Patents by Inventor Xueru Sun

Xueru Sun 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).

  • Methods for optical image encryption and decryption based on biological information
    Patent number: 11451395
    Abstract: Image encryption and decryption methods based on biological information. The encryption method includes: obtaining the biological information; using the chaotic mapping method to preprocess the biological information to construct the first chaotic biological phase plate and the second chaotic biological phase plate; obtaining the original image to be encrypted and use the first chaotic biological phase plate and the second chaotic biological phase plate to determine the reconstructed optical encrypted image based on the discrete cosine transform method, and Fresnel transform method; and inputting reference light that interferes with the encrypted image of the reproduction light to determine the encrypted image. The invention can reduce the information amount of the key, improve the efficiency of storage and transmission, and improve security.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: September 20, 2022
    Inventors: Weimin Jin, Xueru Sun, Lihong Ma
  • Methods for Optical Image Encryption and Decryption Based on Biological Information
    Publication number: 20220052851
    Abstract: Image encryption and decryption methods based on biological information. The encryption method includes: obtaining the biological information; using the chaotic mapping method to preprocess the biological information to construct the first chaotic biological phase plate and the second chaotic biological phase plate; obtaining the original image to be encrypted and use the first chaotic biological phase plate and the second chaotic biological phase plate to determine the reconstructed optical encrypted image based on the discrete cosine transform method, and Fresnel transform method; and inputting reference light that interferes with the encrypted image of the reproduction light to determine the encrypted image. The invention can reduce the information amount of the key, improve the efficiency of storage and transmission, and improve security.
    Type: Application
    Filed: March 29, 2021
    Publication date: February 17, 2022
    Applicant: Zhejiang Normal University
    Inventors: Weimin Jin, Xueru Sun, Lihong Ma