公开(公告)号：US20100119165A1

公开(公告)日：2010-05-13

申请号：US12588363

申请日：2009-10-13

申请人： Koichiro Hirao

发明人： Koichiro Hirao

IPC分类号： G06K9/36

CPC分类号： G06T9/005 ,  G06T9/00 ,  H04N1/4105 ,  H04N19/13 ,  H04N19/136 ,  H04N19/167 ,  H04N19/17 ,  H04N19/182 ,  H04N19/27 ,  H04N19/85

摘要： An image compression unit of the invention includes a preprocessing unit that performs preprocessing for converting a first bit string representing intensity of pixels of which image data is composed into a second bit string, a number of digits of which is smaller than a number of digits of the first bit string, based on a predetermined region included in the image data and a first attribute information for identifying an attribute of the predetermined region, with the preprocessing being associated with the predetermined region of the image data and a bit string conversion unit which converts the second bit string into a third bit string based on distribution of frequency of appearance of the intensity in the second bit string and the first attribute information such that, for the pixel having higher frequency of appearance, the number of bit planes on which data of the pixel appear is less.

摘要翻译： 本发明的图像压缩单元包括预处理单元，该预处理单元执行预处理，用于将表示图像数据组成的像素的强度的第一位串转换成第二位串，其数字数小于 基于包括在图像数据中的预定区域的第一位串和用于识别预定区域的属性的第一属性信息，其中预处理与图像数据的预定区域相关联，以及位串转换单元，其转换 基于第二位串中的强度出现频率的分布和第一属性信息，将第二位串转换为第三位串，使得对于具有较高出现频率的像素，位数的数量为 像素出现较少。

公开(公告)号：US07710605B2

公开(公告)日：2010-05-04

申请号：US11140696

申请日：2005-05-31

申请人： Toshitsugu Yamamoto

发明人： Toshitsugu Yamamoto

IPC分类号： G06K15/00 ,  H04N1/405 ,  G09G5/02

CPC分类号： H04N1/4105

摘要： A print system includes a computer and a printer. Image data having pseudo gradation with a dither pattern are printed by the printer. The computer divides the image data into predetermined areas, determines whether or not a dot arrangement pattern of image data in each of the areas matches a dither pattern that was used for generating the pseudo gradation, determines a representative value concerning a density of image data within the area if they match one another, and sends data related to the determined representative value to the printer. The printer obtains a representative value of each area from compressed data received from the computer and compares the obtained representative value with the dither pattern so as to reproduce a dot pattern.

摘要翻译： 打印系统包括计算机和打印机。 具有抖动图案的伪灰度的图像数据由打印机打印。 计算机将图像数据划分为预定区域，确定每个区域中的图像数据的点排列图案是否与用于产生伪灰度的抖动图案匹配，确定与图像数据的密度相关的代表值 该区域如果彼此匹配，并将与确定的代表值相关的数据发送到打印机。 打印机从从计算机接收的压缩数据中获得每个区域的代表值，并将获得的代表值与抖动图案进行比较，以再现点图案。

公开(公告)号：US07444027B2

公开(公告)日：2008-10-28

申请号：US10303180

申请日：2002-11-25

申请人： Peter G. Anderson

发明人： Peter G. Anderson

IPC分类号： G06K9/36

CPC分类号： H04N1/4105 ,  G06T9/005

摘要： Methods, devices and systems for compressing images are provided. One method includes creating halftone mask structures and applying compression coding techniques to arrayed pixels sorted using the halftone mask structures in order to convert an image to a compressed multi-level, halftoned image.

