公开(公告)号：US07764402B2

公开(公告)日：2010-07-27

申请号：US11724950

申请日：2007-03-15

申请人： Toshiaki Kakutani ,  Kimito Katsuyama

发明人： Toshiaki Kakutani ,  Kimito Katsuyama

IPC分类号： H04N1/40 ,  H04N1/405

CPC分类号： H04N1/4051

摘要： The invention provides a dither matrix generating method. This method generates a dither matrix for determining a status of dot formation on each of print pixels of a print image to be formed on a print medium in response to input image data. The method comprising: determining a targeted threshold value from among a plurality of threshold values, the targeted threshold value having a highest tendency for dot formation to be On among threshold values for which storage elements are to be determined; determining a storage element for the targeted threshold value from among a plurality of candidate storage elements based on a matrix evaluation value, the matrix evaluation value representing a correlation with a prescribed objective state, the matrix evaluation value being calculated respectively on a presupposition of hypothetical dot On/Off states, the hypothetical dot On/Off states resulting from the targeted threshold value being stored in each of the plurality of candidate storage elements that are candidates for storing the targeted threshold value; and repeating the determining the targeted threshold value and the determining the storage element for at least part of the plurality of threshold values. The determining the storage element includes: extracting an element block that constitutes a group of the storage elements, the element block making up a part of the dither matrix; and selecting the candidate storage elements in succession from among the plurality of storage elements that make up the extracted element block.

摘要翻译： 本发明提供一种抖动矩阵生成方法。 该方法响应于输入图像数据产生用于确定要在打印介质上形成的打印图像的每个打印像素上的点形成状态的抖动矩阵。 该方法包括：从多个阈值中确定目标阈值，将要确定存储元件的阈值中具有最高点形成趋势的目标阈值为On; 基于矩阵评估值从多个候选存储元件中确定目标阈值的存储元素，表示与规定的目标状态相关的矩阵评估值，分别基于假设点的假设来计算矩阵评估值 打开/关闭状态，由目标阈值产生的假想点开/关状态存储在作为用于存储目标阈值的候选的多个候选存储元件中的每一个中; 以及重复确定所述目标阈值和确定所述多个阈值中的至少一部分的所述存储元件。 确定存储元件包括：提取构成存储元件的组的元素块，构成抖动矩阵的一部分的元素块; 以及从构成所提取的元素块的多个存储元素中连续选择候选存储元素。

公开(公告)号：US20070258110A1

公开(公告)日：2007-11-08

申请号：US11724950

申请日：2007-03-15

申请人： Toshiaki Kakutani ,  Kimito Katsuyama

发明人： Toshiaki Kakutani ,  Kimito Katsuyama

IPC分类号： G06K15/00

CPC分类号： H04N1/4051

摘要： The invention provides a dither matrix generating method. This method generates a dither matrix for determining a status of dot formation on each of print pixels of a print image to be formed on a print medium in response to input image data. The method comprising: determining a targeted threshold value from among a plurality of threshold values, the targeted threshold value having a highest tendency for dot formation to be On among threshold values for which storage elements are to be determined; determining a storage element for the targeted threshold value from among a plurality of candidate storage elements based on a matrix evaluation value, the matrix evaluation value representing a correlation with a prescribed objective state, the matrix evaluation value being calculated respectively on a presupposition of hypothetical dot On/Off states, the hypothetical dot On/Off states resulting from the targeted threshold value being stored in each of the plurality of candidate storage elements that are candidates for storing the targeted threshold value; and repeating the determining the targeted threshold value and the determining the storage element for at least part of the plurality of threshold values. The determining the storage element includes: extracting an element block that constitutes a group of the storage elements, the element block making up a part of the dither matrix; and selecting the candidate storage elements in succession from among the plurality of storage elements that make up the extracted element block.

