Patents by Inventor Zhaohai Luo

Zhaohai Luo 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).

  • Method and means for dividing an image into character image lines, and method and apparatus for character image recognition
    Patent number: 7352897
    Abstract: A method for dividing a character image into lines, comprising the following steps: segment-dividing step for, in term of pixels, dividing a character image into a plurality of character image segments arranged sided by side, each segment having a predetermined width; pixel distribution statistic step for obtaining the pixel distribution statistic in each image segment, namely the number of black pixels in each pixel-row of the segment, and obtaining the pixel distribution statistic in the whole image, namely the number of black pixels in each pixel-row of the whole image; segment block forming step for dividing the image segment into segment blocks according to the pixel distribution statistic of the image segments and the pixel distribution statistic of the whole image obtained in the pixel distribution statistic step; line images forming step for integrating the divided segment blocks into line images.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: April 1, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Zhaohai Luo, Yi Li
  • Method and means for dividing an image into character image lines, and method and apparatus for character image recognition
    Publication number: 20030086610
    Abstract: A method for dividing a character image into lines, comprising the following steps: segment-dividing step for, in term of pixels, dividing a character image into a plurality of character image segments arranged sided by side, each segment having a predetermined width; pixel distribution statistic step for obtaining the pixel distribution statistic in each image segment, namely the number of black pixels in each pixel-row of the segment, and obtaining the pixel distribution statistic in the whole image, namely the number of black pixels in each pixel-row of the whole image; segment block forming step for dividing the image segment into segment blocks according to the pixel distribution statistic of the image segments and the pixel distribution statistic of the whole image obtained in the pixel distribution statistic step; line images forming step for integrating the divided segment blocks into line images.
    Type: Application
    Filed: September 5, 2002
    Publication date: May 8, 2003
    Inventors: Zhaohai Luo, Yi Li