Patents by Inventor Takafumi Yamazoe

Takafumi Yamazoe 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).

  • Character recognition device, character recognition method, character recognition system, and character recognition program
    Patent number: 8965126
    Abstract: A character recognition device includes image input unit that receives an image, character region detection unit that detects a character region in the image, character region separation unit that separates the character region on a character-by-character basis, character recognition unit that performs character-by-character recognition on the characters present in separated regions and outputs one or more character recognition result candidates for each character, first character string transition data creation unit that receives the candidates, calculates weights for transitions to the candidates and creates first character string transition data based on a set of the candidates and the weights, and WFST processing unit that sequentially performs state transitions based on the first character string transition data, accumulates weights in each state transition and calculates a cumulative weight for each state transition, and outputs one or more state transition results based on the cumulative weight.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: February 24, 2015
    Assignee: NTT DOCOMO, INC.
    Inventors: Takafumi Yamazoe, Minoru Etoh, Takeshi Yoshimura, Kosuke Tsujino
  • CHARACTER RECOGNITION DEVICE, CHARACTER RECOGNITION METHOD, CHARACTER RECOGNITION SYSTEM, AND CHARACTER RECOGNITION PROGRAM
    Publication number: 20130108160
    Abstract: A character recognition device includes image input unit that receives an image, character region detection unit that detects a character region in the image, character region separation unit that separates the character region on a character-by-character basis, character recognition unit that performs character-by-character recognition on the characters present in separated regions and outputs one or more character recognition result candidates for each character, first character string transition data creation unit that receives the candidates, calculates weights for transitions to the candidates and creates first character string transition data based on a set of the candidates and the weights, and WFST processing unit that sequentially performs state transitions based on the first character string transition data, accumulates weights in each state transition and calculates a cumulative weight for each state transition, and outputs one or more state transition results based on the cumulative weight.
    Type: Application
    Filed: February 24, 2012
    Publication date: May 2, 2013
    Applicant: NTT DOCOMO, INC.
    Inventors: Takafumi Yamazoe, Minoru Etoh, Takeshi Yoshimura, Kosuke Tsujino