摘要翻译： 提供了用于压缩图像的方法，装置和系统。 一种方法包括创建半色调掩模结构并将压缩编码技术应用于使用半色调掩模结构分类的排列像素，以便将图像转换成压缩的多级半色调图像。

公开(公告)号：US20080225327A1

公开(公告)日：2008-09-18

申请号：US11686529

申请日：2007-03-15

申请人： Mark A. Smith

发明人： Mark A. Smith

IPC分类号： G06F3/12 ,  G06F15/00

CPC分类号： G06F3/1245 ,  G06F3/1206 ,  G06F3/122 ,  G06F3/1246 ,  G06F3/1286 ,  G06F3/1287 ,  G06F3/1288 ,  H04N1/00236 ,  H04N1/00238 ,  H04N1/33307 ,  H04N1/4105 ,  H04N2201/0067 ,  H04N2201/0082 ,  H04N2201/33328 ,  H04N2201/33378

摘要： Forced compression halftone processes and forced compression techniques may be used to forcibly compress page raster images passed between a Digital Front End (DFE) processor and a Continuous Feed (CF) printer within a CF printing system. If a DFE processor determines that a compressed image size exceeds a static or dynamically predetermined threshold, the DFE processor may re-render the image using a “forced compression” halftone process, such as 2-to-1 forced compression, 4-to-1 forced compression, reduced resolution, etc. Once the page raster image has been re-rendered, the DFE processor may use a forced compression technique, which is complementary to the applied “forced compression” halftone process to re-compress the page raster image. The approach allows page raster images to be compressed to meet interface bandwidth constraints associated with the physical interface between the DFE processor and CF print engine, thereby allowing otherwise unprintable jobs to be printed with reasonable quality.

摘要翻译： 可以使用强制压缩半色调处理和强制压缩技术来强制压缩在CF打印系统内在数字前端（DFE）处理器和连续进给（CF）打印机之间通过的页面光栅图像。 如果DFE处理器确定压缩图像大小超过静态或动态预定阈值，则DFE处理器可以使用“强制压缩”半色调处理来重新呈现图像，例如2对1强制压缩，4对1， 1强制压缩，分辨率降低等。一旦页面光栅图像被重新渲染，DFE处理器可以使用强制压缩技术，这是与应用的“强制压缩”半色调处理互补以重新压缩页面光栅图像 。 该方法允许页面光栅图像被压缩以满足与DFE处理器和CF打印引擎之间的物理接口相关联的接口带宽约束，从而允许以合理的质量打印其他不可打印的作业。

公开(公告)号：US20080100856A1

公开(公告)日：2008-05-01

申请号：US11767016

申请日：2007-06-22

申请人： Hae-kee Lee ,  Ho-keun Lee ,  Choon-woo Kim ,  Jong-ok Jee ,  Byong-tae Ryu

发明人： Hae-kee Lee ,  Ho-keun Lee ,  Choon-woo Kim ,  Jong-ok Jee ,  Byong-tae Ryu

IPC分类号： G06F15/00

CPC分类号： H04N1/4105

摘要： An image forming apparatus, including a halftone image converter to convert input image data having a plurality of bits per pixel into halftone image data having a binary pixel value corresponding to a bright pixel or a dark pixel, and a bit encoder to divide the halftone image data into blocks with a predetermined size, and to perform a bit-encoding operation by using the number of either the bright or dark pixels in the block to output encoded image data.

摘要翻译： 一种图像形成装置，包括半色调图像转换器，用于将具有每像素多个位的输入图像数据转换成具有对应于亮像素或暗像素的二进制像素值的半色调图像数据和用于分割半色调图像的位编码器 数据转换为具有预定大小的块，并且通过使用块中的亮或暗像素的数量来执行位编码操作，以输出编码图像数据。

公开(公告)号：US20080049237A1

公开(公告)日：2008-02-28

申请号：US11841160

申请日：2007-08-20

申请人： Toshiyuki Chikuma ,  Hidehiko Kanda

发明人： Toshiyuki Chikuma ,  Hidehiko Kanda

IPC分类号： G06F15/00

CPC分类号： G06K15/02 ,  B41J2/2128 ,  B41J29/38 ,  G06K15/1814 ,  H04N1/4057 ,  H04N1/4105

摘要： In an image processing apparatus, a data amount of printing data generated for each different size of dot is reduced. Specifically, in quantization to obtain data for each printing head, printing data for a large dot is set as data in which a bit number per pixel is two bits, and printing data for a medium or small dot is set as data in which a bit number per pixel is one bit. Thereby, a data amount per pixel can be reduced compared with data in which all bit numbers per pixel for the large, medium and small dots are equally two bits.

