Patents by Inventor Jiayang Song

Jiayang Song 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).

  • Automatic focusing method and apparatus based on region of interest
    Patent number: 11050922
    Abstract: An automatic focusing method and apparatus comprise the following steps: acquiring a target image that has been divided into blocks; acquiring the definition of each block, respectively; acquiring normalized central coordinates and a normalized size of a region of interest on the target image; respectively calculating a full width at half maximum coefficient in the horizontal direction and the vertical direction according to the normalized size; calculating a weight value of each block using a two-dimensional discrete Gaussian function according to the normalized central coordinates and the full width at half maximum coefficient; calculating a normalized overall definition of the target image according to the weight value and definition of each block; and focusing according to the normalized overall definition. The method and apparatus can automatically calculate a mask of the region of interest, thereby avoiding the occupying of storage space required when storing ROI mask data.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: June 29, 2021
    Assignees: Suzhou Keda Technology Co., Ltd., Suzhou Keyuan Software Technology Co., Ltd., Suzhou Keda Special Video Co., Ltd.
    Inventors: Jiayang Song, Fengfeng Tang, Yong Zhang, Lijun Cao, Weidong Chen
  • Automatic Focusing Method and Apparatus Based on Region of Interest
    Publication number: 20200021747
    Abstract: An automatic focusing method and apparatus comprise the following steps: acquiring a target image that has been divided into blocks; acquiring the definition of each block, respectively; acquiring normalized central coordinates and a normalized size of a region of interest on the target image; respectively calculating a full width at half maximum coefficient in the horizontal direction and the vertical direction according to the normalized size; calculating a weight value of each block using a two-dimensional discrete Gaussian function according to the normalized central coordinates and the full width at half maximum coefficient; calculating a normalized overall definition of the target image according to the weight value and definition of each block; and focusing according to the normalized overall definition. The method and apparatus can automatically calculate a mask of the region of interest, thereby avoiding the occupying of storage space required when storing ROI mask data.
    Type: Application
    Filed: August 21, 2019
    Publication date: January 16, 2020
    Inventors: Jiayang Song, Fengfeng Tang, Yong Zhang, Lijun Cao, Weidong Chen