公开(公告)号：US08390890B2

公开(公告)日：2013-03-05

申请号：US12899245

申请日：2010-10-06

申请人： Jing-Ming Guo ,  Yun-Fu Liu

发明人： Jing-Ming Guo ,  Yun-Fu Liu

IPC分类号： H04N1/405 ,  G06K9/00

CPC分类号： H04N1/4052

摘要： A halftone image generation method used in a system including an image input module and a halftoning processing module for generating a halftone image is disclosed. First, an original image is received by the image input module and a dot diffusion process is performed to the original image to generate the halftone image using a first class matrix with a first size and a corresponding first diffused weighting matrix with a first diffused area size, wherein the first class matrix indicates a processing order of the dot diffusion process and the first class matrix with the first size, the first diffused area size and the corresponding first diffused weighting matrix with the first diffused area size are optimized results determined in advance by the halftoning processing module according to class matrixes of different sizes and diffused areas of different sizes.

摘要翻译： 公开了一种在包括用于产生半色调图像的图像输入模块和半色调处理模块的系统中使用的半色调图像生成方法。 首先，由图像输入模块接收原始图像，并且对原始图像执行点扩散处理，以使用具有第一尺寸的第一等级矩阵和具有第一扩散区域尺寸的相应的第一扩散加权矩阵来生成半色调图像 其中，所述第一类矩阵表示所述点扩散处理的处理顺序，具有第一大小的第一等级矩阵，第一扩散区域大小和具有第一扩散区域大小的对应的第一扩散加权矩阵是由 根据不同大小的类矩阵和不同大小的扩散区域的半色调处理模块。

公开(公告)号：US20110142340A1

公开(公告)日：2011-06-16

申请号：US12899245

申请日：2010-10-06

申请人： Jing-Ming GUO ,  Yun-Fu LIU

发明人： Jing-Ming GUO ,  Yun-Fu LIU

IPC分类号： G06K9/00

CPC分类号： H04N1/4052

摘要： A halftone image generation method used in a system including an image input module and a halftoning processing module for generating a halftone image is disclosed. First, an original image is received by the image input module and a dot diffusion process is performed to the original image to generate the halftone image using a first class matrix with a first size and a corresponding first diffused weighting matrix with a first diffused area size, wherein the first class matrix indicates a processing order of the dot diffusion process and the first class matrix with the first size, the first diffused area size and the corresponding first diffused weighting matrix with the first diffused area size are optimized results determined in advance by the halftoning processing module according to class matrixes of different sizes and diffused areas of different sizes.

摘要翻译： 公开了一种在包括用于产生半色调图像的图像输入模块和半色调处理模块的系统中使用的半色调图像生成方法。 首先，由图像输入模块接收原始图像，并且对原始图像执行点扩散处理，以使用具有第一尺寸的第一等级矩阵和具有第一扩散区域尺寸的相应的第一扩散加权矩阵来生成半色调图像 其中，所述第一类矩阵表示所述点扩散处理的处理顺序，具有第一大小的第一等级矩阵，第一扩散区域大小和具有第一扩散区域大小的对应的第一扩散加权矩阵是由 根据不同大小的类矩阵和不同大小的扩散区域的半色调处理模块。

公开(公告)号：US20100033764A1

公开(公告)日：2010-02-11

申请号：US12187546

申请日：2008-08-07

申请人： Jing-ming Guo ,  Yun-fu Liu

发明人： Jing-ming Guo ,  Yun-fu Liu

IPC分类号： H04N1/405

CPC分类号： H04N1/4053

摘要： The present invention discloses a digital halftoning method. The method comprises steps of: (a1) dividing an original image into non-overlapping blocks; (a2) obtaining a Least-Mean-Square trained (LMS-trained) filter by comparing at least a training image and a halftone result corresponding to the training image (a3) optimizing a class matrix with the LMS-trained filter, which involves the diffused area and the diffused weightings; and (a4) processing the non-overlapping blocks by performing a dot diffusion procedure with the optimized class matrix and the diffused weightings to generate a halftone image corresponding to the original image. A detailed class matrix optimizing method as in the above-mentioned step (a3) is also disclosed.

摘要翻译： 本发明公开了一种数字半色调方法。 该方法包括以下步骤：（a1）将原始图像划分成非重叠块; （a2）通过将至少训练图像和对应于训练图像（a3）的半色调结果进行比较来获得最小均方训练（LMS训练）滤波器，该训练图像（a3）与LMS训练的滤波器优化类矩阵，其涉及 扩散面积和扩散重量; 和（a4）通过利用优化的类矩阵和扩散加权执行点扩散过程来生成与原始图像相对应的半色调图像来处理非重叠块。 还公开了如上述步骤（a3）中的详细的类矩阵优化方法。

公开(公告)号：US08077355B2

公开(公告)日：2011-12-13

申请号：US12187546

申请日：2008-08-07

申请人： Jing-ming Guo ,  Yun-fu Liu

发明人： Jing-ming Guo ,  Yun-fu Liu

IPC分类号： G06K15/00

CPC分类号： H04N1/4053

摘要： The present invention discloses a digital halftoning method. The method comprises steps of: (a1) dividing an original image into non-overlapping blocks; (a2) obtaining a Least-Mean-Square trained (LMS-trained) filter by comparing at least a training image and a halftone result corresponding to the training image (a3) optimizing a class matrix with the LMS-trained filter, which involves the diffused area and the diffused weightings; and (a4) processing the non-overlapping blocks by performing a dot diffusion procedure with the optimized class matrix and the diffused weightings to generate a halftone image corresponding to the original image. A detailed class matrix optimizing method as in the above-mentioned step (a3) is also disclosed.

