利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

33 条记录 (耗时 0.016 秒)

    Corner sharpening using look-up table edge pixel identification
    1.
    发明申请
    Corner sharpening using look-up table edge pixel identification 有权
    使用查角表边缘像素识别的锐角锐化

    公开(公告)号：US20070147699A1

    公开(公告)日：2007-06-28

    申请号：US11317427

    申请日：2005-12-23

    申请人： Robert Loce ,  Beilei Xu ,  Stuart Schweid ,  Son Nguyen ,  Michael Branciforte

    发明人： Robert Loce ,  Beilei Xu ,  Stuart Schweid ,  Son Nguyen ,  Michael Branciforte

    IPC分类号： G06K9/40

    CPC分类号： G06K9/4609 ,  G06T5/003 ,  G06T5/20 ,  G06T7/13 ,  G06T2207/20164 ,  G06T2207/20192 ,  H04N1/4092

    摘要： The teachings provided herein disclose a method for corner sharpening in the display of a bitmapped digital image. The method includes the steps of selecting a target pixel location within the digital image; observing a set of pixels within a pixel observation window superimposed on the digital image relative to the target pixel location; generating edge-state codes for a plurality of pairs of neighboring vectors of pixels within the pixel observation window; generating corner-identification codes from the plurality of edge-state codes using at least one look-up table so as to thereby identify corner pixels; and, assigning a pixel value in an output image plane in a location corresponding to the target pixel in the input image, such that assigned value extends a corner where indicated by a corner identification code, thereby producing a sharpening effect. The method may be used for improving the print quality of line-art corners and other fine details as found in both font and image data.

    摘要翻译： 本文提供的教导公开了一种用于在位图数字图像的显示中进行拐角锐化的方法。 该方法包括以下步骤：在数字图像内选择目标像素位置; 观察相对于目标像素位置叠加在数字图像上的像素观察窗内的一组像素; 为所述像素观察窗口内的多个相邻像素向量对生成边缘状态代码; 使用至少一个查找表从所述多个边缘状态代码生成角标识码，从而识别角落像素; 并且在与输入图像中的目标像素相对应的位置的输出图像平面中分配像素值，使得分配值延伸由拐角识别码指示的角部，从而产生锐化效果。 该方法可以用于提高字体和图像数据中发现的线条角落的其他精细细节的打印质量。

    Tinted edge enhancement using look-up table edge pixel identification
    2.
    发明申请
    Tinted edge enhancement using look-up table edge pixel identification 失效
    有色边缘增强使用查找表边缘像素识别

    公开(公告)号：US20070146796A1

    公开(公告)日：2007-06-28

    申请号：US11318131

    申请日：2005-12-23

    申请人： Robert Loce ,  Beilei Xu ,  Stuart Schweid ,  Son Nguyen ,  Michael Branciforte

    发明人： Robert Loce ,  Beilei Xu ,  Stuart Schweid ,  Son Nguyen ,  Michael Branciforte

    IPC分类号： G06F15/00

    CPC分类号： H04N1/4055 ,  H04N1/4092

    摘要： The teachings provided herein disclose a method for producing digital image objects with enhanced halftone edges. The method operates by selecting a target pixel location within the digital image; observing a set of pixels within a pixel observation window superimposed on the digital image relative to the target pixel location; generating edge-state codes for a plurality of pairs of neighboring vectors of pixels within the pixel observation window; generating edge-identification codes from the plurality of edge-state codes using at least one look-up table; and, utilizing the edge-identification code to select and apply to the digital image at the target pixel either a first halftone screen having a first fundamental frequency and a first angle or a second halftone screen having a second fundamental frequency and a second angle, wherein the second frequency and second angle are harmonically matched to the first frequency and first angle. The method solves the problem of ragged edges on halftone tints as an automated, operation, with a computing architecture that is readily adapted to a wide variety of tinted edge conditions, and which can be readily adapted to real-time applications.

    摘要翻译： 本文提供的教导公开了一种用于产生具有增强的半色调边缘的数字图像对象的方法。 该方法通过选择数字图像内的目标像素位置来操作; 观察相对于目标像素位置叠加在数字图像上的像素观察窗内的一组像素; 为所述像素观察窗口内的多个相邻像素向量对生成边缘状态代码; 使用至少一个查找表从所述多个边缘状态代码生成边缘识别码; 并且利用边缘识别码选择并应用于目标像素处的数字图像，即具有第一基频和第一角度的第一半色调屏幕或具有第二基频和第二角度的第二半色调屏幕，其中 第二频率和第二角度与第一频率和第一角度谐波匹配。 该方法解决了作为自动化操作的半色调色调上的粗糙边缘的问题，其具有易于适应各种着色边缘条件的计算架构，并且其可以容易地适应于实时应用。

    Rank-order error diffusion image processing
    3.
    发明授权
    Rank-order error diffusion image processing 失效

    公开(公告)号：US07079289B2

    公开(公告)日：2006-07-18

    申请号：US09968651

    申请日：2001-10-01

    申请人： Robert P. Loce ,  Michael Branciforte ,  Beilei Xu

    发明人： Robert P. Loce ,  Michael Branciforte ,  Beilei Xu

    IPC分类号： H04N1/40

    CPC分类号： H04N1/4052

    摘要： Error is distributed to pixels neighboring a pixel of interest based on a ranking of the neighboring pixels. The ranking is based on pixel values of the neighboring pixels. Optionally a spatial weighting is applied to the pixel values before ranking, to provide a preference for pixels closest to the pixel of interest or to a particular portion of a related halftone screen. Rank order based error diffusion provides compact halftone dots without patterning artifacts. An image processing system operative to perform rank order error diffusion includes a pixel ranker and an error diffuser. In a xerographic environment the image processing system includes a xerographic printer.

