US 12,334,867 B2
Method, system, and image processing device for capturing and/or processing electroluminescence images, and an aerial vehicle
Karl Georg Bedrich, Singapore (SG); Yong Sheng Khoo, Singapore (SG); and Yan Wang, Singapore (SG)
Assigned to Quantified Energy Labs Pte. Ltd., Singapore (SG)
Appl. No. 17/783,028
Filed by Quantified Energy Labs Pte. Ltd., Singapore (SG)
PCT Filed Dec. 30, 2020, PCT No. PCT/SG2020/050790
§ 371(c)(1), (2) Date Jun. 7, 2022,
PCT Pub. No. WO2021/137764, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 10201914038S (SG), filed on Dec. 31, 2019.
Prior Publication US 2023/0005115 A1, Jan. 5, 2023
Int. Cl. G06T 5/50 (2006.01); B64D 47/08 (2006.01); G05D 1/00 (2006.01); G06T 7/00 (2017.01); G06T 7/33 (2017.01); G06T 7/73 (2017.01); G06V 10/82 (2022.01); G06V 20/10 (2022.01); G06V 20/17 (2022.01); H02S 50/00 (2014.01); H04N 5/232 (2006.01); H04N 23/61 (2023.01); H04N 23/67 (2023.01); H04N 23/695 (2023.01); B64U 101/30 (2023.01)
CPC H02S 50/00 (2013.01) [B64D 47/08 (2013.01); G05D 1/0094 (2013.01); G06T 5/50 (2013.01); G06T 7/0002 (2013.01); G06T 7/337 (2017.01); G06T 7/74 (2017.01); G06V 10/82 (2022.01); G06V 20/10 (2022.01); G06V 20/17 (2022.01); G06V 20/176 (2022.01); H04N 23/61 (2023.01); H04N 23/67 (2023.01); H04N 23/695 (2023.01); B64U 2101/30 (2023.01); G06T 2207/10032 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/20164 (2013.01); G06T 2207/20216 (2013.01); G06T 2207/30168 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of processing electroluminescence (EL) images of a photovoltaic (PV) array, comprising:
extracting a plurality of frames of a PV array subsection of the PV array from the EL images, the PV array subsection including one or more PV modules of the PV array;
determining a reference frame having a highest image quality of the PV array subsection from among the extracted frames of the PV array subsection;
performing image alignment of the extracted frames to the reference frame to generate image aligned frames of the PV array subsection by:
stacking the extracted frames of the PV array subsection in an image stack arrangement, wherein respective corner points of the PV modules of the PV array subsection are stacked; and
aligning the respective corner points of each PV module in the extracted frames stacked in the image stack arrangement to corresponding corner points of a corresponding PV module in the reference frame; and
processing the image aligned frames of the PV array subsection to produce an enhanced image of the PV array subsection having a higher resolution than the reference frame.