公开(公告)号：US07119924B2

公开(公告)日：2006-10-10

申请号：US09966030

申请日：2001-09-28

Applicant: Salil Prabhakar ,  Raja Bala ,  Hui Cheng ,  John C. Handley ,  Ying-wei Lin

Inventor： Salil Prabhakar ,  Raja Bala ,  Hui Cheng ,  John C. Handley ,  Ying-wei Lin

IPC: G06F15/00

CPC classification number: G06T7/90 ,  G06T7/11 ,  G06T2207/30176

Abstract: A process for color graphics image processing, related to detection and segmentation of sweeps, is provided. An input graphics image is transformed into a three-dimensional histogram in an appropriate color space 104 (e.g., CIELUV). Two-dimensional histograms are estimated from the three-dimensional histogram 106. The two-dimensional histograms are processed to detect and segment sweeps 108. Sweep segment information from the processing of the two-dimensional histograms is combined 110. The combined sweep segment information is used to process the input graphics image to identify and segment sweeps 112. Post-processing may be optionally and selectively used to reject false alarms (i.e., areas falsely identified as sweeps) 114.

公开(公告)号：US07058350B2

公开(公告)日：2006-06-06

申请号：US09683536

申请日：2002-01-16

Applicant: Bing R. Hsieh ,  Ying-wei Lin ,  Leon C. Williams

Inventor： Bing R. Hsieh ,  Ying-wei Lin ,  Leon C. Williams

IPC: G03G15/00

CPC classification number: H04N1/00551 ,  H04N1/00519

Abstract: A platen cover for an imaging device such as a copier or scanner includes a substrate and at least of portion of the surface of the substrate is coated with a fluorescent coating. Preferably, the substrate has a dark or black color. The dark color of the substrate substantially reduces or eliminates show through of an image on the backside of an original document when the platen cover is not exposed to a light source for imaging. At the same time, when holes or uneven borders are present in the original document, the fluorescent coating fluoresces upon exposure to the light source at these regions of the original document, making these portions appear white in the replicated image and thereby substantially reducing or eliminating the unsightly appearance of these portions as black portions in the replicated image.

公开(公告)号：US06947597B2

公开(公告)日：2005-09-20

申请号：US09965880

申请日：2001-09-28

Applicant: Ying-wei Lin ,  Stuart A. Schweid ,  Jeng-nan Shiau ,  Raja Bala ,  Zhigang Fan

Inventor： Ying-wei Lin ,  Stuart A. Schweid ,  Jeng-nan Shiau ,  Raja Bala ,  Zhigang Fan

IPC: G06K9/20 ,  G06T5/00 ,  H04N1/40 ,  G06K9/62

CPC classification number: H04N1/40062 ,  G06K9/00456

Abstract: A method and system for image processing, in conjunction with classification of images between natural pictures and synthetic graphics, using SGLD texture (e.g., variance, bias, skewness, and fitness), color discreteness (e.g., R_L, R_U, and R_V normalized histograms), or edge features (e.g., pixels per detected edge, horizontal edges, and vertical edges) is provided. In another embodiment, a picture/graphics classifier using combinations of SGLD texture, color discreteness, and edge features is provided. In still another embodiment, a “soft” image classifier using combinations of two (2) or more SGLD texture, color discreteness, and edge features is provided. The “soft” classifier uses image features to classify areas of an input image in picture, graphics, or fuzzy classes.

