At Extracting one band from a multiband BSQ file? · Discussion #5186 · ImageMagick/ImageMagick · GitHub , I have shown how ImageMagick can read the input file and make, for example, a 3-channel TIFF file:
magick -size 1024x1024+45056 -define quantum:format=floating-point -depth 32 -endian MSB gray:2n289977682xylb0eop1965l0m1.img -combine -evaluate Divide %[fx:QuantumRange] xyl.tiff
xyl.tiff contains values between -5.05e-05 and 0.000808, on a nominal scale of 0 to 1.
I suspect G’MIC could be used to make an interactive display of point cloud data, but (a) I don’t know G’MIC sufficiently well and (b) I don’t know if the data needs further transformation.
(EDIT: changed filename from eff.tiff ro xyl.tiff.)
(EDIT2: changed “-5.05e05” to “-5.05e-05”.)