SYSTEM AND METHOD FOR CALIBRATING IMAGING MEASUREMENTS TAKEN FROM AERIAL VEHICLES.

摘要

Systems and methods are provided for calibrating spectral measurements taken of one or more targets from an aerial vehicle. Multiple photo sensors may be configured to obtain spectral measurements of one or more ambient light sources. The obtained spectral measurements of the one or more ambient light sources may be used to calibrate the obtained spectral measurements of the target.

主权项

1. A system for obtaining calibrated spectrally-resolved images of a target, the system comprising:
an aerial vehicle; at least one spectral imaging device disposed at the aerial vehicle, the at least one spectral imaging device being configured to obtain spectrally-resolved images of a target, the target being at least partially illuminated by one or more ambient light sources, the spectrally-resolved images of the target including a first set of spectrally-resolved images of the target; and two or more photo sensors configured to obtain spectral measurements of the one or more ambient light sources, the two or more photo sensors having peak responses within a first set of discrete spectral frequency ranges and are configured to obtain a first set of ambient light spectral measurements of the one or more ambient light sources at individual ones of the first set of discrete spectral frequency ranges, the two or more photo sensors comprising a first photo sensor and a second photo sensor, the first photo sensor having a peak response corresponding to a first spectral frequency range of the first set of discrete spectral frequency ranges, the second photo sensor having a peak response corresponding to a second spectral frequency range, the first spectral frequency range being different from the second spectral frequency range, the first photo sensor being configured to obtain a first spectral measurement of the one or more ambient light sources over the first spectral frequency range, the second photo sensor being configured to obtain a second spectral measurement of the one or more ambient light sources over the second spectral frequency range; wherein the obtained spectral measurements of the one or more ambient light sources are received and used by one or more hardware processors to calibrate the spectrally-resolved images of the target, such that the first set of spectrally-resolved images of the target are calibrated based on the first spectral measurement obtained by the first photo sensor and the second spectral measurement obtained by the second photo sensor.