公开(公告)号：US08031363B2

公开(公告)日：2011-10-04

申请号：US10404972

申请日：2003-03-31

申请人： Jonathan Marsden ,  Richard A. Falk ,  David Macy

发明人： Jonathan Marsden ,  Richard A. Falk ,  David Macy

IPC分类号： H04N1/52 ,  H04N1/46

CPC分类号： H04N1/4058 ,  H04N1/52

摘要： Methods and apparatus are provided for dynamically halftoning image data, substantially in real-time. Halftone threshold values are calculated and stored in memory, and halftone output values are calculated for the portions of the image data that will be displayed on a display device. Halftone screen parameters may be modified, and new halftone screen threshold values may be calculated for any affected halftone screens. For unaffected halftone screens, the previously stored threshold values may be retrieved from memory. In addition, the portion of the image to be displayed may be modified, and the halftone output values of the new portion may be calculated and then displayed.

摘要翻译： 提供了基本上实时地动态地对图像数据进行半色调的方法和装置。 半色调阈值被计算并存储在存储器中，并且对于将在显示装置上显示的图像数据的部分计算半色调输出值。 可以修改半色调屏幕参数，并且可以为任何受影响的半色调屏幕计算新的半色调屏幕阈值。 对于未受影响的半色调屏幕，可以从存储器检索先前存储的阈值。 此外，可以修改要显示的图像的部分，并且可以计算并显示新部分的半色调输出值。

公开(公告)号：US07944587B2

公开(公告)日：2011-05-17

申请号：US11887509

申请日：2006-03-24

申请人： Hiroaki Takita ,  Takayuki Ohkubo

发明人： Hiroaki Takita ,  Takayuki Ohkubo

IPC分类号： H04N1/40

CPC分类号： G06T5/008 ,  B41J2/36 ,  G06T2207/20021 ,  H04N1/4057 ,  H04N1/4058

摘要： An image data generation device is provided with: an image data acquisition unit for acquiring image data; a division unit for spatially dividing the acquired data by a plurality of matrices; a priority order setting element for setting the priority order for performing gradation conversion of picture elements that make up the image data that corresponds to each of the matrices, and sets the priority order so that the priority order becomes lower going from picture elements located in the center of the matrix toward picture elements located on the outside edges of the matrix; a gradation conversion member for performing gradation conversion of the picture elements according to the priority order; and an image data generation unit for generating image data for printing based on a dot pattern that is formed by the picture elements after the gradation conversion.

摘要翻译： 一种图像数据生成装置具有：图像数据获取单元，用于获取图像数据; 分割单元，用于通过多个矩阵对所获取的数据进行空间分割; 优先顺序设定元件，用于设定用于执行构成与每个矩阵相对应的图像数据的图像元素的灰度转换的优先顺序，并且设置优先级顺序，使得优先顺序从位于 矩阵的中心位于位于矩阵的外边缘上的图像元素; 灰度转换部件，用于根据优先级顺序执行图像元素的灰度转换; 以及图像数据生成单元，用于基于由灰度转换后的图像元素形成的点图案来生成用于打印的图像数据。

公开(公告)号：USRE41604E1

公开(公告)日：2010-08-31

申请号：US12557313

申请日：2000-03-16

申请人： William Frederick Ashworth

发明人： William Frederick Ashworth

IPC分类号： H04N1/405

CPC分类号： H04N1/52 ,  H04N1/4058

摘要： The patterns can be used to reduce one or more undesirable effects such as moire or colour shift in coloured halftone images. Colour screens in the images are based on a combination of non-orthogonal mesh structures with parcels of printing dots which have common shape and size. Preferably the dots grow in mid tones by extending first towards their second, third or fourth nearest neighbours.

摘要翻译： 这些图案可以用于减少一个或多个不期望的效果，例如着色半色调图像中的莫尔条纹或颜色偏移。 图像中的彩色屏幕基于非正交网格结构与具有共同形状和大小的打印点的包裹的组合。 优选地，通过首先向其第二，第三或第四最近邻居延伸，中点生长。

公开(公告)号：US07746502B2

公开(公告)日：2010-06-29

申请号：US11004024

申请日：2004-12-02

申请人： Kei Yasutomi ,  Takeshi Ogawa ,  Toshihiro Takesue

发明人： Kei Yasutomi ,  Takeshi Ogawa ,  Toshihiro Takesue

IPC分类号： G06K15/00 ,  H04N1/405

CPC分类号： H04N1/4058

摘要： A main vector: m^=(mx, my) and a sub-vector: s^=(sx, sy) determining cyclic structure of a basic matrix are defined, and a positional vector for a pixel configuring the basic matrix Pi^=(Pix, Piy) is defined, where the suffix i denotes an i-th pixel configuring the basic matrix. Then, the pixels configuring the basic matrix are arranged in such a manner as to satisfy the cyclic structure, and transformation of Pi^→Pi^+km^+ls^ is carried out where k and l are arbitrary integers, and may be negative values. Then a new shape of the basic matrix is obtained with Pi^+km^+ls^ as a new pixel positional vector Pi^.