摘要翻译： 本发明提供一种抖动矩阵生成方法。 该方法响应于输入图像数据产生用于确定要在打印介质上形成的打印图像的每个打印像素上的点形成状态的抖动矩阵。 该方法包括：从多个阈值中确定目标阈值，将要确定存储元件的阈值中具有最高点形成趋势的目标阈值为On; 基于矩阵评估值从多个候选存储元件中确定目标阈值的存储元素，表示与规定的目标状态相关的矩阵评估值，分别基于假设点的假设来计算矩阵评估值 打开/关闭状态，由目标阈值产生的假想点开/关状态存储在作为用于存储目标阈值的候选的多个候选存储元件中的每一个中; 以及重复确定所述目标阈值和确定所述多个阈值中的至少一部分的所述存储元件。 确定存储元件包括：提取构成存储元件的组的元素块，构成抖动矩阵的一部分的元素块; 以及从构成所提取的元素块的多个存储元素中连续选择候选存储元件。

公开(公告)号：US08767264B2

公开(公告)日：2014-07-01

申请号：US13428528

申请日：2012-03-23

申请人： Toshiaki Kakutani ,  Takuma Hayashi

发明人： Toshiaki Kakutani ,  Takuma Hayashi

IPC分类号： H04N1/40 ,  H04N1/405 ,  B41J2/205

CPC分类号： B41J2/07 ,  H04N1/4051

摘要： When dot data indicating whether or not a dot is formed on the basis of the gradation value for each pixel, dots belonging to a plurality of pixel groups having different printing conditions are printed in a common region in an overlapping manner, and the distribution of dots in the common region has a noise characteristic possessing a peak in the spatial frequency region on the high-frequency side. In a case where first and second pixels belonging to two pixel groups are proximal pixels in the common region in a predetermined gradation range in which probabilities k1 and k2 at which a dot is formed in the first and second pixels are such that k1

摘要翻译： 当表示是否基于每个像素的灰度值形成点的点数据时，属于具有不同打印条件的多个像素组的点以重叠的方式打印在公共区域中，并且点的分布 在公共区域具有在高频侧的空间频率区域具有峰值的噪声特性。 在属于两个像素组的第一和第二像素是在预定灰度范围内的公共区域中的近像素的情况下，其中在第一和第二像素中形成点的概率k1和k2使得k1 <0.5和 k2 <0.5，两个近像素中的点的概率K被设定为接近k1·k2。

公开(公告)号：US08542409B2

公开(公告)日：2013-09-24

申请号：US12755197

申请日：2010-04-06

申请人： Takuya Wakayama ,  Satoshi Yamazaki ,  Toshiaki Kakutani

发明人： Takuya Wakayama ,  Satoshi Yamazaki ,  Toshiaki Kakutani

IPC分类号： H04N1/40 ,  G06K9/20 ,  B41J2/205

CPC分类号： H04N1/405

摘要： A printing apparatus is provided with a halftone unit performing a halftone process in which a possibility of dot formation is determined for each pixel based on a dot occurrence rate of the pixel constituting image data, and a printing unit forming dots on a recording medium based on the possibility of dot formation. The halftone unit predicts the occurrence of dot overlap in which a plurality of dots overlaps on the printing medium and performs the halftone process based on an evaluation index according to the dot overlap.

摘要翻译： 印刷装置具有半色调单元，其执行半色调处理，其中基于构成图像数据的像素的点出现率确定每个像素的点形成的可能性，以及基于在记录介质上形成点的打印单元，基于 点形成的可能性。 半色调单元预测多个点在打印介质上重叠的点重叠的发生，并且基于根据点重叠的评估指标来执行半色调处理。

公开(公告)号：US08517494B2

公开(公告)日：2013-08-27

申请号：US12685550

申请日：2010-01-11

申请人： Toshiaki Kakutani

发明人： Toshiaki Kakutani

IPC分类号： B41J29/38 ,  B41J2/205

CPC分类号： B41J19/142 ,  B41J2/2132 ,  G06K15/107

摘要： There is provided a printing apparatus having a nozzle row in a sub scanning direction; a halftone processing unit comparing each threshold value of a dither mask with image data; and a printing unit controlling ejection of ink from each nozzle by using a result of the halftone process. Here, a constant correspondence relationship is set between each position in a minimal repetition unit of a nozzle pattern and each threshold value of the dither mask applied to the each position. The dither mask includes at least one side of nozzles on both ends of the nozzle row or frontmost-end nozzles on both ends of the nozzle row in a print area having a predetermined range of an ink duty ratio. In addition, the plurality of threshold values are set such that a use ratio of front-end nozzles is lower than a use ratio of middle nozzles.

