Patents by Inventor Ying Wei

Ying Wei has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20030202702
    Abstract: A method and apparatus for processing and rendering image data during a single pass through the image data is provided. In one aspect, the method includes: a) loading image data into a rolling band buffer; b) performing windowing on the image data; c) determining if a class change was experienced by any window having a portion in the output scanline of the buffer; d) if a class change was experienced, processing image data in the output scanline for that window portion using a blended rendering algorithm; and e) if a class change was not experienced, processing image data in the output scanline for that window portion using a class-based rendering algorithm. In another aspect, the method also includes rendering the processed image data for the output scanline of the buffer to a rendering device. The apparatus includes: a rolling band buffer; a windowing processor; class-based rendering algorithms; and a blended rendering algorithm.
    Type: Application
    Filed: April 30, 2002
    Publication date: October 30, 2003
    Applicant: XEROX CORPORATION
    Inventors: Hui Cheng, Ying-wei Lin
  • Publication number: 20030182320
    Abstract: A method for version recording and tracking. First, a file is stored into a data directory. Thereafter, the checksum of the file is calculated. Then, the version information, the filename, the size, and the checksum of the file are stored into the data directory. When a file needs to track its version information, the checksum of the file is calculated. Then, a data directory is searched to obtain the version information according to the checksum, the filename, and the size of the file.
    Type: Application
    Filed: September 24, 2002
    Publication date: September 25, 2003
    Inventors: Mu-Hsuan Lai, Ying-Wei Hsu
  • Publication number: 20030133172
    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.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 17, 2003
    Inventors: Bing R. Hsieh, Ying-Wei Lin, Leon C. Williams
  • Publication number: 20030133163
    Abstract: A watermarked image generator includes a watermark data source that inputs watermark data to a watermark embedding device. The watermark embedding device halftones the input image to generate the output image made of 2×2 binary patterns, the 2×2 binary patterns forming the watermarks embedded in the output image. The watermark embedding device includes a tri-level error diffusion generator that performs tri-level error diffusion on the input image by halftoning the input image into black, white and 50% gray. A plurality of halftoning circuits successively replace each pixel of the halftoned input image with one of a plurality of the 2×2 binary patterns. The one of the plurality of 2×2 binary patterns corresponds to at least one respective bit of the watermark data when a pixel of the halftoned image data is 50% gray. The watermark data can be segmentation map data of the input image.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 17, 2003
    Inventors: Shen-ge Wang, Hui Cheng, Zhigang Fan, Ying-wei Lin
  • Publication number: 20030123749
    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.
    Type: Application
    Filed: January 2, 2002
    Publication date: July 3, 2003
    Applicant: XEROX CORPORATION
    Inventors: Hui Cheng, Ying-wei Lin, Stuart A. Schweid
  • Patent number: 6549656
    Abstract: A digital image processing system for automatically segmenting a set of input image signals into a combination of predetermined classes of imagery, the set of input image signals forming part of a video image generated by an image input terminal. The system includes a classification circuit that receives the set of input image signals and classifies them as a ratio of the predetermined classes of imagery. A plurality of image processing circuits also receives the set of input image signals, each of which is adapted to process a unique class of imagery selected from the predetermined classes of imagery to generate a set of output image signals for that predetermined class of imagery.
    Type: Grant
    Filed: April 2, 1996
    Date of Patent: April 15, 2003
    Assignee: Xerox Corporation
    Inventor: Ying-wei Lin
  • Publication number: 20030063097
    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.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Applicant: XEROX CORPORATION
    Inventors: Salil Prabhakar, Raja Bala, Hui Cheng, John C. Handley, Ying-wei Lin
  • Publication number: 20030063803
    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.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 3, 2003
    Applicant: Xerox Corporation
    Inventors: Ying-Wei Lin, Stuart A. Schweid, Jeng-Nan Shiau, Raja Bala, Zhigang Fan
  • Publication number: 20020183949
    Abstract: A system for dynamically monitoring the stability of manufacturing equipment comprises a process executor requesting a plurality of semi-manufactured products processed by the manufacturing equipment to be inspected at a first sampling rate and receiving a plurality of inspection results, a data processor analyzing the inspection results from the process executor to determine a second sampling rate, a storage device storing the second sampling rate, and a controller receiving the second sampling rate from the storage device and changing the first sampling rate of the inspection requested by the process executor to the second sampling rate.
