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61. 发明授权

US08493610B2 Image reading method and image reading apparatus 失效
标题翻译：图像读取方法和图像读取装置
公开(公告)号：US08493610B2
公开(公告)日：2013-07-23
申请号：US12715527
申请日：2010-03-02
申请人： Kan Kitagawa , Mizuki Hayakawa
发明人： Kan Kitagawa , Mizuki Hayakawa
IPC分类号： H04N1/405
CPC分类号： H04N1/40062 , H04N1/40075
摘要： This invention is made to solve the problem that the conventional method cannot correctly determine whether an original is a halftone. To solve this, a method according to this invention detects, from an original, first and second feature pixels respectively exhibiting first and second features. A first feature pixel to first feature pixel distance and second feature pixel to second feature pixel distance are calculated from neighboring first feature pixels and neighboring second feature pixels, respectively. The average of the first feature pixel to first feature pixel distance and the neighboring second feature pixel to second feature pixel distance is calculated as a feature pixel to feature pixel distance. A histogram is generated by the appearance count of only a feature pixel to feature pixel distance for which the same value successively appears. Whether the read original is a halftone is discriminated based on this histogram.
摘要翻译：本发明是为了解决传统方法不能正确地判断原稿是否为半色调的问题。为了解决这个问题，根据本发明的方法从原件检测分别呈现第一和第二特征的第一和第二特征像素。从相邻的第一特征像素和相邻的第二特征像素分别计算第一特征像素，以将第一特征像素距离和第二特征像素与第二特征像素距离相关联。将第一特征像素的第一特征像素距离和相邻第二特征像素与第二特征像素距离的平均值计算为特征像素以具有像素距离。直方图通过仅特征像素的出现计数产生，其特征在于具有相同值相继出现的像素距离。基于该直方图来判别读取的原稿是否为半色调。

62. 发明授权

US08488199B2 Image output inspection system, image inspection apparatus, and computer program product 有权
标题翻译：图像输出检测系统，图像检测仪器和计算机程序产品
公开(公告)号：US08488199B2
公开(公告)日：2013-07-16
申请号：US12926828
申请日：2010-12-13
申请人： Hiroyuki Kawamoto
发明人： Hiroyuki Kawamoto
IPC分类号： H04N1/405 , H04N1/60 , G06K9/00 , G06K9/36
CPC分类号： H04N1/40075
摘要： An image-output inspection system includes a printer controller that generates output image data subjected to halftone processing in accordance with an input image forming condition specified in a printer language, an image output device that forms an image on an image output medium on the basis of the output image data, and transmits the output image data, an image reader that reads the image output medium, and generates read image data, and an image inspection apparatus that is connected to the image output device, and generates correct image data by restoring image data before subjected to the halftone processing from the output image data, and determines whether a print state of the image output medium is good or not by comparing the correct image data with the read image data.
摘要翻译：图像输出检查系统包括：打印机控制器，其根据打印机语言指定的输入图像形成条件生成经过半色调处理的输出图像数据;图像输出装置，其基于图像输出介质在图像输出介质上形成图像输出图像数据，并且发送输出图像数据，读取图像输出介质的图像读取器，并且生成读取的图像数据，以及连接到图像输出装置的图像检查装置，并且通过恢复图像生成正确的图像数据在从输出图像数据进行半色调处理之前的数据，并且通过将正确的图像数据与读取的图像数据进行比较来确定图像输出介质的打印状态是否良好。

63. 发明授权

US08390894B2 System and method for inverse halftoning 有权
标题翻译：逆半色调的系统和方法
公开(公告)号：US08390894B2
公开(公告)日：2013-03-05
申请号：US12585049
申请日：2009-09-01
申请人： Sadiq Mohammed Sait , Umair Farooq Siddiqi
发明人： Sadiq Mohammed Sait , Umair Farooq Siddiqi
IPC分类号： H04N1/405
CPC分类号： H04N1/40075
摘要： The system and method for inverse halftoning using a partitioning look-up table (LUT) provides an improvement on a conventional LUT method for inverse halftoning, and a hardware implementation thereof. The method includes the partitioning of the single LUT into N smaller look-up tables (s-LUTs). After partitioning, N s-LUTs are generated, which can be stored in separate memory blocks, allowing parallel access to more than one s-LUT at any time. Such parallelization is not possible with only one LUT stored in a single memory block. Additionally, two or more templates (represented as r templates) with different pixels at position 0 can be retrieved from the halftone image concurrently. Further, the contents of the single LUT are partitioned into Ns-LUTs, thus the total entries in Ns-LUTs are equal to the entries in the single LUT of the conventional LUT based method of inverse halftoning.
摘要翻译：使用分区查找表（LUT）进行逆半色调的系统和方法提供了用于逆半色调的常规LUT方法及其硬件实现的改进。该方法包括将单个LUT分割成N个更小的查找表（s-LUT）。在分区之后，生成N s-LUT，其可以存储在单独的存储器块中，允许在任何时间并行访问多个s-LUT。只有一个LUT存储在单个存储器块中，这种并行化是不可能的。另外，可以从半色调图像同时检索具有位置0的不同像素的两个或更多个模板（表示为r模板）。此外，单个LUT的内容被划分为Ns-LUT，因此Ns-LUT中的总条目等于基于LUT的逆半色调方法的单个LUT中的条目。

