Patents by Inventor MohammadHossein Asghari

MohammadHossein Asghari 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).

  • Phase Transform for Object and Shape Detection in Digital Images
    Publication number: 20190279369
    Abstract: Object and shape detection in digital images utilizing edge detection is described. In a first edge detection approach, phase transformation is utilized in the frequency domain, such as in response to Fourier transform, followed by use of a frequency-domain phase kernel and inverse-Fourier transform. Edge detection is also provided using a phase transform in the spatial domain utilizing a convolution approach. In a second edge detection approach, phase stretching is utilized, such as in combination with phase histogramming along with thresholding and morphological operations. Numerous example images are provided illustrating benefits of the disclosed technology with different applications and under different conditions.
    Type: Application
    Filed: March 19, 2019
    Publication date: September 12, 2019
    Applicant: The Regents of the University of California
    Inventors: Bahram Jalali, Mohammadhossein Asghari
  • Phase transform for object and shape detection in digital images
    Patent number: 10275891
    Abstract: Object and shape detection in digital images utilizing edge detection is described. In a first edge detection approach, phase transformation is utilized in the frequency domain, such as in response to Fourier transform, followed by use of a frequency-domain phase kernel and inverse-Fourier transform. Edge detection is also provided using a phase transform in the spatial domain utilizing a convolution approach. In a second edge detection approach, phase stretching is utilized, such as in combination with phase histogramming along with thresholding and morphological operations. Numerous example images are provided illustrating benefits of the disclosed technology with different applications and under different conditions.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: April 30, 2019
    Assignee: The Regents of the University of California
    Inventors: Bahram Jalali, Mohammadhossein Asghari
  • METHODS AND APPARATUS FOR MULTI-PROBE PHOTONIC TIME-STRETCH SPECTRAL MEASUREMENTS
    Publication number: 20180003560
    Abstract: Methods and apparatus for multi-probe photonic time-stretch spectral measurements are described. Methods allow for capturing real-time and single-shot non-overlapping spectral bands from multiple probes simultaneously, using Time-Stretch Dispersive Fourier Transform (TS-DFT) systems combined with Wavelength Division Multiplexing (WDM) device.
    Type: Application
    Filed: June 7, 2017
    Publication date: January 4, 2018
    Applicants: The Regents of the University of California, Time Photonics, Inc.
    Inventors: MohammadHossein Asghari, Bahram Jalali, Paul Trinh