    Type: Application
    Filed: August 17, 2001
    Publication date: December 5, 2002
    Inventors: Shun-An Chen, Nai-Tien Ou, Ying-Wei Hsu
  • Publication number: 20020183950
    Abstract: A recipe comparison system having recipe management ability in both offline accessing and online operating modes. The recipe comparison system includes an equipment server, an analysis module, and a recipe management module. The equipment server receives an upload signal, and then sends a recipe to the analysis module based on the upload signal. Then, the analysis module parses the recipe into internal-format-data according to a parsing rule, and outputs the internal-format-data to the recipe management module. If the recipe comparison system is in offline accessing mode, the recipe management module checks whether the internal-format-data obeys a specification definition. If the recipe comparison system is in the online operating mode, the recipe management module compares the internal-format-data with a standard recipe stored in a storage module.
    Type: Application
    Filed: July 24, 2001
    Publication date: December 5, 2002
    Inventors: Ming-Rong Fu, Rex Lin, Nai-Tien Ou, Constance Chu, Jiun-Shian Shiau, Ying-Wei Hsu
  • Patent number: 6477432
    Abstract: A system for managing quality control in a manufacturing plant for processing lots of work in process (WIP) for at least one product, comprises a manufacturing process which includes a manufacturing executive system (MES) which provides inspection data to a statistical process control (SPC) database, and an SPC analyzer for analyzing the inspection data and providing a sampling rate rule output to a sampling rate database. A server supplies the sampling rate rule to the MES. The MES tests a condition as to whether a lot of WIP should be sampled. If the condition is met, then provide an inspect control signal for inspection to the plant for inspecting the lot. If the condition is not met, then branch away from the control signal to provide an alternative control signal to pass on to the next process step in the plant.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: November 5, 2002
    Assignee: Taiwan Semiconductor Manufacturing Company
    Inventors: Shun-An Chen, Tzu-Jeng Hsu, Ying-Wei Hsu, Constance Y. Chu
  • Patent number: 6426802
    Abstract: A method and apparatus for generating highlight color tints for DND printing from full color image information uses complementary halftone screens. Image information that is out of a printing gamut is mapped into the printing gamut and the complementary halftone screens are applied to generate tint information while preserving gradation.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: July 30, 2002
    Assignee: Xerox Corporation
    Inventor: Ying-wei Lin
  • Publication number: 20020093686
    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.
    Type: Application
    Filed: December 6, 2000
    Publication date: July 18, 2002
    Applicant: XEROX CORPORATION
    Inventors: Zhigang Fan, Ying-Wei Lin, Hong Li
  • Publication number: 20020076103
    Abstract: This invention relates to a method and apparatus for segmenting an image using a combination of image segmentation techniques. More particularly, the invention is directed to an improved image segmentation technique for use in an image processing system that performs at least two distinct image segmentation processes on an image and combines the results to obtain a combined multi-layer representation of the image that can be suitably processed. In a specific example, a block based segmentation technique is performed on an image to generate a MRC (mixed raster content) representation—having foreground, background and selector layers. A pixel based segmentation technique is also performed on the image to generate rendering hints. The MRC representation and the rendering hints are then combined to obtain a four (4) layer representation of the image. The four layer representation is subsequently processed as required by the image processing system, e.g. compressed and stored.
    Type: Application
    Filed: December 15, 2000
    Publication date: June 20, 2002
    Applicant: XEROX CORPORATION
    Inventors: Ying-Wei Lin, Martin E. Banton, William A. Fuss
  • Publication number: 20020031268
    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.
    Type: Application
    Filed: September 28, 2001
    Publication date: March 14, 2002
    Applicant: XEROX CORPORATION
    Inventors: Salil Prabhakar, Hui Cheng, Zhigang Fan, John C. Handley, Ying-Wei Lin
  • Patent number: 6356654
    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.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: March 12, 2002
    Assignee: Xerox Corporation
    Inventors: Robert P. Loce, Michael S. Cianciosi, Ying-Wei Lin
  • Patent number: 6347115
    Abstract: The method and system of this invention predictively encodes and decodes an image signal that has been treated with the Roberts Method. The method and system generates a noise signal that is substantially similar to the noise signal generated during the Roberts Method treatment, calculates a range of values for the original image signal based upon an image signal from a different pixel location, predicts the image signal based upon the range of values and the noise signal and calculates an error signal that is encoded. The decoding method and system operates in reverse of the encoding method and system.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: February 12, 2002
    Assignee: Xerox Corporation
    Inventors: Ying-Wei Lin, Zhigang Fan
  • Publication number: 20010038460
    Abstract: 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.
    Type: Application
    Filed: May 30, 2001
    Publication date: November 8, 2001
    Applicant: Xerox Corporation
    Inventors: Robert P. Loce, Michael Branciforte, Ying-Wei Lin
  • Patent number: 6297889
    Abstract: 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.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: October 2, 2001
    Assignee: Xerox Corporation
    Inventors: Robert P. Loce, Michael Branciforte, Ying-wei Lin
  • Patent number: D472479
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: April 1, 2003
    Assignee: Cherng Wei Precision Co., Ltd.
    Inventor: Ying-Wei Chien