    Logic-based image processing method
    4.
    发明授权
    Logic-based image processing method 有权
    基于逻辑的图像处理方法

    公开(公告)号：US06297889B1

    公开(公告)日：2001-10-02

    申请号：US09218688

    申请日：1998-12-22

    申请人： Robert P. Loce ,  Michael Branciforte ,  Ying-wei Lin

    发明人： Robert P. Loce ,  Michael Branciforte ,  Ying-wei Lin

    IPC分类号： G06K1502

    CPC分类号： G06T5/20 ,  H04N1/58

    摘要： A method for processing digital images to be displayed, stored, or printed, to eliminate blooming and other artifacts. The system utilizes morphological processes to isolate and modify image structures susceptible to marking process artifacts and then combines the modified image structures with the input image to produce a printable image that may be rendered on a given printer.

    摘要翻译： 一种用于处理要显示，存储或打印的数字图像的方法，以消除起霜和其他伪像。 该系统利用形态学过程来分离和修改易受标记过程伪像影响的图像结构，然后将修改的图像结构与输入图像组合，以产生可在给定打印机上呈现的可打印图像。

    PDL operator overloading for line width management
    8.
    发明授权
    PDL operator overloading for line width management 有权
    PDL运算符重载线宽管理

    公开(公告)号：US06201551B1

    公开(公告)日：2001-03-13

    申请号：US09162762

    申请日：1998-09-30

    申请人： Robert Paul Loce ,  Michael Branciforte ,  Grace T. Brewington ,  Ann Marie Cecchi

    发明人： Robert Paul Loce ,  Michael Branciforte ,  Grace T. Brewington ,  Ann Marie Cecchi

    IPC分类号： G06T1160

    CPC分类号： G06T11/203

    摘要： A method and apparatus for overloading operators in Page Description Language (PDL) defined graphics redefines the graphic, such as to compensate for certain undesirable line growth characteristics of a target printer or display device. Line width can be controlled based on various attributes, such as color, size, width, pattern or orientation. Line width can be redefined to be wider, narrower or of a differing color to achieve a desired printed graphic. Also, the method and apparatus can compensate for fill in of reverse-line and “cookie-cutter” holes. The method, performed within a decomposer, examines individual lines of a PDL defined graphic, determines if compensation is needed to achieve a desired printed output, and redefines an operator to achieve the compensation. The compensation can include addition of wider reverse (white) lines under colored lines to prevent the fill in.

    摘要翻译： 用于在页面描述语言（PDL）定义的图形中重载操作符的方法和装置重新定义图形，以补偿目标打印机或显示设备的某些不期望的行增长特性。 可以根据各种属性（如颜色，大小，宽度，图案或方向）来控制线条宽度。 线宽可以重新定义为更宽，更窄或不同的颜色，以实现所需的打印图形。 此外，该方法和装置可以补偿反向线和“饼干”孔的填充。 在分解器中执行的方法检查PDL定义图形的各行，确定是否需要补偿来实现所需的打印输出，并重新定义操作者以实现补偿。 补偿可以包括在彩色线下添加更宽的反转（白色）线以防止填充。

    Adaptive spatial gamut mapping via dynamic thresholding
    10.
    发明授权
    Adaptive spatial gamut mapping via dynamic thresholding 有权
    通过动态阈值进行自适应空间色域映射

    公开(公告)号：US08265387B2

    公开(公告)日：2012-09-11

    申请号：US12429429

    申请日：2009-04-24

    申请人： Vishal Monga ,  Raja Bala ,  Michael Branciforte

    发明人： Vishal Monga ,  Raja Bala ,  Michael Branciforte

    IPC分类号： G06K9/00

    CPC分类号： H04N1/6069

    摘要： What is disclosed is a novel system and method for performing spatial gamut mapping on a received input color image having a plurality of pixels. A standard gamut-mapping algorithm is applied to the input color image to produce a gamut-mapped color image. A difference is computed between a selected channel of the input color image and the gamut-mapped image to produce a difference image. A local measure of complexity is derived for a given pixel in the difference image. One or more parameter values of a spatial bilateral filter are obtained from a lookup table based on the computed local measure of complexity. The spatial bilateral filter is applied, using the obtained parameter values, to the current pixel of the difference image to produce a modified pixel in a modified difference image. Thereafter, a modified gamut-mapped color image is obtained from the modified difference image and the gamut-mapped color image.

    摘要翻译： 所公开的是用于对具有多个像素的接收输入彩色图像执行空间色域映射的新型系统和方法。 将标准色域映射算法应用于输入彩色图像以产生色域映射彩色图像。 在输入彩色图像的选定通道和色域映射图像之间计算差异以产生差分图像。 导出差分图像中给定像素的局部度量度量。 基于所计算的本地复杂度测量，从查找表获得空间双边滤波器的一个或多个参数值。 使用获得的参数值将空间双边滤波器应用于差分图像的当前像素，以产生经修改的差分图像中的修改像素。 此后，从修改的差分图像和色域映射彩色图像获得修改的色域映射彩色图像。