摘要翻译： 本发明公开了一种数字半色调方法。 该方法包括以下步骤：（a1）将原始图像划分成非重叠块; （a2）通过将至少训练图像和对应于训练图像（a3）的半色调结果进行比较来获得最小均方训练（LMS训练）滤波器，该训练图像（a3）与LMS训练的滤波器优化类矩阵，其涉及 扩散面积和扩散重量; 和（a4）通过利用优化的类矩阵和扩散加权执行点扩散过程来生成与原始图像相对应的半色调图像来处理非重叠块。 还公开了如上述步骤（a3）中的详细的类矩阵优化方法。

公开(公告)号：US08049930B2

公开(公告)日：2011-11-01

申请号：US12283902

申请日：2008-09-15

申请人： Jing-Ming Guo ,  Yun-Fu Liu

发明人： Jing-Ming Guo ,  Yun-Fu Liu

IPC分类号： G06K15/00

CPC分类号： G06T1/0028 ,  G06T2201/0051

摘要： A method is performed to hide a watermark in two halftone images or in a single halftone image. The halftone image contains information of the hidden watermark, and each pixel value of the halftone image is associated with a corresponding offset value. The offset value is determined according to a corresponding pixel value of the watermark and a corresponding pixel value of another halftone image. The offset value is used to compensate a corresponding input value and a corresponding original error value of the halftone image.

摘要翻译： 执行一种在两个半色调图像中或在单个半色调图像中隐藏水印的方法。 半色调图像包含隐藏水印的信息，并且半色调图像的每个像素值与相应的偏移值相关联。 根据水印的相应像素值和另一半色调图像的对应像素值来确定偏移值。 偏移值用于补偿半色调图像的相应输入值和相应的原始误差值。

公开(公告)号：US08570602B2

公开(公告)日：2013-10-29

申请号：US13153386

申请日：2011-06-03

申请人： Jing-ming Guo ,  Yun-fu Liu

发明人： Jing-ming Guo ,  Yun-fu Liu

IPC分类号： H04N1/40 ,  G06K15/00

CPC分类号： H04N1/4051

摘要： A digital halftoning method and a method for constructing a class tiling map are disclosed. The present invention utilizes to arrange class matrixes in a staggering form such that adjacent class matrixes exist a staggering shift. Also, the class tiling map is constructed in this way. Then, a dot diffusion procedure is performed to an original image with the class tiling map so as to generate a halftone image corresponding to the original image. The present invention is capable of solving the problem of a periodic appearance caused by traditional dot diffusion.

摘要翻译： 公开了一种数字半色调方法和一种构建类别贴图的方法。 本发明利用以令人惊叹的形式布置类矩阵，使得相邻类矩阵存在交错的移位。 此外，类拼贴地图以这种方式构建。 然后，利用类别平铺图对原始图像执行点扩散处理，以便产生对应于原始图像的半色调图像。 本发明能够解决由传统点扩散引起的周期性外观的问题。

公开(公告)号：US20120176650A1

公开(公告)日：2012-07-12

申请号：US13153386

申请日：2011-06-03

申请人： Jing-ming Guo ,  Yun-fu Liu

发明人： Jing-ming Guo ,  Yun-fu Liu

IPC分类号： H04N1/405

CPC分类号： H04N1/4051

摘要： A digital halftoning method and a method for constructing a class tiling map are disclosed. The present invention utilizes to arrange class matrixes in a staggering form such that adjacent class matrixes exist a staggering shift. Also, the class tiling map is constructed in this way. Then, a dot diffusion procedure is performed to an original image with the class tiling map so as to generate a halftone image corresponding to the original image. The present invention is capable of solving the problem of a periodic appearance caused by traditional dot diffusion.

摘要翻译： 公开了一种数字半色调方法和一种构建类别贴图的方法。 本发明利用以令人惊叹的形式布置类矩阵，使得相邻类矩阵存在交错的移位。 此外，类拼贴地图以这种方式构建。 然后，利用类别平铺图对原始图像执行点扩散处理，以便产生对应于原始图像的半色调图像。 本发明能够解决由传统点扩散引起的周期性外观的问题。

公开(公告)号：US20100067057A1

公开(公告)日：2010-03-18

申请号：US12283902

申请日：2008-09-15

申请人： Jing-Ming Guo ,  Yun-Fu Liu

发明人： Jing-Ming Guo ,  Yun-Fu Liu

IPC分类号： H04N1/405

CPC分类号： G06T1/0028 ,  G06T2201/0051

摘要： A method is performed to hide a watermark in two halftone images or in a single halftone image. The halftone image contains information of the hidden watermark, and each pixel value of the halftone image is associated with a corresponding offset value. The offset value is determined according to a corresponding pixel value of the watermark and a corresponding pixel value of another halftone image. The offset value is used to compensate a corresponding input value and a corresponding original error value of the halftone image.

摘要翻译： 执行一种在两个半色调图像中或在单个半色调图像中隐藏水印的方法。 半色调图像包含隐藏水印的信息，并且半色调图像的每个像素值与相应的偏移值相关联。 根据水印的相应像素值和另一半色调图像的对应像素值来确定偏移值。 偏移值用于补偿半色调图像的相应输入值和相应的原始误差值。