HDR imaging test
Second image in each set is auto-white-balance. Not sure why HDR is skewing colors so much
Sample commands
./utils/hdr_merge.py --exposures 32768,131072,524288 --debevec-dir hdr_out/debevec --robertson-dir hdr_out/robertson --mertens-dir hdr_out/mertens data/scan/2023-03-20_05-11-39_tray-b3_hdr/ ./autowhite unknown_topusasell-tray1-b3_mz_5x_hdr-mertens.jpg unknown_topusasell-tray1-b3_mz_5x_hdr-mertens_wb.jpg
mz_5x_hdr-debevec_wb-autowhite
mz_5x_hdr-robertson_awb-gimp-he
mz_5x_hdr-enfuse-gaussian_wb-gimp-he