Patents by Inventor Mohammad T. Rahman

Mohammad T. Rahman 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).

  • Publication number: 20200110185
    Abstract: A system for surveying a subsurface formation includes one or more electromagnetic sensors located at or above the surface of the Earth. The sensors are configured to detect passive-source source signals and return signals that are based on seismoelectric or electroseismic conversion of the source signal in the subsurface formation. The system includes a processor communicatively coupled to the one more electromagnetic sensors. The at least one processor is configured to align and stack the passive-source source signals and the return signals and determine a property of the subsurface formation based, at least in part, on the aligned and stacked passive-source source signals and the return signals.
    Type: Application
    Filed: October 7, 2019
    Publication date: April 9, 2020
    Inventors: Liyu Xu, Arthur Howard Thompson, Thomas Clayton Ault, Robert W. England, Alan Jerry Katz, Mohammad T. Rahman, Patrick Lawler Reese
  • Patent number: 8743235
    Abstract: An apparatus and method for automatically adjusting an exposure for a digital imaging device by (a) receiving a current image frame using an exposure value (EV), (b) computing a current image spatial entropy (ISE) for the current image frame, and (c) whenever the current ISE is greater than a previous ISE, setting the previous ISE equal to the current ISE, increasing the EV, and repeating steps (a) and (b), and (d) whenever the current ISE is less than or equal to the previous ISE, decreasing the EV, receiving the current image frame using the EV, and displaying the current image frame.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: June 3, 2014
    Assignee: Board of Regents, The University of Texas System
    Inventors: Nasser Kehtarnavaz, Mohammad T. Rahman
  • Publication number: 20120212642
    Abstract: An apparatus and method for automatically adjusting an exposure for a digital imaging device by (a) receiving a current image frame using an exposure value (EV), (b) computing a current image spatial entropy (ISE) for the current image frame, and (c) whenever the current ISE is greater than a previous ISE, setting the previous ISE equal to the current ISE, increasing the EV, and repeating steps (a) and (b), and (d) whenever the current ISE is less than or equal to the previous ISE, decreasing the EV, receiving the current image frame using the EV, and displaying the current image frame.
    Type: Application
    Filed: November 4, 2010
    Publication date: August 23, 2012
    Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Nasser Kehtarnavaz, Mohammad T. Rahman