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11. 发明申请

US20080297813A1 ASYMMETRICAL DIGITAL FILTERS FOR DOT GAIN ADJUSTMENTS 有权
标题翻译：不对称数字滤波器，用于增益调整
公开(公告)号：US20080297813A1
公开(公告)日：2008-12-04
申请号：US11754549
申请日：2007-05-29
申请人： Kurt M. Sanger , Gustav J. Braun , Peter D. Burns
发明人： Kurt M. Sanger , Gustav J. Braun , Peter D. Burns
IPC分类号： H04N1/52
CPC分类号： H04N1/6052 , H04N1/40075 , H04N1/407
摘要： A method for adjusting dot-gain for a halftone binary bitmap file comprises inputting a halftone binary bitmap file consisting of binary pixels (400) to an asymmetric digital filter (500). The binary pixels are filtered with the asymmetric digital filter and generates multi-level pixels (506). The multi-level pixel are compared to a preset level (408) and generates a binary pixel output (410). The binary pixel output is collected and forms an adjusted halftone binary bitmap file (270).
摘要翻译：用于调整半色调二进制位图文件的点增益的方法包括将由二进制像素（400）组成的半色调二进制位图文件输入到非对称数字滤波器（500）。用非对称数字滤波器对二进制像素进行滤波，并生成多级像素（506）。将多电平像素与预设电平（408）进行比较，并生成二进制像素输出（410）。收集二进制像素输出并形成调整后的半色调二进制位图文件（270）。

12. 发明申请

US20080225341A1 Image processing circuit, displaying apparatus, and printing apparatus 有权
标题翻译：图像处理电路，显示装置和打印装置
公开(公告)号：US20080225341A1
公开(公告)日：2008-09-18
申请号：US11984522
申请日：2007-11-19
申请人： Yoshiyuki Ono , Takashi Sawazaki , Akira Saito
发明人： Yoshiyuki Ono , Takashi Sawazaki , Akira Saito
IPC分类号： G09G5/00 , G06K15/00 , H04N1/40
CPC分类号： G06T5/002 , G06T5/20 , G06T2200/12 , G06T2207/20021 , H04N1/40075 , H04N1/4105
摘要： An image processing circuit includes: a plurality of counters that extract image blocks each of which includes a predetermined number of pixels from input image data, count a number of pixels having a predetermined value for each of the image blocks, calculate a pixel value for each of the extracted image blocks, and output a plurality of bit streams each of which represents the counted number for a respective image block, the number of the plurality of counters being larger than a bit length defined for a single writing process with the memory divided by the bit length of a value calculated for an image block; a converter that converts the bit streams output from the plurality of counters, by adjusting a bit length of the bit streams for writing in the memory, and outputs the converted bit streams; and a synthesizer that synthesizes the plurality of bit streams output from the converter to generate a bit stream having the bit length defined for a single writing process with the memory, and outputs the generated bit stream.
摘要翻译：图像处理电路包括：多个计数器，从输入图像数据中提取图像块，每个图像块包括预定数量的像素，对每个图像块计算具有预定值的像素数，计算每个图像块的像素值并且输出多个比特流，每个比特流表示相应图像块的计数号码，多个计数器的数量大于为存储器划分的单个写入处理定义的比特长度，除以为图像块计算的值的位长度; 转换器，通过调整用于在存储器中写入的比特流的比特长度来转换从多个计数器输出的比特流，并输出转换的比特流; 以及合成器，其合成从转换器输出的多个比特流，以生成具有为存储器的单个写入处理定义的比特长度的比特流，并输出生成的比特流。

