公开(公告)号：US07009739B1

公开(公告)日：2006-03-07

申请号：US09699820

申请日：2000-10-30

Applicant: Ying-wei Lin ,  Jeng-nan Shiau

Inventor： Ying-wei Lin ,  Jeng-nan Shiau

IPC: H04N1/46

CPC classification number: H04N1/40012

Abstract: A continuously variable screening tool is used to generate a unique texture pattern for every color in a multicolor image. The continuously variable screening tool allows a single colorant version of the image to be generated with less information loss than typically suffered in the multicolor to single color transformation process. The continuously variable screening tool is generated by blending patterns from a set of reference screens. The reference screens are associated with selected reference colors in, for example, a machine independent color space. A calculated screen is generated through a weighted blend of reference screens located near the arbitrary color in the machine independent color space. Typically, the weights depend on the distance the arbitrary color is from each of the reference colors. The screens consist of arrays of threshold values. Each threshold value is associated with a dot position and an image pixel. Where a pixel value exceeds the associated threshold value, provision is made to place a mark in the associated dot position. An image processor operative to carry out the method comprises a continuously variable screening tool generator. An embodiment of the image processor includes a reference screen storage device and a screen blender.

Abstract translation: 使用连续可变的筛选工具为多色图像中的每种颜色生成独特的纹理图案。 连续可变的筛选工具允许以多色到单色转换过程中通常遭受的信息损失较少的信息生成图像的单一着色剂版本。 通过混合来自一组参考屏幕的图案来生成连续可变的筛选工具。 参考屏幕与例如机器独立颜色空间中的所选参考颜色相关联。 通过在机器独立颜色空间中位于任意颜色附近的参考屏幕的加权混合来生成计算屏幕。 通常，权重取决于任意颜色与每个参考颜色的距离。 屏幕由阈值阵列组成。 每个阈值与点位置和图像像素相关联。 如果像素值超过关联的阈值，则提供在相关联的点位置放置标记。 可操作地执行该方法的图像处理器包括连续可变的筛选工具发生器。 图像处理器的实施例包括参考屏幕存储设备和屏幕搅拌器。

公开(公告)号：US06356654B1

公开(公告)日：2002-03-12

申请号：US09219705

申请日：1998-12-23

Applicant: Robert P. Loce ,  Michael S. Cianciosi ,  Ying-Wei Lin

Inventor： Robert P. Loce ,  Michael S. Cianciosi ,  Ying-Wei Lin

IPC: G06K900

CPC classification number: H04N1/58

Abstract: Systems and methods for template matching of multicolored images provide an image conversion process that respectively views two, three or four input color planes through an input observation window. Single plane vectors are obtained that represent the color planes. The obtained single plane vectors are combined into a multi-plane vector that may be used in a look-up table for descreening or resolution enhancement, for example. Various interactions between color planes may be taken into account to provide optimum color space conversion. Additional information obtained by using the multi-plane vector allow performance of image processes with optimized accurate color values.

Abstract translation: 用于多色图像的模板匹配的系统和方法提供了通过输入观察窗口分别观看两个，三个或四个输入彩色平面的图像转换处理。 获得表示颜色平面的单平面向量。 获得的单平面矢量被组合成例如可以用于查看表中用于去网或分辨率增强的多平面矢量。 可以考虑色平面之间的各种相互作用，以提供最佳的颜色空间转换。 通过使用多平面矢量获得的附加信息允许以优化的精确色彩值执行图像处理。

公开(公告)号：US5029020A

公开(公告)日：1991-07-02

申请号：US437730

申请日：1989-11-17

Applicant: Paul D. Norder ,  Jagdish C. Tandon ,  Ying-wei Lin ,  Anthony F. Calarco

Inventor： Paul D. Norder ,  Jagdish C. Tandon ,  Ying-wei Lin ,  Anthony F. Calarco

IPC: H04N1/028 ,  H04N1/04 ,  H04N1/10 ,  H04N1/107 ,  H04N1/19 ,  H04N1/191

CPC classification number: H04N1/1911 ,  H04N2201/0414 ,  H04N2201/0468

Abstract: A scanner-printer of the type that scans and prints in blocks, each block consisting of a preset number of image lines, in which the block of lines scanned by the scanning array is larger than the block of lines printed by a printing array so that there is provided additional image scan lines before and after each block of image lines printed, the additional image scan lines providing image context data for use in processing image signals adjacent the boundaries between blocks of image lines.