摘要翻译： 定义主矢量：m ^ =（mx，my）和子向量：确定基本矩阵的循环结构的s ^ =（sx，sy），并且构成基本矩阵的像素的位置向量Pi ^ = （Pix，Piy），其中后缀i表示构成基本矩阵的第i个像素。 然后，构成基本矩阵的像素以满足循环结构的方式进行排列，并且进行Pi ^→Pi ^ + km ^ + ls ^的变换，其中k和l是任意整数，并且可以是负的 价值观。 然后以Pi ^ + km ^ + ls ^作为新的像素位置向量Pi ^获得基本矩阵的新形状。

公开(公告)号：US20090257073A1

公开(公告)日：2009-10-15

申请号：US12102929

申请日：2008-04-15

申请人： HUNG M. PHAM

发明人： HUNG M. PHAM

IPC分类号： G06F15/00

CPC分类号： H04N1/409 ,  H04N1/4058 ,  H04N1/506

摘要： What is disclosed is a novel system and method for minimizing visual artifacts, such as ROS skew and laserbeam bow, in a brick-layer halftone structure. The present method involves determining a line pattern from ROS skew and laserbeam bow profiles which traverses through successive halftone cells displacing pixels along scanlines in the process direction. The amount of displacement is varied as a function of the cross-process location as determined by the line pattern. Pixels along scanlines are shifted in a direction defined by the error profiles. In each halftone cell within which the line pattern traverses, extra pixels (empty pixel spaces created in the halftone cell by the shifting operation) are filled with lost pixels (pixels bumped from the halftone cell during the shifting operation) such that overall density of the halftone cell is maintained. The lost pixels are buffered such that lost pixels are preserved.

摘要翻译： 公开的是一种用于在砖层半色调结构中最小化视觉伪像的新颖的系统和方法，例如ROS偏斜和激光束。 本方法包括确定来自ROS歪斜的线条图案和穿过连续半色调细胞的激光束弓形轮廓，沿着扫描线沿着处理方向移位像素。 位移量根据由线图案确定的交叉处理位置的函数而变化。 沿着扫描线的像素沿错误轮廓定义的方向移动。 在线图案所穿过的每个半色调单元中，通过移动操作的多余像素（在半色调单元中产生的空白像素空间）被填充有丢失的像素（在移动操作期间从半色调单元撞击的像素），使得 维持半色调细胞。 丢失的像素被缓冲，使得丢失的像素被保留。

公开(公告)号：US20090213433A1

公开(公告)日：2009-08-27

申请号：US12364571

申请日：2009-02-03

申请人： Nobuhiko Nakahara

发明人： Nobuhiko Nakahara

IPC分类号： H04N1/405 ,  H04N1/60

CPC分类号： H04N1/52 ,  H04N1/4056 ,  H04N1/4058

摘要： Disclosed is a method of generating a screen for an image processing apparatus, which reproduces a multi-gradation image in one pixel using a PWM technique for controlling a pulse width and reference position data. The method includes inputting image data with a first resolution, virtually increasing the first resolution to a second resolution using the reference position data, and generating a screen with the second resolution with respect to the image data using two reference vectors based on the reference position data.

摘要翻译： 公开了一种生成用于图像处理装置的屏幕的方法，该方法使用用于控制脉冲宽度和参考位置数据的PWM技术再现一个像素中的多灰度图像。 该方法包括以第一分辨率输入图像数据，使用参考位置数据将第一分辨率虚拟地增加到第二分辨率，并且使用基于参考位置数据的两个参考矢量生成关于图像数据的具有第二分辨率的屏幕 。

公开(公告)号：US07477421B2

公开(公告)日：2009-01-13

申请号：US11051855

申请日：2005-02-04

申请人： Robert A. Fry

发明人： Robert A. Fry

IPC分类号： G06K15/00 ,  H04N1/405 ,  H04N1/46

CPC分类号： H04N1/4058

摘要： A method for mapping a point (pixel) outside a halftone cell to a point inside the halftone cell by determining the size of a rectangle which is tiled exactly by the halftone cell. If the size of the rectangle permits, a threshold array is employed to render the pixel. Otherwise, the pixel is rendered by calculating four potential solutions and selecting one of the four potential solutions based on the where the four potential solutions are located with respect to the halftone cell.

