Patents by Inventor Yen-Hao Chiao

Yen-Hao Chiao 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 for correcting rolling shutter effect and image processing device using the same
    Patent number: 9020292
    Abstract: A method for correcting a rolling shutter effect is provided. The method includes: obtaining feature point pairs in images, wherein each of the feature point pairs corresponds to a motion vector; obtaining sampling points between two consecutive images in time; setting a moving velocity and an angular velocity of an image capturing unit at each of the sampling points as variables; obtaining estimating motion vectors according to the variables, a focal length of the image capturing unit, and row locations where the feature point pairs are located; executing an optimization algorithm according to a difference between the motion vectors and the estimating motion vectors, to calculate the moving velocity and the angular velocity corresponding to the variables; varying locations of pixels in an image according to the moving velocity and the angular velocity, to generate a first corrected image. Thereby, the rolling shutter effect in an image is removed.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 28, 2015
    Assignees: Novatek Microelectronics Corp., National Tsing Hua University
    Inventors: Yen-Hao Chiao, Shang-Hong Lai, Ming-Feng Chiang
  • METHOD FOR CORRECTING ROLLING SHUTTER EFFECT AND IMAGE PROCESSING DEVICE USING THE SAME
    Publication number: 20140153840
    Abstract: A method for correcting a rolling shutter effect is provided. The method includes: obtaining feature point pairs in images, wherein each of the feature point pairs corresponds to a motion vector; obtaining sampling points between two consecutive images in time; setting a moving velocity and an angular velocity of an image capturing unit at each of the sampling points as variables; obtaining estimating motion vectors according to the variables, a focal length of the image capturing unit, and row locations where the feature point pairs are located; executing an optimization algorithm according to a difference between the motion vectors and the estimating motion vectors, to calculate the moving velocity and the angular velocity corresponding to the variables; varying locations of pixels in an image according to the moving velocity and the angular velocity, to generate a first corrected image. Thereby, the rolling shutter effect in an image is removed.
    Type: Application
    Filed: August 2, 2013
    Publication date: June 5, 2014
    Applicants: National Tsing Hua University, Novatek Microelectronics Corp.
    Inventors: Yen-Hao Chiao, Shang-Hong Lai, Ming-Feng Chiang