公开(公告)号：US08368964B2

公开(公告)日：2013-02-05

申请号：US12536967

申请日：2009-08-06

Applicant: Beilei Xu ,  Robert Paul Loce ,  Chu-Heng Liu ,  Ying-wei Lin

Inventor： Beilei Xu ,  Robert Paul Loce ,  Chu-Heng Liu ,  Ying-wei Lin

IPC: H04N1/40

CPC classification number: H04N1/387 ,  G06T5/003 ,  G06T5/50 ,  G06T2207/10008 ,  G06T2207/10148 ,  G06T2207/30176

Abstract: A method for determining local defocus distance in a scanned image of a non-planar original object is provided comprising scanning at least a portion of the non-planar original object to produce first scanned image data at a first focal plane and scanning same the at least a portion of the non-planar original object to produce at least second scanned image data at a second focal plane. The first scanned image data is different from the second scanned image data wherein a distance between the first focal plane and the second focal plane is a predetermined quantity. The method further comprises estimating an out-of-focus distance of the object from the first and the second scanned image data.

Abstract translation: 提供了一种用于确定非平面原始对象的扫描图像中的局部散焦距离的方法，包括扫描非平面原始对象的至少一部分以在第一焦平面处产生第一扫描图像数据，并至少扫描至少 所述非平面原始对象的一部分在第二焦平面处产生至少第二扫描图像数据。 第一扫描图像数据与第二扫描图像数据不同，其中第一焦平面和第二焦平面之间的距离是预定量。 该方法还包括估计物体与第一和第二扫描图像数据的离焦距离。

公开(公告)号：US07706594B2

公开(公告)日：2010-04-27

申请号：US12123188

申请日：2008-05-19

Applicant: Ying-wei Lin ,  Raphael F. Bov, Jr. ,  Zhigang Fan ,  John C. Handley

Inventor： Ying-wei Lin ,  Raphael F. Bov, Jr. ,  Zhigang Fan ,  John C. Handley

IPC: G06K9/00 ,  H04N7/167

CPC classification number: G06K9/186 ,  G06K9/18

Abstract: The present disclosure is directed to a method and apparatus for applying magnetic ink character recognition (MICR) technology to enable the embedding of coded information within text characters of a document.

Abstract translation: 本公开涉及一种用于应用磁墨水字符识别（MICR）技术以使得能够在文档的文本字符内嵌入编码信息的方法和装置。

公开(公告)号：US07239430B2

公开(公告)日：2007-07-03

申请号：US10318614

申请日：2002-12-12

Applicant: Jeng-nan Shiau ,  Ying-wei Lin

Inventor： Jeng-nan Shiau ,  Ying-wei Lin

IPC: H04N1/405

CPC classification number: G06K9/00456 ,  H04N1/40062 ,  H04N1/405

Abstract: A method to detect frequency and angle of a binary halftone pattern. The method employs an exclusive-or operation which is applied locally to a region of a binary bit map and its spatially shifted version. The resulting bits from the exclusive-or operation are summed over the region. The exclusive-or operation is repeated for a range of shift values. In a halftone region, the shift at which the minimum sum occurs reflects the angle and the frequency of the halftone.

Abstract translation: 检测二进制半色调图案的频率和角度的方法。 该方法采用本地应用于二进制位图及其空间位移版本的区域的异或运算。 来自独占或操作的结果位在该区域相加。 对一系列移位值重复执行异或操作。 在半色调区域中，最小和发生的偏移反映了半色调的角度和频率。

公开(公告)号：US07218332B2

公开(公告)日：2007-05-15

申请号：US10135139

申请日：2002-04-30

Applicant: Hui Cheng ,  Ying-wei Lin

Inventor： Hui Cheng ,  Ying-wei Lin

IPC: G06T15/00

CPC classification number: H04N1/00 ,  G06T11/00 ,  H04N1/00798

Abstract: Systems and methods are presented for processing and rendering image data during a single pass through the image data. A method includes loading scanlines of image data into a rolling band buffer, performing a windowing technique on the image data, and determining if a class change was experienced by any window having a portion in an output scanline of the buffer. The method further includes processing image data in the output scanline for a window portion that experienced a class change, using a blended rendering algorithm. If no class change is detected, the method includes processing image data in the output scanline for the window portion using a class-based rendering algorithm. The method optionally includes rendering processed image data for the output scanline to a rendering device. According to other features, an apparatus includes a rolling band buffer, a windowing processor, class-based rendering algorithms, and a blended rendering algorithm.