摘要翻译： 通过确定由半色调单元精确地平铺的矩形的大小，将半色调单元之外的点（像素）映射到半色调单元内的点的方法。 如果矩形的大小允许，则使用阈值数组来渲染像素。 否则，通过计算四个潜在解决方案并基于四个电位解决方案相对于半色调单元位置的四个潜在解中的一个来渲染像素。

公开(公告)号：US07391537B2

公开(公告)日：2008-06-24

申请号：US10952413

申请日：2004-09-28

申请人： Reiner Eschbach ,  Shen-Ge Wang ,  William A. Fuss

发明人： Reiner Eschbach ,  Shen-Ge Wang ,  William A. Fuss

IPC分类号： H04N1/405 ,  H04N1/387 ,  B41M3/10 ,  G06K15/14 ,  G06F3/048

CPC分类号： H04N1/4058 ,  H04N1/00838 ,  H04N1/00883 ,  H04N1/54

摘要： The present disclosure relates to providing a user interface for the effective generation of differential gloss images. The user is instructed to indicate the base primary image data, and the desired gloss image data. This data may be displayed for verification and position adjustment by superimposition of the gloss image data upon the base image data. In an alternative, the placement information may be inferred from the position of originals upon the scanner or copier platen and the result may or may not be displayed. By selectively applying halftones with different anisotropic structure orientation characteristics to the base primary image data as directed by the desired gloss image data, a differential gloss image file or hardcopy may be provided.

摘要翻译： 本公开涉及提供用于有效产生差异光泽图像的用户界面。 指示用户指示基本主要图像数据和所需的光泽图像数据。 可以通过将光泽图像数据叠加在基本图像数据上来显示该数据以进行验证和位置调整。 或者，可以从扫描仪或复印机台板上的原稿的位置推断放置信息，并且可以显示或不显示结果。 通过按照期望的光泽图像数据的指示，将具有不同各向异性结构取向特性的半色调选择性地应用于基本主图像数据，可以提供差异光泽图像文件或硬拷贝。

公开(公告)号：US07355756B2

公开(公告)日：2008-04-08

申请号：US10821946

申请日：2004-04-12

申请人： Toru Fujita

发明人： Toru Fujita

IPC分类号： G06K15/00

CPC分类号： H04N1/52 ,  H04N1/4058

摘要： An image reproduction engine which causes toner to adhere to a development region of certain area located at a certain position within dots according to image reproduction data is utilized for image processing, wherein a halftone is expressed by means of halftone spots formed from a plurality of dots. The centroid of the halftone spot formed from a single dot or a plurality of adjacent dots is shifted from the center of the dot to an arbitrary position, thus achieving desired screen angles or desired pitches of halftone spots. As a result, screen angles related to an irrational tangent can be realized, and the pitches of halftone spots of a plurality of color screens can also be made uniform.

摘要翻译： 利用使图像再现引擎根据图像再现数据粘附在位于点内的某个位置的某个区域的显影区域的图像再现引擎，其中通过由多个点形成的半色调点来表示半色调 。 由单点或多个相邻点形成的半色调点的质心从点的中心移动到任意位置，从而实现期望的屏幕角度或期望的半色调间距。 结果，可以实现与无理正切相关的屏幕角度，并且也可以使多个彩色屏幕的半色调点的间距均匀。

公开(公告)号：US07342696B2

公开(公告)日：2008-03-11

申请号：US10646803

申请日：2003-08-25

申请人： Douglas Curry ,  David Goldberg

发明人： Douglas Curry ,  David Goldberg

IPC分类号： H04N1/46 ,  G06K9/38

CPC分类号： H04N1/4058 ,  H04N1/405

摘要： The amount of moiré in halftone printed images is reduced using unique moiré intensity functions and moiré vectors in a halftoner. In various embodiments, moiré phase angle zones are determined over the full field of an image and high addressability units in the full-field moiré phase angle zones of the image are adjusted, including in an iterative manner, until they significantly reduce the moiré. A useful relationship between halftoner memory locations and moiré phase angle zones in a full field image is determined. The moiré that occurs in a halftone image is quantified and moiré compensation values obtained are then used to generate an inverse moire amount which is used to compensate for the moiré.

摘要翻译： 半色调印刷图像中的莫尔数量通过在半色调中使用独特的莫尔强度函数和莫尔矢量来减少。 在各种实施例中，在图像的全场上确定莫尔相位角区域，并且包括以迭代方式调整图像的全场莫尔相位角区域中的高可寻址性单位，直到它们显着减少莫尔条纹。 确定全场图像中的半色调记忆位置和莫尔相位角区域之间的有用关系。 在半色调图像中发生的波纹被量化，然后使用获得的莫尔补偿值来产生用于补偿波纹的反莫尔量。