I have no trouble reading pngs. tifs with values less than 1 are another story. tiger_am.zip (431 Bytes)
# gmic
gmic tiger_am.tif e[] {I(0)}
# first pixel: 0.32904687523841858,0.30593395233154297,0.2462676614522934
# Octave
imread('tiger_am.tif')
# first pixel: 37704,29258,7454
What is the best way to approach this?