64. 发明授权

US08379273B2 Image processing apparatus and image processing method 有权
标题翻译：图像处理装置和图像处理方法
公开(公告)号：US08379273B2
公开(公告)日：2013-02-19
申请号：US12576787
申请日：2009-10-09
申请人： Noboru Abe
发明人： Noboru Abe
IPC分类号： H04N1/405 , H04N1/46 , G06K9/36 , G06K9/46
CPC分类号： H04N1/4055 , H04N1/40075
摘要： In a halftone image after halftone processing, significant dot values within a reference window that encompasses a pixel of interest are accumulated, and by referring to a conversion table based on the accumulated values, a multilevel pixel value that corresponds to that pixel of interest is restored. At this time, the size of the reference window is determined such that a product of a bit depth in the halftone processing and the number of pixels within the reference window becomes a minimum value that exceeds the number of tones in a multilevel image after restoration.
摘要翻译：在半色调处理之后的半色调图像中，积累包含感兴趣像素的参考窗口内的显着点值，并且通过参考基于累积值的转换表，恢复对应于感兴趣像素的多级像素值。此时，参考窗口的大小被确定为使得半色调处理中的位深度和参考窗口内的像素数量的乘积变为超过恢复后的多级图像中的色调数的最小值。

65. 发明授权

US08282182B2 Correction of print engine artifacts using an iterative halftoning search algorithm 有权
标题翻译：使用迭代半色调搜索算法校正打印引擎伪影
公开(公告)号：US08282182B2
公开(公告)日：2012-10-09
申请号：US12546445
申请日：2009-08-24
申请人： Kartheek Chandu , Larry M. Ernst , Nenad Rijavec , Mikel J. Stanich , Sreenath R. Vantaram , Chai W. Wu
发明人： Kartheek Chandu , Larry M. Ernst , Nenad Rijavec , Mikel J. Stanich , Sreenath R. Vantaram , Chai W. Wu
IPC分类号： B41J2/205 , G06K15/00
CPC分类号： H04N1/40075 , H04N1/4015 , H04N1/4051
摘要： Methods and systems herein provide for reducing artifacts during printing. One printing system is operable to prepare a continuous tone image (CTI) for printing onto a print medium by generating an initial half tone image (HTI) based on the CTI. The printing system includes a printer and a print controller. The print controller filters the initial HTI and the CTI with a perceptual filter and determines an error between the filtered CTI and the filtered HTI. The print controller prints the HTI via the printer to determine printer artifacts and processes a scanned version of the printed HTI to determine an error between the filtered CTI and the scanned and filtered HTI. This processing updates the initial HTI and reduces the error between the filtered CTI and the filtered HTI.
摘要翻译：本文的方法和系统提供了在打印期间减少伪影。一个打印系统可操作以通过基于CTI生成初始半色调图像（HTI）来准备用于打印到打印介质上的连续色调图像（CTI）。打印系统包括打印机和打印控制器。打印控制器用感知过滤器对初始HTI和CTI进行过滤，并确定过滤后的CTI和经过过滤的HTI之间的错误。打印控制器通过打印机打印HTI以确定打印机工件并处理打印的HTI的扫描版本，以确定过滤后的CTI与扫描和过滤的HTI之间的错误。该处理更新初始HTI并减少过滤后的CTI与经过滤的HTI之间的误差。

