Only one input image given. Copying input image to output image.

hugin_hdrmerge: merge overlapping images hugin_hdrmerge version 2017.0.0.eac5e8cc546e Usage: hugin_hdrmerge [options] -o output.exr <input-files> Valid options are: -o|--output prefix output file -m mode merge mode, can be one of: avg (default), avg_slow, khan, if avg, no -i and -s options apply -i iter number of iterations to execute (default is 4). Khan only -s sigma standard deviation of Gaussian weighting function (sigma > 0); default: 30. Khan only -a set advanced settings. Possible options are: f use gray images for computation. It's about two times faster but it usually returns worse results. g use gamma 2.2 correction instead of logarithm m do not scale image, NOTE: slows down process -c Only consider pixels that are defined in all images (avg mode only) -v|--verbose Verbose, print progress messages, repeat for even more verbose output -h|help Display help (this text)