A method of processing electroluminescence images (1100, 1200, 1910, 2000a, 2000b, 2000c, 2310, 2320, 2330) of a PV array (10, 40, 2620), comprising extracting a plurality of frames (1500, 2100) of a PV array subsection (512a, 512b) of the PV array (10, 40, 2620) from the EL images (1100, 1200, 1910, 2000a, 2000b, 2000c, 2310, 2320, 2330), the PV array subsection (512a, 512b) including one or more PV modules (14, 1510, 2016, 2314, 2324, 2514, 514b) of the PV array (10, 40, 2620); determining a reference frame having a highest image quality of the PV array subsection (512a, 512b) from among the extracted frames (1500, 2100); performing image alignment of the extracted frames (1500, 2100) to the reference frame to generate image aligned frames by arranging the extracted frames (1500, 2100) in a stacked arrangement, wherein respective corner points (2010, 2014, 2612, 2622, 2632, 2642) of the PV modules (14, 1510, 2016, 2314, 2324, 2514, 514b) are stacked; and aligning the respective corner points (2010, 2014, 2612, 2622, 2632, 2642) of each PV module (14, 1510, 2016, 2314, 2324, 2514, 514b) in the extracted frames (1500, 2100) to the corresponding corner points (2010, 2014, 2612, 2622, 2632, 2642) of the PV module (14, 1510, 2016, 2314, 2324, 2514, 514b) in the reference frame; and processing the image aligned frames to produce an enhanced image (2200, 2310, 2320, 2330, 2610, 2630) of the PV array subsection (512a, 512b) having a higher resolution than the reference frame. extracting a plurality of frames (1500, 2100) of a PV array subsection (512a, 512b) of the PV array (10, 40, 2620) from the EL images (1100, 1200, 1910, 2000a, 2000b, 2000c, 2310, 2320, 2330), the PV array subsection (512a, 512b) including one or more PV modules (14, 1510, 2016, 2314, 2324, 2514, 514b) of the PV array (10, 40, 2620); determining a reference frame having a highest image quality of the PV array subsection (512a, 512b) from among the extracted frames (1500, 2100); performing image alignment of the extracted frames (1500, 2100) to the reference frame to generate image aligned frames by arranging the extracted frames (1500, 2100) in a stacked arrangement, wherein respective corner points (2010, 2014, 2612, 2622, 2632, 2642) of the PV modules (14, 1510, 2016, 2314, 2324, 2514, 514b) are stacked; and aligning the respective corner points (2010, 2014, 2612, 2622, 2632, 2642) of each PV module (14, 1510, 2016, 2314, 2324, 2514, 514b) in the extracted frames (1500, 2100) to the corresponding corner points (2010, 2014, 2612, 2622, 2632, 2642) of the PV module (14, 1510, 2016, 2314, 2324, 2514, 514b) in the reference frame; and arranging the extracted frames (1500, 2100) in a stacked arrangement, wherein respective corner points (2010, 2014, 2612, 2622, 2632, 2642) of the PV modules (14, 1510, 2016, 2314, 2324, 2514, 514b) are stacked; and aligning the respective corner points (2010, 2014, 2612, 2622, 2632, 2642) of each PV module (14, 1510, 2016, 2314, 2324, 2514, 514b) in the extracted frames (1500, 2100) to the corresponding corner points (2010, 2014, 2612, 2622, 2632, 2642) of the PV module (14, 1510, 2016, 2314, 2324, 2514, 514b) in the reference frame; and processing the image aligned frames to produce an enhanced image (2200, 2310, 2320, 2330, 2610, 2630) of the PV array subsection (512a, 512b) having a higher resolution than the reference frame.