Abstract translation: 呈现系统和方法，用于在单次传递图像数据期间处理和渲染图像数据。 一种方法包括将图像数据的扫描线加载到滚动带缓冲器中，对图像数据执行加窗技术，以及确定是否由具有缓冲器的输出扫描线中的一部分的任何窗口经历了类别改变。 该方法还包括使用混合渲染算法来处理经历类别改变的窗口部分的输出扫描线中的图像数据。 如果没有检测到类更改，则该方法包括使用基于类的呈现算法来处理窗口部分的输出扫描线中的图像数据。 该方法可选地包括将处理的输出扫描线的图像数据渲染到呈现设备。 根据其他特征，一种装置包括滚动带缓冲器，加窗处理器，基于类的渲染算法和混合渲染算法。

公开(公告)号：US07116443B2

公开(公告)日：2006-10-03

申请号：US10137677

申请日：2002-05-02

Applicant: John C. Handley ,  Ying-wei Lin

Inventor： John C. Handley ,  Ying-wei Lin

IPC: H04N1/60 ,  G03F3/08 ,  G06K9/00

CPC classification number: H04N1/56 ,  G01J3/462

Abstract: A method for neutral pixel detection using color space feature vectors wherein one color space coordinate represents lightness is provided. The method includes the following steps: a) receiving an input image represented in a first color space; b) converting the input image to a second color space wherein one coordinate represents lightness; c) selecting a pixel in the second color space representation to be classified; d) computing second color space feature vectors associated with the selected pixel; and e) classifying the selected pixel between neutral and color classes based on the values computed for the second color space feature vectors. Typically, the input image is processed using a smoothing filter to create a smoothed input image prior to the conversion to the second color space. The method can be adapted to page processing or strip processing schemes with respect to the input image.

公开(公告)号：US20050271277A1

公开(公告)日：2005-12-08

申请号：US10861310

申请日：2004-06-04

Applicant: Ying-Wei Lin ,  Shen-Ge Wang ,  Beilei Xu

Inventor： Ying-Wei Lin ,  Shen-Ge Wang ,  Beilei Xu

IPC: G03G15/00 ,  G06K9/20 ,  G06K9/34 ,  G06K9/46 ,  G06T7/40 ,  H04N1/40

CPC classification number: G06K9/00456 ,  H04N1/40062

Abstract: A system and method for classifying an image block of a printed image into contone, halftone, or error diffusion classes, includes scanning the printed image; selecting an n by n block of pixels from the scanned image in a luminance channel; calculating an array of DCT coefficients of the pixel block, wherein the calculated DCT coefficients are representative of spatial frequency and spatial orientation of the pixel block; comparing the array of DCT coefficients with an array of predetermined values, wherein the array of predetermined values are indicative of contone, halftone and error diffusion classes; and determining the image classification of the pixel block based on the comparison of the DCT coefficients with the array of predetermined values. If the image is determined to be halftone, then the method further evaluates the DCT coefficients to determine the frequency of the halftone screen.

Abstract translation: 将印刷图像的图像块分类为连续色调，半色调或误差扩散等级的系统和方法包括扫描印刷图像; 在亮度通道中从扫描图像中选择n×n个像素块; 计算所述像素块的DCT系数的阵列，其中所计算的DCT系数表示所述像素块的空间频率和空间取向; 将DCT系数阵列与预定值的阵列进行比较，其中预定值的阵列指示连续色调，半色调和误差扩散等级; 以及基于DCT系数与预定值的阵列的比较来确定像素块的图像分类。 如果图像被确定为半色调，则该方法进一步评估DCT系数以确定半色调屏幕的频率。

公开(公告)号：US06834124B1

公开(公告)日：2004-12-21

申请号：US09687111

申请日：2000-10-16

Applicant: Ying-wei Lin ,  Robert P. Loce

Inventor： Ying-wei Lin ,  Robert P. Loce

IPC: G06K940

CPC classification number: G06T5/001 ,  H04N1/40

Abstract: An adaptive image enhancement filter includes a template matching module for comparing an observed pixel pattern comprising a target pixel and one or more neighboring pixels to a set of templates to determine if the observed pixel pattern matches any of the templates. The template matching module generates a match identifier signal indicating which of the templates, if any, the observed pixel pattern is found to match. Based on this match identifier, a signal generation module provides an enhanced output signal for the target pixel. The template matching and/or the signal generation modules can be independently modified to adapt to changing conditions as identified by signals identifying image attributes and marking process attributes.

Abstract translation: 自适应图像增强滤波器包括模板匹配模块，用于将包括目标像素和一个或多个相邻像素的观察像素图案与一组模板进行比较，以确定观察到的像素图案是否匹配任何模板。 模板匹配模块生成匹配标识符信号，指示哪个模板（如果有的话）发现观察到的像素图案匹配。 基于该匹配标识符，信号生成模块为目标像素提供增强的输出信号。 可以独立地修改模板匹配和/或信号生成模块以适应由识别图像属性和标记处理属性的信号所识别的变化的条件。