66. 发明授权

US08077357B2 Content-aware resizing of uniform rosette color halftone images 有权
标题翻译：内容感知尺寸均匀玫瑰花色彩半色调图像
公开(公告)号：US08077357B2
公开(公告)日：2011-12-13
申请号：US12242183
申请日：2008-09-30
申请人： Edgar Bernal , Robert P Loce , Shen-Ge Wang
发明人： Edgar Bernal , Robert P Loce , Shen-Ge Wang
IPC分类号： G06K15/00 , G06K15/02 , G06K9/32
CPC分类号： H04N1/40075 , H04N1/393 , H04N1/52
摘要： As provided herein, there are supplied teachings to systems and methods for resizing a digital uniform rosette halftone image composed of multiple colorant separations, by using uniform rosette halftone tile parameters. One approach entails receiving into a digital imaging system, a digital uniform rosette halftone image and a desired resizing factor for that digital uniform rosette halftone image. Subsequently the system will define uniform rosette cells within the color uniform rosette digital halftone image. From the defined uniform rosette cells, a number of uniform rosette halftone tile seams are determined for manipulation. The orientation of the number of uniform rosette halftone tile seams is dictated by the received desired resizing factor. An energy map of the digital uniform rosette halftone image is determined according to an energy metric derived from the multiple colorant separations. The energy of the number of uniform rosette halftone tile seams within the energy map is determined so as to provide indication of at least one low energy determined uniform rosette halftone tile seam. A resizing of the uniform rosette halftone image by manipulating the at least one low energy determined uniform rosette halftone tile seam is performed so as to obtain a resized uniform rosette halftone image. The resized uniform rosette halftone image may then be printed on a printer.
摘要翻译：如本文所提供的，通过使用均匀的玫瑰花半色调瓦片参数，提供了用于调整由多个着色剂分离组成的数字均匀玫瑰花半色调图像的系统和方法的教导。一种方法需要接收数字成像系统，数字均匀花莲半色调图像和用于该数字均匀花莲半色调图像的期望的调整大小因子。随后，系统将在彩色均匀玫瑰花数字半色调图像内定义均匀的玫瑰花结构细胞。从定义的均匀花环细胞中，确定了许多均匀的玫瑰花半色调瓷砖接缝用于操纵。均匀玫瑰状半色调瓷砖接缝数量的取向由接收到的所需调整尺寸系数决定。根据从多个着色剂分离得到的能量度量来确定数字均匀花莲半色调图像的能量图。确定能量图内均匀玫瑰状半色调瓷砖接缝数量的能量，以便提供至少一种低能量确定的均匀玫瑰花半色调瓦片接缝的指示。通过操作至少一个低能量确定的均匀玫瑰花半色调瓷砖接缝来调整均匀玫瑰状半色调图像的大小，以获得调整尺寸的均匀玫瑰花色半色调图像。然后可以在打印机上打印调整大小的均匀花莲半色调图像。

67. 发明授权

US08023150B2 Method and system for improved copy quality by generating contone value based on pixel pattern and image context type around pixel of interest 有权
标题翻译：通过基于像素图案和感兴趣的像素周围的图像上下文类型生成连续色调值来提高复印质量的方法和系统
公开(公告)号：US08023150B2
公开(公告)日：2011-09-20
申请号：US12719233
申请日：2010-03-08
申请人： Ramesh Nagarajan , Francis Kapo Tse , Chia-Hao Lee , John Christopher Cassidy , John W. Wu
发明人： Ramesh Nagarajan , Francis Kapo Tse , Chia-Hao Lee , John Christopher Cassidy , John W. Wu
IPC分类号： H04N1/405 , H04N1/407
CPC分类号： H04N1/40075
摘要： A method and system reconstructs a contone image from a binary image by first tagging pixels to identify one of a multiplicity of image content types. The tag information and the pattern of bits surrounding the pixel to be converted to a contone value are used to reconstruct a contone image from a binary image. The pattern of bits in the neighborhood is used to generate a unique identifier. The unique identifier is used as the address for a lookup table with the contone value to be used wherein each lookup table corresponds to an image context type.
摘要翻译：一种方法和系统通过首先标记像素来识别多个图像内容类型中的一个，从二值图像重建连字图像。标签信息和要转换为连续色调值的像素周围的位的图案被用于从二值图像重构连续色调图像。邻域中的比特模式用于生成唯一的标识符。唯一标识符用作具有要使用的连续色调值的查找表的地址，其中每个查找表对应于图像上下文类型。