13. 发明申请

US20080117465A1 IMAGE PROCESSING USING HYBRID LOOKUP TABLE 失效
标题翻译：使用混合查找表的图像处理
公开(公告)号：US20080117465A1
公开(公告)日：2008-05-22
申请号：US11782091
申请日：2007-07-24
申请人： Woo-jun Chung , Sang-youn Shin , Choon-woo Kim , Byong-tae Ryu , Jong-ok Lee
发明人： Woo-jun Chung , Sang-youn Shin , Choon-woo Kim , Byong-tae Ryu , Jong-ok Lee
IPC分类号： H04N1/405
CPC分类号： H04N1/40075 , H04N1/40068
摘要： An image processing method and an image processing apparatus converts a binary image into a grayscale image by increasing the size and information quantity of the binary image. The image processing method includes generating a plurality of lookup tables having multiple gray level values assigned to a predetermined pattern of the binary image such that the gray level is retrieved from the plurality of lookup tables depending on the context of the block being processed. The binary image may be converted into the grayscale image by applying the gray value of one of the plurality of lookup tables that corresponds to the context, such as the frequency components of the binary image. With this configuration, since the size and information quantity of an image can be reduced for transmission, it is possible to prevent deterioration of image quality when the image is restored, while also printing at a higher speed.
摘要翻译：图像处理方法和图像处理装置通过增加二值图像的大小和信息量将二进制图像转换成灰度图像。图像处理方法包括生成具有分配给二进制图像的预定图案的多个灰度值的多个查找表，使得根据正被处理的块的上下文从多个查找表中检索灰度级。可以通过应用与上下文相对应的多个查找表中的一个的灰度值，例如二进制图像的频率分量，将二进制图像转换成灰度图像。利用这种配置，由于可以减小图像的尺寸和信息量以进行传输，所以可以防止当图像恢复时图像质量的劣化，同时也以更高的速度进行打印。

14. 发明申请

US20080063297A1 Apparatus for eliminating moire in scanned image and method for the same 有权
标题翻译：用于消除扫描图像中的波纹的装置及其方法
公开(公告)号：US20080063297A1
公开(公告)日：2008-03-13
申请号：US11979650
申请日：2007-11-07
申请人： Chen-Chung Chen , Cheng-Huei Chiang
发明人： Chen-Chung Chen , Cheng-Huei Chiang
IPC分类号： G06K9/40
CPC分类号： G06T5/002 , G06T5/20 , G06T2207/10008 , G06T2207/30176 , H04N1/40075 , H04N1/4052
摘要： A method for eliminating moire in scanned digital image comprises the steps of using an average circuit for taking weighted average and error diffusing a gray level difference between an error diffusion pixel Gij and neighbor pixels to neighbor to obtain output image pixel Y′ij; using a second adder for subtracting the error diffusion pixel Gij from the output image pixel Y′ij to obtain a neighbor image error dij; using a error filter H(z) to process the neighbor image error dij to obtain a corrected pixel error H(d(i,j)); and using a first adder for adding the corrected pixel error H(d(i,j)) and the input image pixel Yij to obtain the corrected error diffusion pixel Gij, and then jumping to first step until all pixels being processed. The method provides real time treatment for eliminating moire and provide smooth image.
摘要翻译：一种消除扫描数字图像中的波纹的方法，包括以下步骤：使用平均电路进行加权平均和误差扩散误差扩散像素G和相邻像素之间的灰度级差以获得输出图像像素Y'＆lt; ij＆gt;; 使用第二加法器从输出图像像素Y'ij中减去误差扩散像素G ij ij以获得邻近图像误差d ij ij; 使用误差滤波器H（z）来处理相邻图像误差d ij ij以获得校正像素误差H（d（i，j））; 并且使用第一加法器来相加校正的像素误差H（d（i，j））和输入图像像素Y ij ij，以获得校正的误差扩散像素G ，然后跳转到第一步，直到所有像素都被处理。该方法提供实时处理，消除莫尔条纹，提供平滑的图像。

15. 发明授权

US07218418B2 Digital de-screening of documents 失效
标题翻译：数字去筛选文件
公开(公告)号：US07218418B2
公开(公告)日：2007-05-15
申请号：US10187499
申请日：2002-07-01
申请人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
发明人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
IPC分类号： H04N1/405 , G06K9/40
CPC分类号： H04N1/40075
摘要： A method and a system for de-screening an image signal. The system comprises a filter bank, a control module and a blend module. The filter bank filters the image signal and produces a set of filter output signals. The control module generates at least one control signal based on the image signal and some of the filter output signals. The blend module dynamically blends the filter output signals in accordance with the control signal to produce a de-screened output signal.
摘要翻译：一种用于去除图像信号的方法和系统。该系统包括过滤器组，控制模块和混合模块。滤波器组滤除图像信号并产生一组滤波器输出信号。控制模块基于图像信号和一些滤波器输出信号产生至少一个控制信号。混合模块根据控制信号动态地混合滤波器输出信号以产生去屏蔽的输出信号。

