Patents by Inventor Ammal Malik

Ammal Malik 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).

  • System and method for boundary artifact elimination in parallel processing of large format images
    Patent number: 7742658
    Abstract: The disclosed systems and methods pertain to the processing of large format images in a manner to avoid introducing imaging defects, and more particularly to dividing the large image into bands, processing these bands in parallel and then putting them back together in to create the final processed image. The methods include the use of overlapping the image bands, padding of the bands prior to processing and the redefinition of image values at common boundaries of the bands to minimize or eliminate visible defects.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: June 22, 2010
    Assignee: Xerox Corporation
    Inventors: Clara Cuciurean-Zapan, Ramesh Nagarajan, Ammal Malik, Xing Li
  • Dynamic range detection and adjustment
    Patent number: 7555172
    Abstract: An original image is received. The original image is divided into tiles. A whitepoint value of each tile is determined. A blackpoint value of each tile is determined. A whitepoint value of each pixel in the image is determined by interpolating the determined whitepoint values of neighboring tiles. A blackpoint of each pixel in the image is determined by interpolating the determined blackpoint values of neighboring tiles.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: June 30, 2009
    Assignee: Xerox Corporation
    Inventors: Ammal Malik, Xing Li, Ramesh Nagarajan
  • System and method for boundary artifact elimination in parallel processing of large format images
    Publication number: 20070172149
    Abstract: The disclosed systems and methods pertain to the processing of large format images in a manner to avoid introducing imaging defects, and more particularly to dividing the large image into bands, processing these bands in parallel and then putting them back together in to create the final processed image. The methods include the use of overlapping the image bands, padding of the bands prior to processing and the redefinition of image values at common boundaries of the bands to minimize or eliminate visible defects.
    Type: Application
    Filed: January 26, 2006
    Publication date: July 26, 2007
    Applicant: Xerox Corporation
    Inventors: Clara Cuciurean-Zapan, Ramesh Nagarajan, Ammal Malik, Xing Li
  • Dynamic range detection and adjustment
    Publication number: 20070098262
    Abstract: An original image is received. The original image is divided into tiles. A whitepoint value of each tile is determined. A blackpoint value of each tile is determined. A whitepoint value of each pixel in the image is determined by interpolating the determined whitepoint values of neighboring tiles. A blackpoint of each pixel in the image is determined by interpolating the determined blackpoint values of neighboring tiles.
    Type: Application
    Filed: October 31, 2005
    Publication date: May 3, 2007
    Inventors: Ammal Malik, Xing Li, Ramesh Nagarajan
  • Compression of mixed raster content (MRC) image data
    Publication number: 20050036694
    Abstract: In a mixed raster content (MRC) image data format, where a separation plane is used to define portions of the image to compressed in a lossy or lossless manner, edge pixels are identified in the separation plane. Each edge pixel is modified to assume a maximum luminance and most neutral chrominance found among neighboring pixels. The modification of the edge pixel data minimizes artifacts such as fringe effects when the image data is compressed and subsequently decompressed.
    Type: Application
    Filed: August 12, 2003
    Publication date: February 17, 2005
    Inventors: Xing Li, Ramesh Nagarajan, Ammal Malik