摘要翻译： 提供了一种在副扫描方向上具有喷嘴列的打印装置; 半色调处理单元，将抖动掩模的每个阈值与图像数据进行比较; 以及打印单元，其通过使用半色调处理的结果控制从每个喷嘴喷射墨水。 这里，在喷嘴图案的最小重复单元中的每个位置和应用于每个位置的抖动掩模的每个阈值之间设置常数对应关系。 抖动掩模包括在具有预定范围的墨水占空比的喷墨列的两端上的喷嘴的至少一侧或喷嘴列两端的最前端喷嘴。 此外，多个阈值被设定为使得前端喷嘴的使用比例低于中间喷嘴的使用比例。

公开(公告)号：US08491078B2

公开(公告)日：2013-07-23

申请号：US12616684

申请日：2009-11-11

申请人： Toshiaki Kakutani

发明人： Toshiaki Kakutani

IPC分类号： B41J29/38

CPC分类号： B41J2/2107 ,  G06K15/102 ,  H04N1/508 ,  H04N1/52

摘要： A printing apparatus performs printing on a printing medium by moving a print head relative to the printing medium in a main scanning direction, which is a width direction of the printing medium, and a sub-scanning direction that intersects the main scanning direction. The printing apparatus includes a print head that includes a plurality of nozzles configured to eject ink; an acquisition unit that acquires image data; and a dot forming unit that controls the print head so as to eject the ink to form dots corresponding to the image data on the printing medium. When suppression dots, which are dots formed to suppress bleeding, are formed on the printing medium, the dot forming unit controls the print head so that ink corresponding to the suppression dots is ejected from preceding nozzles arranged to eject ink to the printing medium earlier than other nozzles of the plurality of nozzles.

摘要翻译： 打印装置通过在作为打印介质的宽度方向的主扫描方向和与主扫描方向相交的副扫描方向相对于打印介质移动打印头来在打印介质上进行打印。 打印装置包括打印头，该打印头包括被配置为喷射墨水的多个喷嘴; 获取单元，其获取图像数据; 以及点形成单元，其控制打印头以便喷射墨以在打印介质上形成与图像数据相对应的点。 当在打印介质上形成抑制点​​形成以抑制渗色的抑制点时，点形成单元控制打印头，使得与抑制点相对应的墨水从布置成喷射墨水的打印介质喷射到比打印介质更早 多个喷嘴中的其它喷嘴。

公开(公告)号：US20110122425A1

公开(公告)日：2011-05-26

申请号：US13022568

申请日：2011-02-07

申请人： Toshiaki Kakutani

发明人： Toshiaki Kakutani

IPC分类号： G06K15/02

CPC分类号： H04N1/4051 ,  H04N1/4057

摘要： In an image output control system, an image processing device processes image data in accordance with a preset series of image processing and supplies processed image data to an image output device, which outputs the processed image. The image processing device determines the number of dots to be created in each pixel group, which has a preset number of multiple pixels included in an image, and outputs the number of dots as dot number data to the output device. In response to the dot number data, the output device selects one among multiple options for a priority order of individual pixels included in each pixel group, determines the positions of dot-on pixels in the pixel group, and creates dots at the determined positions of the dot-on pixels to output an image. In the image output control system, the image processing device supplies the dot number data to the output device.

摘要翻译： 在图像输出控制系统中，图像处理装置根据预设的一系列图像处理处理图像数据，并将经处理的图像数据提供给输出处理图像的图像输出装置。 图像处理装置确定在图像中包含预定数量的多个像素的每个像素组中要创建的点数，并将该点数作为点数数据输出到输出装置。 响应于点数数据，输出装置针对每个像素组中包括的各个像素的优先顺序选择多个选项中的一个，确定像素组中的点亮像素的位置，并且在确定的位置 点阵像素输出图像。 在图像输出控制系统中，图像处理装置将点号数据提供给输出装置。

公开(公告)号：US07924464B2

公开(公告)日：2011-04-12

申请号：US11600988

申请日：2006-11-17

申请人： Toshiaki Kakutani

发明人： Toshiaki Kakutani

IPC分类号： H04N1/405 ,  H04N1/407

CPC分类号： H04N1/40087 ,  H04N1/405

摘要： An image processing method involves processing image data indicative of an image represented with a prescribed number of input tones by each of pixel groups composed of a plurality of print pixels, and generating dot data representing a status of dot formation on each of the print pixels to be formed on a print medium. The method includes preparing a first conversion table and a second conversion table, determining the pixel group tone value in response to the input tone value corresponding to the pixel group, converting the determined pixel group tone value into the code values for each of the pixel groups, by referring to the first conversion table, decoding the acquired code value into the output dot arrangement for each of the pixel groups, by referring to the second conversion table, and outputting the dot data in response to the output dot arrangement.

