Patents by Inventor Archana Sapkota

Archana Sapkota 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).

  • Short term cloud coverage prediction using ground-based all sky imaging
    Patent number: 10444406
    Abstract: A method for predicting short-term cloud coverage includes a computer calculating an estimated cloud velocity field at a current time value based on sky images. The computer determines a segmented cloud model based on the sky images, a future sun location corresponding to a future time value, and sun pixel locations at the future time value based on the future sun location. Next, the computer applies a back-propagation algorithm to the sun pixel locations using the estimated cloud velocity field to yield propagated sun pixel locations corresponding to a previous time value. Then, the computer predicts cloud coverage for the future sun location based on the propagated sun pixel locations and the segmented cloud model.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: October 15, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Shanhui Sun, Jan Ernst, Archana Sapkota, Eberhard Ritzhaupt-Kleissl, Jeremy Ralph Wiles, Terrence Chen
  • Short term cloud coverage prediction using ground-based all sky imaging
    Publication number: 20150301226
    Abstract: A method for predicting short-term cloud coverage includes a computer calculating an estimated cloud velocity field at a current time value based on sky images. The computer determines a segmented cloud model based on the sky images, a future sun location corresponding to a future time value, and sun pixel locations at the future time value based on the future sun location. Next, the computer applies a back-propagation algorithm to the sun pixel locations using the estimated cloud velocity field to yield propagated sun pixel locations corresponding to a previous time value. Then, the computer predicts cloud coverage for the future sun location based on the propagated sun pixel locations and the segmented cloud model.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 22, 2015
    Applicant: Siemens Aktiengesellschaft
    Inventors: Shanhui Sun, Jan Ernst, Archana Sapkota, Eberhard Ritzhaupt-Kleissl, Jeremy Ralph Wiles, Terrence Chen