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    Systems and methods for rule-based thin-line enhancement in halftone images
    1.
    发明授权
    Systems and methods for rule-based thin-line enhancement in halftone images 有权
    半色调图像中基于规则的细线增强的系统和方法

    公开(公告)号：US09338324B1

    公开(公告)日：2016-05-10

    申请号：US14708391

    申请日：2015-05-11

    申请人： XEROX CORPORATION

    发明人： Sudhagar Subbaian

    IPC分类号： H04N1/405 ,  H04N1/409 ,  G06K15/02

    CPC分类号： H04N1/4092 ,  G06K15/1844 ,  G06K15/1873 ,  G06K15/1874 ,  H04N1/405

    摘要： Embodiments of a computer-implemented method for thin-line enhancement in electronic images are disclosed. The methods include receiving a halftone image comprising multiple pixels, and associating a predefined kernel with at least a portion of the halftone image. The kernel includes multiple check cells and a processing cell, each capable of being toggled between an active state and an inactive state; detecting a state of each of the pixels in the neighborhood of an inactive pixel associated with the processing cell based on one or more predetermined rules being applied to the kernel, wherein the inactive pixel is in communication with a contiguous set of active pixels; and selectively activating the inactive pixel by activating the processing cell based on the predetermined rules, provided the inactive pixel upon being activated is separated from a neighboring active pixel.

    摘要翻译： 公开了用于电子图像中的薄线增强的计算机实现的方法的实施例。 所述方法包括接收包括多个像素的半色调图像，并且将预定义的内核与半色调图像的至少一部分相关联。 内核包括多个检查单元和处理单元，每个处理单元能够在活动状态和非活动状态之间切换; 基于施加到所述核的一个或多个预定规则来检测与所述处理单元相关联的不活动像素附近的每个像素的状态，其中所述非活动像素与连续的有源像素集合通信; 以及通过基于所述预定规则激活所述处理单元来选择性地激活所述非活动像素，只要被激活时的所述非活动像素与相邻有效像素分离。

    METHOD FOR PRODUCING CENTER SCAN IMAGE OUTPUT USING AN OVER SCAN RIP
    2.
    发明申请
    METHOD FOR PRODUCING CENTER SCAN IMAGE OUTPUT USING AN OVER SCAN RIP 审中-公开

    公开(公告)号：US20190213454A1

    公开(公告)日：2019-07-11

    申请号：US16315310

    申请日：2017-07-06

    申请人： ESKO Software BVBA

    发明人： Vincent Masselus ,  Martin Taylor

    IPC分类号： G06K15/02

    CPC分类号： G06K15/184 ,  G06K15/1842 ,  G06K15/1843 ,  G06K15/1844 ,  G06K15/1873 ,  G06K2215/006

    摘要： A raster image processing system including a computer readable media storing digital information that includes information corresponding to an image, and instructions for performing raster image processing (RIP) using an over scan RIP technique on the image to generate a bitmap. Also included is a processor configured to RIP the image using the over scan RIP technique at a multiple of the desired output pixel resolution to produce a plurality of sub-pixels per output pixel. The processor is further configured to determine each image output pixel value based on the values set for the plurality of sub-pixels of each image pixel, by firstly comparing the values of the plurality of sub-pixels to each other and, and then secondly comparing the values of the plurality of sub-pixels to a set background value if needed. The processor then sets the output pixel value based upon that second comparison, and generates a bitmap.

    IMAGE FORMING METHOD
    3.
    发明申请
    IMAGE FORMING METHOD 审中-公开

    公开(公告)号：US20180056666A1

    公开(公告)日：2018-03-01

    申请号：US15793625

    申请日：2017-10-25

    申请人： FUJIFILM Corporation

    发明人： Tomohiro MIZUNO

    IPC分类号： B41J2/205 ,  B41J2/21 ,  B41M5/00 ,  B41J2/525

    CPC分类号： B41J2/205 ,  B41J2/01 ,  B41J2/21 ,  B41J2/525 ,  B41M5/00 ,  B41M5/0023 ,  G06K15/107 ,  G06K15/1844 ,  G06K15/1876 ,  H04N1/52

    摘要： An image forming method of the present invention is an image forming method of forming a halftone image on a corrugated fibreboard recording medium using an inkjet recording device that uses magenta ink and other inks with two or more colors other than the magenta ink, and is an efficient method that does not generate a mottle in an image printed in multicolor on a corrugated fibreboard recording medium using an inkjet recording device by determining a droplet ejection position of the magenta ink and then determining droplet ejection positions of the other inks with two or more colors to be positions different from the droplet ejection position of the magenta ink.

    Image-processing apparatus
    5.
    发明授权
    Image-processing apparatus 失效
    图像处理装置

    公开(公告)号：US06978045B1

    公开(公告)日：2005-12-20

    申请号：US09408366

    申请日：1999-09-29

    申请人： Keisuke Hashimoto ,  Yoshihiko Hirota

    发明人： Keisuke Hashimoto ,  Yoshihiko Hirota

    IPC分类号： G06K9/40 ,  G06K9/48 ,  G06K15/02 ,  H04N1/409

    CPC分类号： H04N1/4092 ,  G06K15/02 ,  G06K15/1844

    摘要： In an image processor on multi-level image data, an edge direction of a target pixel is discriminated from differences in density level between the target pixel and adjacent pixels thereof. A pixel is divided into a plurality of sub-pixels, and the image is formed in the unit of sub-pixels. The density level is set for each of the sub-pixels in the target pixel in accordance with the discrimination on the edge direction of the target pixel so that the center of gravity in density is changed in the target level. Then a character edge portion is reproduced more smoothly.

