Patents by Inventor Chiew Tong Lau

Chiew Tong Lau 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).

  • Lossless image and video compression
    Patent number: 9813704
    Abstract: A method is provided for encoding an intra predicted residual block of an image for use in image or video compression. The intra predicted residual block is associated with an intra prediction coding mode. The method includes generating a set of residual error blocks including residual data with different statistical characteristics from the residual data in the intra predicted residual block. Each of the residual error blocks is scanned and entropy coded to produce a first set of bit streams. The lengths of each of the first set of bit streams are recorded. The intra predicted residual block is also scanned and entropy coded to produce a second bit stream. The length of the second bit stream is recorded. Selecting the minimum length bit stream from the first set of bit streams and the second bit stream as the output coded bit stream of the intra predicted residual block.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: November 7, 2017
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Zhouye Gu, Weisi Lin, Bu Sung Lee, Chiew Tong Lau
  • LOSSLESS IMAGE AND VIDEO COMPRESSION
    Publication number: 20140301462
    Abstract: A method is provided for encoding an intra predicted residual block of an image for use in image or video compression. The intra predicted residual block is associated with an intra prediction coding mode. The method includes generating a set of residual error blocks including residual data with different statistical characteristics from the residual data in the intra predicted residual block. Each of the residual error blocks is scanned and entropy coded to produce a first set of bit streams. The lengths of each of the first set of bit streams are recorded. The intra predicted residual block is also scanned and entropy coded to produce a second bit stream. The length of the second bit stream is recorded. Selecting the minimum length bit stream from the first set of bit streams and the second bit stream as the output coded bit stream of the intra predicted residual block.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 9, 2014
    Inventors: Zhouye Gu, Weisi Lin, Bu Sung Lee, Chiew Tong Lau