公开(公告)号：US20240428584A1

公开(公告)日：2024-12-26

申请号：US18748010

申请日：2024-06-19

Applicant: Purdue Research Foundation

Inventor： Jian Jin ,  Jinnuo Zhang

IPC: G06V20/10 ,  G06T5/50 ,  G06T11/20 ,  G06V10/62

Abstract: A method of calibrating hyperspectral images to account for diurnal changes is disclosed which includes receiving a plurality of hyperspectral images obtained over a plurality of days from a field, deriving a plurality of spectra from the received plurality of hyperspectral images, decomposing the derived plurality of spectra into a trend component representing a trend associated with the plurality of days, subtracting the trend component from the derived plurality of spectra to thereby generate diurnal spectra for one or more wavelengths, fitting one or more mathematical functions associating spectrum to time of day to the generated diurnal spectra for each of the one or more wavelengths, generating a mode from the fitted mathematical function for each of the one or more wavelengths, and applying the model to the derived spectra at a first time to generate a calibrated spectra at a second time.