Patents by Inventor Yibin Yang

Yibin Yang 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).

  • System for and method of sharpness enhancement using coding information and local spatial features
    Publication number: 20030123747
    Abstract: In accordance with the present invention a method of and a system for enhancing image quality of a coded digital video signal representative of at least one frame in a digital video system are provided. The method comprises the steps of creating a usefulness metric identifying a limit to sharpness enhancement to be applied to the coded digital video signal, defining local spatial features in the frame, and identifying a frame type for the frame.
    Type: Application
    Filed: December 27, 2001
    Publication date: July 3, 2003
    Applicant: Koninklijke Philips Electronics N.V.
    Inventors: Yibin Yang, Lilla Boroczky
  • Method of and system for improving temporal consistency in sharpness enhancement for a video signal
    Publication number: 20030123549
    Abstract: In accordance with the preferred embodiment of the present invention, a method of and system for improving temporal consistency of an enhanced signal representative of at least one frame using a sharpness enhancement algorithm with an enhancement gain are provided. The method comprises the steps of: receiving the enhanced signal comprising at least one frame, obtaining an enhancement gain for each pixel in the frame, retrieving an enhancement gain value of each pixel in a reference frame from a gain memory using motion vectors, identifying if the frame is an I, P or B frame type and determining an updated enhancement gain for an I frame type by calculating a gain map for use in the sharpness enhancement algorithm. The updated enhancement gain of each pixel is equal to enhancement gain previously determined for use in the sharpness enhancement algorithm.
    Type: Application
    Filed: December 27, 2001
    Publication date: July 3, 2003
    Applicant: Koninklijke Philipse Electronics N.V.
    Inventors: Yibin Yang, Lilla Boroczky, Johan Janssen
  • MPEG-2 decoder with an embedded contrast enhancement function and methods therefor
    Publication number: 20020141496
    Abstract: A MPEG-2 decoder receives an MPEG-2 video stream containing discrete cosine transform (DCT) blocks and generates linear contrast enhanced DCT blocks applied to an inverse DCT processor contained therein. Preferably, the MPEG-2 decoder includes a linear contrast enhancement processor receiving the DCT blocks and generating the linear contrast enhanced DCT blocks, and the inverse DCT processor coupled to the linear contrast enhancement processor. Additionally, the MPEG-2 decoder can include a microprocessor which controls the linear contrast enhancement processor and the inverse DCT processor. A method and a memory containing computer readable instructions permitting the microprocessor to control the MPEG-2 decoder are also described.
    Type: Application
    Filed: March 30, 2001
    Publication date: October 3, 2002
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventor: Yibin Yang