2000-09-29
申请人： Ron P. Maurer
发明人： Ron P. Maurer
摘要： Image sharpening is performed by applying variable contrast stretching to pixels of interest in a digital image. For each pixel of interest, the amount of contrast stretching is a function of minimum and maximum intensity values in a local pixel neighborhood.
摘要翻译： 通过对数字图像中感兴趣的像素应用可变对比度拉伸来执行图像锐化。 对于感兴趣的每个像素，对比度拉伸的量是局部像素邻域中最小和最大强度值的函数。
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10.发明授权Reduction of chromatic bleeding artifacts in images containing subsampled chrominance values 失效减少含有二次采样色度值的图像中的色彩消失伪像公开(公告)号：US07623706B1
公开(公告)日：2009-11-24
申请号：US09676866
申请日：2000-09-29
申请人： Ron P. Maurer
发明人： Ron P. Maurer
摘要： Chromatic bleeding artifacts in a digital image are reduced by modifying chrominance values of at least some pixels in the digital image. The chrominance values are modified according to luminance values and chromatic dynamic range.
摘要翻译： 通过修改数字图像中的至少一些像素的色度值来减少数字图像中的色彩瑕疵。 色度值根据亮度值和色温动态范围进行修改。
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