Patents by Inventor Seungsik Kwak

Seungsik Kwak 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 apparatus for correcting decoding errors in machine-readable symbols
    Patent number: 8267322
    Abstract: The present invention is a system and method for decoding an image of a bar code. Decoding the barcode includes tokenizing a plurality of pixels in the image of the barcode based upon a plurality of thresholds to form a first set of tokens. Decoding the barcode also includes re-tokenizing the plurality of pixels in the image of the barcode based upon the intensity of the pixels in the plurality of tokens, and the relativity intensity of neighboring tokens, to form a second set of tokens.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: September 18, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Jia Li, Mikhail Brusnitsyn, Eunice Poon, Seungsik Kwak, Guoyi Fu
  • Method and apparatus for creating pixel tokens from machine-readable symbols to improve decoding accuracy in low resolution images
    Patent number: 8162223
    Abstract: The present invention is directed towards systems and methods for decoding a bar code. Decoding the bar code includes segmenting the bar code into black tokens, white tokens and gray boundary pixels. Decoding the bar code also includes calculating a boundary position of each token with sub-pixel positional accuracy using intensity values of pixels in a boundary region.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: April 24, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Eunice Poon, Jia Li, Seungsik Kwak, Mikhail Brusnitsyn
  • Method and Apparatus for Correcting Decoding Errors in Machine-Readable Symbols
    Publication number: 20110215151
    Abstract: The present invention is a system and method for decoding an image of a bar code. Decoding the barcode includes tokenizing a plurality of pixels in the image of the barcode based upon a plurality of thresholds to form a first set of tokens. Decoding the barcode also includes re-tokenizing the plurality of pixels in the image of the barcode based upon the intensity of the pixels in the plurality of tokens, and the relativity intensity of neighboring tokens, to form a second set of tokens.
    Type: Application
    Filed: March 8, 2010
    Publication date: September 8, 2011
    Inventors: Jia Li, Mikhail Brusnitsyn, Eunice Poon, Seungsik Kwak
  • Method and Apparatus for Creating Pixel Tokens from Machine-Readable Symbols to Improve Decoding Accuracy in Low Resolution Images
    Publication number: 20110215152
    Abstract: The present invention is directed towards systems and methods for decoding a bar code. Decoding the bar code includes segmenting the bar code into black tokens, white tokens and gray boundary pixels. Decoding the bar code also includes calculating a boundary position of each token with sub-pixel positional accuracy using intensity values of pixels in a boundary region.
    Type: Application
    Filed: March 8, 2010
    Publication date: September 8, 2011
    Inventors: Eunice Poon, Jia Li, Seungsik Kwak, Mikhail Brusnitsyn