Abstract translation: 一种用于图像处理的方法和系统，结合使用SGLD纹理（例如，方差，偏差，偏度和适应度）的自然图像和合成图像之间的图像分类，颜色离散性（例如，R_L，R_U和R_V归一化直方图 ）或边缘特征（例如，每个检测到的边缘的像素，水平边缘和垂直边缘）。 在另一个实施例中，提供了使用SGLD纹理，颜色离散性和边缘特征的组合的图片/图形分类器。 在另一个实施例中，提供了使用两（2）或更多SGLD纹理，颜色离散性和边缘特征的组合的“软”图像分类器。 “软”分类器使用图像特征来对图像，图形或模糊类中的输入图像的区域进行分类。

公开(公告)号：US06839152B2

公开(公告)日：2005-01-04

申请号：US09731131

申请日：2000-12-06

Applicant: Zhigang Fan ,  Ying-Wei Lin ,  Hong Li

Inventor： Zhigang Fan ,  Ying-Wei Lin ,  Hong Li

IPC: G06T5/00 ,  G06T5/20 ,  H04N1/40 ,  H04N1/405 ,  G06K15/00

CPC classification number: H04N1/40075

Abstract: An adaptive filtering method and apparatus for descreening a scanned halftoned image representation is disclosed. The apparatus includes an image input subsystem; a processing subsystem for processing halftoned image data provided by the image input subsystem; and software/firmware means operative on the processing subsystem for a) low-pass filtering a halftoned input pixel value provided by the image input subsystem to produce a low-pass filtered pixel value; b) notch-filtering the halftoned input pixel value to produce a notch-filtered pixel value; c) determining a local contrast value for the halftoned input pixel value; and d) producing a descreened output pixel value based on the low-pass filtered pixel value, the notch-filtered pixel value, or a combination of the low-pass filtered pixel value and the notch-filtered pixel value depending on the local contrast value.

公开(公告)号：US06285463B1

公开(公告)日：2001-09-04

申请号：US09219276

申请日：1998-12-22

Applicant: Ying-wei Lin ,  Katherine Loj

Inventor： Ying-wei Lin ,  Katherine Loj

IPC: H04N158

CPC classification number: G06K15/02 ,  G06K2215/0094 ,  H04N1/58

Abstract: The present invention is a method and apparatus to minimize and prevent blooming problems in color image systems. Particular applicability is found where an image on image system is employed. The invention is inserted into the colorant driving signal path of the system. The invention places an averaging circuit in the path of one or more colorant driving signal streams. The averaging circuit produces an average value signal representative of a small area of its respective colorant. A modulator or other signal varying device responsive to the average value signal is placed in the path of yet another but separate colorant driving signal stream. In this manner the separate colorant driving signal is modulated or varied in response to the average neighboring value of a different color thus minimizing and preventing image blooming.

Abstract translation: 本发明是一种减少和防止彩色图像系统中的起霜问题的方法和装置。 在使用图像系统上的图像时发现特殊的适用性。 本发明被插入到系统的着色剂驱动信号路径中。 本发明在一个或多个着色剂驱动信号流的路径中设置平均电路。 平均电路产生代表其各自着色剂的小面积的平均值信号。 响应于平均值信号的调制器或其它信号变化设备被放置在另一个但是分开的着色剂驱动信号流的路径中。 以这种方式，响应于不同颜色的平均相邻值来调制或改变单独的着色剂驱动信号，从而最小化并防止图像变亮。

公开(公告)号：US5859931A

公开(公告)日：1999-01-12

申请号：US653981

申请日：1996-05-28

Applicant: Zhigang Fan ,  Ying-wei Lin

Inventor： Zhigang Fan ,  Ying-wei Lin

IPC: H04N1/417 ,  G06T9/00 ,  H03M7/46 ,  H04N1/41 ,  G06K9/36

CPC classification number: H04N1/4105 ,  G06T9/004 ,  G06T9/005

Abstract: An encoding/compression technique using a combination of predictive coding and run length encoding allows for efficient compression of images produced by error diffusion.