摘要翻译： 在图像处理装置中，针对每个不同大小的点生成的打印数据的数据量减少。 具体地说，在为了获得每个打印头的数据的量化中，将大点的打印数据设置为每像素的位数为2位的数据，并将用于中点或小点的打印数据设置为数据，其中位 每像素数为1位。 因此，与大，中，小点的每像素的所有比特数相等地为2比特的数据相比，可以减少每像素的数据量。

公开(公告)号：US07277585B2

公开(公告)日：2007-10-02

申请号：US10153654

申请日：2002-05-24

申请人： Takahiro Yagishita ,  Yukiko Yamazaki

发明人： Takahiro Yagishita ,  Yukiko Yamazaki

IPC分类号： G06K9/36 ,  G06K9/46

CPC分类号： H04N1/32 ,  H04N1/4105

摘要： An image encoding method forms units respectively made up of a plurality of pixels belonging to within one period of a digital image data having a periodic property, and carries out an encoding using the units as units of encoding, so that two units which are consecutively encoded are separated by an integer multiple of the period.

摘要翻译： 图像编码方法形成分别由属于具有周期性属性的数字图像数据的一个周期内的多个像素构成的单元，并且使用这些单位执行编码作为编码单位，使得连续编码的两个单元 以该周期的整数倍为单位。

公开(公告)号：US20070171439A1

公开(公告)日：2007-07-26

申请号：US10589069

申请日：2005-02-10

申请人： Toshiaki Kakutani

发明人： Toshiaki Kakutani

IPC分类号： G03F3/08

CPC分类号： H04N1/4051 ,  B41J2/2128 ,  H04N1/4105 ,  H04N1/415

摘要： The image output system of the invention collects a preset number of adjacent pixels to one pixel group to divide a number of pixels constituting an image into multiple pixel groups and specifies a pixel group tone value as a representative tone value of each pixel group. The image output system refers to a conversion table to generate dot number data of each pixel group. The conversion table stores dot number data, which represents number of dots to be created in one pixel group, in relation to a combination of a pixel group classification number allocated to each pixel group and the specified pixel group tone value of the pixel group. The image output system then refers to a priority order of pixels representing potentials of dot creation in respective pixels of one pixel group, determines the positions of dot-on pixels in each pixel group according to the generated dot number data of the pixel group, and actually creates dots according to the determined positions of the dot-on pixels. The dot number data does not include information on the positions of the dot-on pixels and has a small data volume, thus enabling high-speed data transfer. The dot number data is readily obtained by simply referring to the conversion table. This leads to high-speed output of high-quality image data. The technique of the invention thus enables easy and high-speed output of a high-quality image.

摘要翻译： 本发明的图像输出系统将预定数量的相邻像素收集到一个像素组，以将构成图像的多个像素划分为多个像素组，并将像素组色调值指定为每个像素组的代表色调值。 图像输出系统是指生成每个像素组的点数数据的转换表。 相对于分配给每个像素组的像素组分类号和像素组的指定像素组色调值的组合，转换表存储表示要在一个像素组中创建的点数的点数数据。 然后，图像输出系统参照表示一个像素组的各个像素中的点形成的电位的像素的优先顺序，根据所生成的像素组的点数数据来确定每个像素组中的点亮像素的位置，以及 实际上根据确定的点对点像素的位置创建点。 点号数据不包括关于点对点像素的位置的信息，并且具有小的数据量，从而实现高速数据传送。 通过简单地参照转换表可以容易地获得点数数据。 这导致高质量图像数据的高速输出。 因此，本发明的技术使得能够容易且高速地输出高质量的图像。