16. 发明申请

US20070053003A1 Color management of halftoned images 有权
标题翻译：半色调图像的颜色管理
公开(公告)号：US20070053003A1
公开(公告)日：2007-03-08
申请号：US11218966
申请日：2005-09-02
申请人： Robert Loce , Beilei Xu , Raja Bala
发明人： Robert Loce , Beilei Xu , Raja Bala
IPC分类号： H04N1/405
CPC分类号： H04N1/60 , H04N1/40075
摘要： Aspects of color of a halftoned image are controlled or adjusted. A method for adjustment can include determining a color description of a color of an area or window associated with a target halftoned pixel, determining a desired adjustment to the color associated with the target pixel, determining a color change value based on the desired adjustment and the color description associated with the target pixel, combining the color change value with at least one value of the target halftoned pixel, thereby generating at least one combined target pixel value and quantizing the at least one combined target pixel value. For instance error diffusion and/or rank-ordered error diffusion is used to perform the quantization. Color adjustments can be based on user preference and/or calibration compensations between original and target devices.
摘要翻译：控制或调整半色调图像的颜色方面。一种用于调整的方法可以包括确定与目标半色调像素相关联的区域或窗口的颜色的颜色描述，确定与目标像素相关联的颜色的期望调整，基于期望的调整确定颜色变化值，以及与目标像素相关联的颜色描述，将颜色变化值与目标半色调像素的至少一个值组合，从而生成至少一个组合目标像素值并量化至少一个组合目标像素值。例如，误差扩散和/或等级有序误差扩散用于执行量化。颜色调整可以基于原始设备和目标设备之间的用户偏好和/或校准补偿。

17. 发明授权

US07133161B2 Rehalftoning of gray halftones with optimal screen frequency for robust suppression of moiré 失效
标题翻译：灰色半色调的重新调谐具有最佳的屏幕频率，可以很好地抑制莫尔条纹
公开(公告)号：US07133161B2
公开(公告)日：2006-11-07
申请号：US10153355
申请日：2002-05-22
申请人： Beilei Xu , Robert Paul Loce
发明人： Beilei Xu , Robert Paul Loce
IPC分类号： H04N1/405
CPC分类号： H04N1/40075
摘要： Optimal rehalftone screen frequencies are found by searching frequency space for points that are maximally spaced from significant frequency components of an input image halftone screen or screens. Selecting a rehalftone screen having a maximally spaced frequency produces moiré of the highest frequency possible. High frequency moiré are visually unobjectionable. Optimal rehalftone frequencies may be found near the maximally spaced points where system or other constraints limit the usefulness of the maximally spaced points. Rehalftone screen frequencies in the range of about 1.4 to about 1.8 times the fundamental frequency of the input image halftone screen are often optimal. A rehalftone screen frequency of 1.5 times the fundamental frequency of the input image halftone screen is often optimal when the input image is monochrome and uses a dot screen.
摘要翻译：通过搜索与输入图像半色调屏幕或屏幕的显着频率分量最大间隔的点的频率空间来找到最佳重呼频率屏幕频率。选择具有最大间隔频率的重调频屏幕可产生最高频率的莫尔条纹。高频莫尔条目在视觉上是无敌的。可以在最大间隔的点附近找到最佳重复频率，其中系统或其他约束限制了最大间隔点的有用性。通常输入图像半色调屏幕的基频的约1.4至约1.8倍的范围内的重调频屏幕频率是最佳的。当输入图像为单色并使用点画面时，输入图像半色调屏幕的基频的1.5倍的重复频率屏幕频率通常是最佳的。