摘要翻译： 图像处理方法包括处理由表示由多个打印像素组成的每个像素组的由规定数量的输入色调表示的图像的图像数据，并且生成表示每个打印像素上的点形成状态的点数据，以 形成在打印介质上。 该方法包括：准备第一转换表和第二转换表，响应于与该像素组对应的输入色调值，确定像素组色调值，将确定的像素组色调值转换为每个像素组的代码值 通过参考第一转换表，通过参考第二转换表将获取的代码值解码为每个像素组的输出点排列，并响应输出点排列输出点数据。

公开(公告)号：US07898693B2

公开(公告)日：2011-03-01

申请号：US11643748

申请日：2006-12-20

申请人： Toshiaki Kakutani

发明人： Toshiaki Kakutani

IPC分类号： H04N1/00 ,  H04N1/40 ,  H04N1/46 ,  H04N1/405

CPC分类号： H04N1/4051

摘要： This invention provides a method of generating a dither matrix that stores each of a plurality of threshold values in each of elements for determining a status of dot formation of each print pixel of a print image to be produced on a printing medium by carrying out halftone processing on image data. The method includes: an evaluation value determining step of determining a second evaluation value for a second dot status based on a first evaluation value and an evaluation value change level, the first evaluation value being for a first dot status prior to determination of a storage element of a targeted threshold value among the plurality of threshold values, the second dot status hypothetically presuming that the storage element of the targeted threshold value has been determined, the evaluation value change level representing a level of variation of the evaluation value associated with change from the first dot status to the second dot status; a storage element determining step of determining an element for storing the targeted threshold value based on the determined second evaluation value; and a repeating step of repeating the evaluation value determining step and the storage element determining step, for at least some of the plurality of threshold values.

摘要翻译： 本发明提供了一种生成抖动矩阵的方法，该抖动矩阵将每个元素中的每一个存储在每个元素中，以通过执行半色调处理来确定要在打印介质上产生的打印图像的每个打印像素的点形成的状态 对图像数据。 该方法包括：评估值确定步骤，用于基于第一评估值和评估值变化水平来确定第二点状态的第二评估值，所述第一评估值用于在确定存储元件之前的第一点状态 在所述多个阈值中的目标阈值之间，所述第二点状态假定地假设已经确定了所述目标阈值的存储元素，所述评估值变化等级表示与从所述阈值变化相关联的所述评估值的变化水平 第一个点状态到第二个点状态; 存储元件确定步骤，基于所确定的第二评估值确定用于存储所述目标阈值的元素; 以及针对所述多个阈值中的至少一些重复所述评估值确定步骤和所述存储元件确定步骤的重复步骤。

公开(公告)号：US20100284030A1

公开(公告)日：2010-11-11

申请号：US12661741

申请日：2010-03-22

申请人： Seishin Yoshida ,  Yukimitsu Fujimori ,  Toshiaki Kakutani ,  Koichi Yoshizawa

发明人： Seishin Yoshida ,  Yukimitsu Fujimori ,  Toshiaki Kakutani ,  Koichi Yoshizawa

IPC分类号： H04N1/60

CPC分类号： G06T11/001 ,  G01J3/462 ,  H04N1/6019

摘要： There is provided a color conversion table having a plurality of pieces of reference color image data making correspondence between color data for a first image device and color data for a second image device and including a specified total information amount. The color conversion table is used to distribute the reference color image data over a prescribed area in a specified color space. Color data information for each reference color image data is increased more than a specified amount within a limit of the specified total information amount. Further, a color conversion table is created using an original table which highly accurately defines colors in part of the table. If such color conversion tables are referenced for color conversion, it is possible to suppress the storage capacity, provide color matching, and perform high accuracy color conversion.

摘要翻译： 提供了一种颜色转换表，其具有多个参考彩色图像数据，使第一图像装置的颜色数据和第二图像装置的颜色数据之间对应，并且包括指定的总信息量。 颜色转换表用于在指定的颜色空间中的规定区域上分配参考彩色图像数据。 每个参考彩色图像数据的颜色数据信息在指定的总信息量的限制内增加超过指定量。 此外，使用在表格的一部分中高精度地定义颜色的原始表创建颜色转换表。 如果这种颜色转换表用于颜色转换，则可以抑制存储容量，提供颜色匹配，并且执行高精度的颜色转换。