    摘要翻译： 在多级图像数据中的图像处理器中，目标像素的边缘方向与目标像素与其相邻像素之间的浓度级别的差异区分开。 像素被分成多个子像素，并且以子像素为单位形成图像。 根据对目标像素的边缘方向的鉴别，对目标像素中的每个子像素设定浓度级，使得浓度的重心在目标水平上变化。 然后更平滑地再现字符边缘部分。

    Image processing apparatus to correct an image during double-sided printing
    6.
    发明授权
    Image processing apparatus to correct an image during double-sided printing 有权
    图像处理装置，用于在双面打印期间校正图像

    公开(公告)号：US08730524B2

    公开(公告)日：2014-05-20

    申请号：US12673104

    申请日：2008-08-05

    申请人： Yoshiaki Hoshino ,  Takashi Kimura ,  Masanori Hirano ,  Taku Satoh ,  Shigetoshi Hosaka ,  Masakazu Yoshida ,  Naoki Nakano ,  Shigetaka Sakakibara

    发明人： Yoshiaki Hoshino ,  Takashi Kimura ,  Masanori Hirano ,  Taku Satoh ,  Shigetoshi Hosaka ,  Masakazu Yoshida ,  Naoki Nakano ,  Shigetaka Sakakibara

    IPC分类号： G06K15/00

    CPC分类号： B41J2/21 ,  B41J3/60 ,  G06K15/02 ,  G06K15/1835 ,  G06K15/1844 ,  H04N1/409

    摘要： A disclosed image processing apparatus performs an image processing operation to execute double-side printing on both sides of an image forming medium. The image processing apparatus forms a dot font including a dot pattern of a character in a character image that has undergone a halftone process using a predetermined coefficient for mitigating show-through when the double-side printing is performed; forms a correction dot for making a correction to reduce step-like irregularities along an outline portion of the character in the character image, which correction dot is formed based on an arrangement position, a color, and a dot size of the correction dot for reproducing a gradation that has undergone the halftone process using said predetermined coefficient; and combines the dot font and the correction dot.

    摘要翻译： 所公开的图像处理装置执行图像处理操作以在图像形成介质的两侧执行双面打印。 图像处理装置在执行双面打印时形成包括使用预定系数进行半色调处理的字符图像中的字符的点阵图形，用于减轻显示; 形成用于进行校正的校正点，以减少沿着字符图像中的字符的轮廓部分的阶梯状凹凸，该校正点基于用于再现的校正点的布置位置，颜色和点尺寸形成 使用所述预定系数进行了半色调处理的灰度; 并组合点字体和校正点。

    Piece-wise print image enhancement for dot matrix printers
    8.
    发明授权
    Piece-wise print image enhancement for dot matrix printers 失效
    点阵打印机的逐张打印图像增强

    公开(公告)号：US4847641A

    公开(公告)日：1989-07-11

    申请号：US232814

    申请日：1988-08-16

    申请人： Charles Cheng-Yuan Tung

    发明人： Charles Cheng-Yuan Tung

    IPC分类号： B41J2/485 ,  B41J2/16 ,  G06K15/02 ,  G06K15/12 ,  G06T5/30 ,  H04N1/405

    CPC分类号： G06K15/02 ,  G06K15/128 ,  G06K15/1844 ,  G06K2215/0025

    摘要： Print enhancement circuitry to enhance the printed image produced by a laser beam printer is interposed between the character generator circuits and the laser drive circuits to modify the laser drive signals provided by the character generator circuits. Bit data representing successive lines of the bit map for a desired image are stored in a first-in first-out (FIFO) buffer. The bit pattern sample window having a central cell (bit) and a selected (arbitrary) number of neighboring bits is compared to a number of matching bit patterns or templates, each of which is associated with an error element or cell. When a logic matching network detects a match, a modification signal associated with a unique compensation cell (bit) is generated. The sample window central bit is then replaced (modified) with the unique compensation bit required by the matching template. In this manner, all bits in a desired bit map, or set of bit maps, are examined and their corresponding laser drive signals modified to compensate for the errors associated with the matched templates in a piece-wise manner.

    摘要翻译： 用于增强由激光束打印机产生的打印图像的打印增强电路插入在字符发生器电路和激光驱动电路之间，以修改由字符发生器电路提供的激光驱动信号。 表示所需图像的位图的连续行的位数据被存储在先进先出（FIFO）缓冲器中。 将具有中央单元（位）和选定（任意）数量的相邻位的位模式采样窗口与匹配的位模式或模板的数量进行比较，每个模式或模板与错误单元或单元相关联。 当逻辑匹配网络检测到匹配时，生成与唯一补偿单元（位）相关联的修改信号。 然后用匹配模板所需的唯一补偿位替换（修改）样本窗口中心位。 以这种方式，检查所需位图中的所有位或位映射集合，并修改其对应的激光驱动信号，以便以分段方式补偿与匹配模板相关联的错误。