18. 发明申请

US20060215194A1 Image processing apparatus, image forming apparatus, and image processing method 失效
标题翻译：图像处理装置，图像形成装置和图像处理方法
公开(公告)号：US20060215194A1
公开(公告)日：2006-09-28
申请号：US11391808
申请日：2006-03-28
申请人： Makio Gotoh , Masanori Minami
发明人： Makio Gotoh , Masanori Minami
IPC分类号： G06F15/00
CPC分类号： H04N1/40075 , H04N1/60
摘要： As the color conversion process for image data of an RGB signal, a color correction section 26 performs a color correction process, and a black generation and under color removal section 27 performs a black generation and under color removal process. In the color conversion process, the color correction section 26 and the black generation and under color removal section 27 are supplied with a halftone frequency recognized by a halftone frequency recognition section 23. The color correction section 26 and the black generation and under color removal section 27 change the process based upon the halftone frequency. As a result, an image processing apparatus is realized in which improved image quality can be produced by an optimum image process that is performed on an image containing a halftone area depending upon the halftone frequency of the halftone area so that image quality is improved.
摘要翻译：作为RGB信号的图像数据的颜色转换处理，颜色校正部26进行颜色校正处理，黑色生成和下部颜色去除部27进行黑色生成和颜色除去处理。在颜色转换处理中，颜色校正部分26和黑色产生和下
色移除部分27被提供由半色调频率识别部分23识别的半色调频率。颜色校正部分26和黑色生成和下面颜色去除部分27基于半色调频率改变处理。结果，实现了一种图像处理装置，其中可以通过根据半色调区域的半色调频率对包含半色调区域的图像执行的最佳图像处理来产生改善的图像质量，从而提高图像质量。

19. 发明申请

US20060066904A1 Screen design 有权
标题翻译：屏幕设计
公开(公告)号：US20060066904A1
公开(公告)日：2006-03-30
申请号：US10950841
申请日：2004-09-27
申请人： Mani Fischer , Doron Shaked , Craig Breen , Rodolfo Jodra
发明人： Mani Fischer , Doron Shaked , Craig Breen , Rodolfo Jodra
IPC分类号： G06K15/00
CPC分类号： H04N1/40075 , H04N1/40068
摘要： A method for designing a screen includes receiving screen information related to a picture element divided into a number of subunits of the picture element, and determining an amount of an ink to apply to a media at a location of the picture element in response to the information. The subunits of the picture element have a higher resolution than the resolution of a printing apparatus at which the printing element will be reproduced.
摘要翻译：一种用于设计屏幕的方法包括：接收与划分成该图像元素的多个子单元的图像元素有关的屏幕信息，以及响应该信息确定应用于该图像元素位置处的介质的墨量。像素的子单元具有比打印元件将被再现的打印设备的分辨率更高的分辨率。

20. 发明申请

US20060023259A1 Halftone detection and removal 失效
标题翻译：半色调检测和去除
公开(公告)号：US20060023259A1
公开(公告)日：2006-02-02
申请号：US11174590
申请日：2005-07-06
申请人： Timothy Wark , James Besley , James Andrew
发明人： Timothy Wark , James Besley , James Andrew
IPC分类号： H04N1/40 , G06K15/00
CPC分类号： H04N1/40075
摘要： Methods, computer program products and apparatuses are disclosed for processing images to detect and/or remove halftone. In one aspect, a portion of an image comprising a plurality of colour channels is selected for processing (210), a frequency domain representation of the selected portion is generated for each colour channel (220), data relating to predetermined regions in the frequency domain representations is processed (230), and halftone present in the selected portion is detected based on a result of the processing the data (240). In another aspect, an image is arranged into a plurality of bands each comprising a predetermined number of consecutive lines of pixels, each of the plurality of bands is arranged into a plurality of tiles of pixels, one of the plurality of tiles is selected as a selected portion, data relating to the selected portion is processed and halftone present in the selected portion is detected based on a result of the processing and on a result of processing at least one other portion of the image. Halftone may be detected based on spatial characteristics or frequency characteristics within the selected portion and detected halftone may be removed from spatial domain data or frequency domain data relating to the selected portion.
摘要翻译：公开了用于处理图像以检测和/或去除半色调的计算机程序产品和装置的方法。在一个方面，选择包括多个颜色通道的图像的一部分用于处理（210），为每个颜色通道（220）生成所选部分的频域表示，与频域中的预定区域有关的数据处理表示（230），并且基于处理数据（240）的结果来检测存在于所选部分中的半色调。在另一方面，图像被布置成多个频带，每个频带包括预定数量的连续行像素，多个频带中的每一个被排列成多个像素块，多个图块之一被选择为对所选择的部分进行处理，并且基于处理的结果以及处理图像的至少另一部分的结果来检测存在于所选部分中的半色调的数据。可以基于所选部分内的空间特性或频率特性来检测半色调，并且可以从相关于所选部分的空间域数据或频域数据中去除所检测的半色调。

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