Abstract translation: 使用预测编码和游程长度编码的组合的编码/压缩技术允许有效地压缩由误差扩散产生的图像。

公开(公告)号：US5553171A

公开(公告)日：1996-09-03

申请号：US507064

申请日：1995-07-26

Applicant: Ying-wei Lin ,  Jeng-Nan Shiau

Inventor： Ying-wei Lin ,  Jeng-Nan Shiau

IPC: H04N1/387 ,  G06T3/40 ,  G06T5/20 ,  H04N1/40 ,  G06K9/36

CPC classification number: G06T3/4007 ,  H04N1/40068

Abstract: A method of arbitrary image resolution conversion takes an original print ready image at a first resolution and orientation and simulates printing of that image by creating a representation of a page at a particular resolution and orientation using a suitable spot model for the reconstruction function. The image is then filtered with a low pass filter and sampled with an aperture that corresponds to the desired output. The image data, which may be definable at several bits per pixel, is then made print-ready by reducing the number of bits defining each pixel to a valid output state. The reduction step is accomplished through error diffusion methods that maintain the local area gray density level. The filtering step reduces moire in the converted image.

Abstract translation: 任意图像分辨率转换的方法以第一分辨率和方向获取原始打印准备好的图像，并且通过使用用于重建功能的合适的斑点模型以特定分辨率和取向创建页面的表示来模拟该图像的打印。 然后用低通滤波器过滤图像，并用对应于期望输出的孔进行采样。 然后，可以通过将每个像素的几个比特定义的图像数据通过将定义每个像素的比特数减少到有效输出状态来进行打印准备。 还原步骤通过维持局部区域灰度密度水平的误差扩散方法来实现。 过滤步骤减少转换图像中的莫尔条纹。

公开(公告)号：US4705387A

公开(公告)日：1987-11-10

申请号：US563729

申请日：1983-12-21

Applicant: Ying-wei Lin

Inventor： Ying-wei Lin

IPC: G03G21/10 ,  G03G21/00

CPC classification number: G03G21/10 ,  G03G2221/0005

Abstract: Apparatus for removing residual charged particles from a charge retentive surface characterized by a particle removal roller and a detoning roller, the former of which is adapted to remove the residual particles from the charge retentive surface and the latter of which removes the particles transferred to the particle removal roller. The detoning roller comprises an array of conductive electrodes extending about the circumference thereof such that when a multi-phase power source is applied thereto a travelling electrostatic wave is generated which causes charged particles having a predetermined diameter and charge to be moved axially of the detoning roller towards one end thereof. The particles so moved represent toner devoid of paper debris. Thus they are suitable for reuse.

Abstract translation: 用于从电荷保持性表面除去残留带电粒子的装置，其特征在于除粒辊和分离辊，其中前者适于从所述电荷保持性表面除去残留的颗粒，并且其中的颗粒除去转移到颗粒中的颗粒 清除辊。 所述定影辊包括围绕其圆周延伸的导电电极的阵列，使得当将多相电源施加到其上时，产生行进的静电波，其使具有预定直径的带电粒子和电荷沿着所述分离辊轴向移动 朝向其一端。 如此移动的颗粒代表没有纸屑的调色剂。 因此它们适合重复使用。

公开(公告)号：US07424151B2

公开(公告)日：2008-09-09

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: G06K9/34

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：US07031543B2

公开(公告)日：2006-04-18

申请号：US10032464

申请日：2002-01-02

Applicant: Hui Cheng ,  Ying-wei Lin ,  Stuart A. Schweid

Inventor： Hui Cheng ,  Ying-wei Lin ,  Stuart A. Schweid

IPC: G66K9/40

CPC classification number: G06T5/30 ,  G06T5/005 ,  G06T2207/10008

Abstract: An annular window-shaped structuring element is provided for image processing to remove speckles from a scanned image. The window-shaped structuring element is composed of two differently sized squares sharing the same geometric center-point. The pixel to be analyzed with the structuring element is at the center-point. The structuring element is used in a method to remove speckles from binary, grayscale, and/or color images by first eroding the image, detecting speckles relative to other pixels in the image, and removing declared speckles. The method may additionally include a halftoning module to protect halftone images.