公开(公告)号：US20060227379A1

公开(公告)日：2006-10-12

申请号：US11169225

申请日：2005-06-27

申请人： Toshiaki Kakutani

发明人： Toshiaki Kakutani

IPC分类号： H04N1/40

CPC分类号： H04N1/4105

摘要： Sets of multiple pixels are grouped into pixel groups, and on the basis of tone value distribution in each pixel group, it is decided whether to divide the pixel group. For pixel groups that are not divided, a representative tone value is determined for the pixel group, and for pixel groups that are divided, a representative tone value is determined for each region created by the division. Next, from multilevel halftoning result values derived by multilevel halftoning of the representative tone values, the dot on-off state is determined for each pixel in the pixel groups, and the image is output. At this time, for divided pixel groups, the dot on-off state is determined for each pixel in the regions, based on the multilevel halftoning result value for each region. With multilevel halftoning result values, data creation and transfer can be performed rapidly. Additionally, since the dot on-off state can be determined for each pixel in a pixel group even in instances where the pixel group has a tone value distribution, images of high picture quality can be output rapidly by unit of a simple process.

摘要翻译： 多个像素的组被分组为像素组，并且基于每个像素组中的色调值分布，决定是否划分像素组。 对于未分割的像素组，针对像素组确定代表性色调值，并且对于被划分的像素组，针对由该划分创建的每个区域确定代表色调值。 接下来，从通过代表色调值的多级半色调导出的多级半色调结果值，确定像素组中的每个像素的点开关状态，并输出图像。 此时，对于分割像素组，基于每个区域的多级半色调结果值，确定区域中的每个像素的点开关状态。 通过多级半色调结果值，可以快速执行数据创建和传输。 此外，由于即使在像素组具有色调值分布的情况下，也可以针对像素组中的每个像素确定点开关状态，因此可以通过简单的处理单位快速地输出图像质量高的图像。

公开(公告)号：US20060215227A1

公开(公告)日：2006-09-28

申请号：US11241782

申请日：2005-09-29

申请人： Toshiaki Kakutani

发明人： Toshiaki Kakutani

IPC分类号： H04N1/40

CPC分类号： H04N1/40087 ,  H04N1/4105

摘要： An image printing process of the invention first specifies a pixel group tone value of each pixel group consisting of a preset number of multiple pixels and refers to one of correlation maps selected for the pixel group to convert the specified pixel group tone value to a multivalue code. Each of the correlation maps sets multivalue codes in correlation to pixel group tone values. The multivalue codes of all pixel groups constituting an image are output as control data to an image output device. The image output device determines the dot on-off state in respective pixels of each pixel group according to the received control data and actually creates dots on an output medium to complete an output image. Each correlation map referred to for the multivalue coding has a slightly lower tone resolution in a higher tone value area than in a lower tone value area. This arrangement desirably reduces the data volume of the control data, while preventing deterioration of the picture quality. The technique of the invention enables quick output of the control data and accordingly ensures high-speed output of a high-quality image by this simple procedure.

摘要翻译： 本发明的图像打印处理首先指定由预设数量的多个像素组成的每个像素组的像素组色调值，并且参考为像素组选择的相关图之一，以将指定的像素组色调值转换为多值代码 。 每个相关图都设置与像素组色调值相关的多值码。 构成图像的所有像素组的多值代码作为控制数据输出到图像输出装置。 图像输出装置根据接收到的控制数据确定各像素组的各像素中的点开关状态，并在输出介质上实际生成点以完成输出图像。 在多值编码中参考的每个相关图在较高音调区域中具有比在较低音调区域中稍低的音调分辨率。 这种布置理想地减少了控制数据的数据量，同时防止了图像质量的恶化。 本发明的技术能够快速输出控制数据，从而通过简单的过程确保高质量图像的高速输出。