Patents by Inventor Kuan-Kang LAI

Kuan-Kang LAI 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).

  • Noise estimation apparatus and method thereof
    Patent number: 9031322
    Abstract: A noise estimation apparatus for calculating a noise estimation value of a frame of an image is provided. The noise estimation apparatus includes a distribution calculation unit, a variance calculation unit, a distribution curve generation module and a noise estimation unit. The distribution calculation unit generates a pixel distribution according to multiple pixel data of an ith block of the frame and multiple previous pixel data of the ith block of a previous frame. The variance calculation unit combines the pixel data and the previous pixel data to generate a variance value. The curve distribution generation module generates a curve distribution according to the variance value, and compares the pixel distribution with the curve distribution to generate a weighting value. The noise estimation unit outputs the noise estimation value according to the weighting value and the variance value corresponding to each of the blocks of the frame.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: May 12, 2015
    Assignee: Novatek Microelectronics Corp.
    Inventor: Kuan-Kang Lai
  • NOISE ESTIMATION APPARATUS AND METHOD THEREOF
    Publication number: 20140193070
    Abstract: A noise estimation apparatus for calculating a noise estimation value of a frame of an image is provided. The noise estimation apparatus includes a distribution calculation unit, a variance calculation unit, a distribution curve generation module and a noise estimation unit. The distribution calculation unit generates a pixel distribution according to multiple pixel data of an ith block of the frame and multiple previous pixel data of the ith block of a previous frame. The variance calculation unit combines the pixel data and the previous pixel data to generate a variance value. The curve distribution generation module generates a curve distribution according to the variance value, and compares the pixel distribution with the curve distribution to generate a weighting value. The noise estimation unit outputs the noise estimation value according to the weighting value and the variance value corresponding to each of the blocks of the frame.
    Type: Application
    Filed: May 17, 2013
    Publication date: July 10, 2014
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventor: Kuan-Kang LAI