68. 发明授权

US07719719B2 Sharpening a halftoned image 有权
标题翻译：锐化半色调图像
公开(公告)号：US07719719B2
公开(公告)日：2010-05-18
申请号：US11522610
申请日：2006-09-18
申请人： Robert P. Loce , Yeqing Zhang , Beilei Xu
发明人： Robert P. Loce , Yeqing Zhang , Beilei Xu
IPC分类号： H04N1/405 , H04N1/409
CPC分类号： H04N1/40075 , H04N1/4092
摘要： Images that include halftone structures are sharpened. A copy of received halftone image data is blurred, thereby reducing a detectability of edges of the halftone structures. Edges remaining in the blurred image data are detected. An edge enhancement image is generated based on the detected edges. The original received halftone image data is combined with the edge enhancement image, thereby generating sharpness enhanced image data having halftone structures. The sharpness enhanced image data having halftone structures can be rendered through a halftone screen that is compatible with a halftone screen that was used to generate the originally received image data. Alternatively, the sharpness enhanced image data having halftone structures is rendered according to error diffusion techniques, such as, rank order error diffusion in order to achieve or maintain dot or halftone structure compaction.
摘要翻译：包括半色调结构的图像被削尖。所接收的半色调图像数据的副本被模糊，从而降低了半色调结构的边缘的可检测性。检测残留在模糊图像数据中的边缘。基于检测到的边缘生成边缘增强图像。原始接收的半色调图像数据与边缘增强图像组合，从而产生具有半色调结构的锐度增强的图像数据。具有半色调结构的清晰度增强的图像数据可以通过与用于生成原始接收的图像数据的半色调屏幕兼容的半色调屏幕来呈现。或者，具有半色调结构的清晰度增强的图像数据根据误差扩散技术（诸如等级误差扩散）来形成，以实现或维持点或半色调结构压缩。

69. 发明授权

US07495805B1 Enhancing an image, such as an image having bi-valued pixel values 失效
标题翻译：增强图像，例如具有双值像素值的图像
公开(公告)号：US07495805B1
公开(公告)日：2009-02-24
申请号：US09512378
申请日：2000-02-25
申请人： Oscar Chi-Lim Au , Ming Sun Fu
发明人： Oscar Chi-Lim Au , Ming Sun Fu
IPC分类号： G06K15/00 , G06T5/00 , H04N1/405 , H04N1/407 , H04N1/409
CPC分类号： H04N1/40075
摘要： A method is proposed for converting an image in which each pixel takes one of two binary values, into an image in which each pixel can take continuous values. The method is iterative and works in the space domain. For each pixel, a neighborhood of the image is defined containing that pixel and other pixels. In a first iteration, the method obtains a continuous value for each pixel as a weighted sum of the binary values of the pixels in its neighborhood. In further iterations, the method obtains a continuous value for each pixel as a weighted sum of the values of the pixels in its neighborhood at the previous iteration.
摘要翻译：提出一种将每个像素取两个二进制值之一的图像转换成每个像素可以获得连续值的图像的方法。该方法是迭代的，并且在空间域中起作用。对于每个像素，定义图像的邻域包含该像素和其他像素。在第一次迭代中，该方法获得每个像素的连续值作为其邻域中像素的二进制值的加权和。在进一步迭代中，该方法获得每个像素的连续值，作为其前一次迭代中其邻域中的像素的值的加权和。

70. 发明授权

US07373015B2 Image processing device and method 有权
标题翻译：图像处理装置及方法
公开(公告)号：US07373015B2
公开(公告)日：2008-05-13
申请号：US10149486
申请日：2000-12-11
申请人： Kazuyuki Nako
发明人： Kazuyuki Nako
IPC分类号： G06K9/40
CPC分类号： G06T3/403 , H04N1/40075
摘要： In an image processing method for reducing an input image while preventing moire without deterioration of image quality, presence/absence of periodicity is detected for each pixel on the input image, and if there is periodicity, an image period is detected (S4). Sample points are sequentially extracted from the input image at prescribed sampling intervals (S5). A value is obtained by multiplying the image period by n (n is a natural number) that exceeds the sampling interval, to set a smoothing area. Pixels around a sample point is smoothed in the set smoothing area. The pixel value for a reduced image is obtained (S6). If there is an unprocessed sample point (NO at S8), the step goes back to S6, and the next sample point is subjected to a similar process. If the process is terminated for all the sample points (YES at S8), the reduced image is output.
摘要翻译：在用于减少输入图像同时防止图像质量恶化的图像处理方法中，对于输入图像上的每个像素检测周期性的存在/不存在，并且如果存在周期性，则检测图像周期（S 4）。以规定的采样间隔从输入图像顺序提取采样点（S 5）。通过将图像周期乘以n（n是自然数）获得超过采样间隔的值，以设置平滑区域。采样点周围的像素在设置的平滑区域中平滑。获得缩小图像的像素值（S 6）。如果存在未处理的采样点（S 8时为否），则该步骤返回到S 6，并且下一个采样点进行类似的处理。如果所有采样点的处理结束（步骤8中为“是”），则输出缩小图像。

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