Patents by Inventor Yu-Quan Tzeng

Yu-Quan Tzeng 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).

  • Blind wavelet-based watermarking method
    Patent number: 8300878
    Abstract: A blind wavelet-based watermarking method is provided to extract one or more embedded watermarks form one or more high subbands of a watermarked image generated by 1-level or 2 level wavelet transform. One or more least-mean-square (LMS) filters are trained to predict the data sets in the high subbands of an original image by converting a low subband of the watermarked image. Therefore, the one or more embedded watermarks could be extracted by comparing the predicted data sets in the high subbands with data sets in corresponding subbands of the watermarked image.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: October 30, 2012
    Assignee: National Taiwan University of Science and Technology
    Inventors: Jing-Ming Guo, Yu-Quan Tzeng
  • BLIND WAVELET-BASED WATERMARKING METHOD
    Publication number: 20100061585
    Abstract: A blind wavelet-based watermarking method is provided to extract one or more embedded watermarks form one or more high subbands of a watermarked image generated by 1-level or 2 level wavelet transform. One or more least-mean-square (LMS) filters are trained to predict the data sets in the high subbands of an original image by converting a low subband of the watermarked image. Therefore, the one or more embedded watermarks could be extracted by comparing the predicted data sets in the high subbands with data sets in corresponding subbands of the watermarked image.
    Type: Application
    Filed: September 9, 2008
    Publication date: March 11, 2010
    Applicant: National Taiwan University of Science and Technology
    Inventors: Jing-Ming Guo, Yu-Quan Tzeng