Dear specialists and Wayne,
maybe it's a property of the PNG-file format that a 16bit image with
monochrome LUT is saved as 8bit with such a LUT.
Below please find a demo macro that saves and re-opens a 16bit image
with green LUT in TIF-format and PNG-format as well as without LUT in
PNG-format.
//
dir=getDir("temp");
newImage("Test","16-bit ramp",192,192,1);
save(dir+"test.png");
run("Green");
save(dir+"testLUT.tif");
save(dir+"testLUT.png");
close();
open(dir+"testLUT.tif");
open(dir+"testLUT.png");
open(dir+"test.png");
run("Tile");
exit();
//
Of course the TIF-image with LUT and the PNG-image without LUT open as
16bit images, not so the PNG-image with LUT that opens as 8bit image.
Is this a property of the PNG-file format?
Are there ways to get around the implicit 8bit-conversion?
Thanks for possible insights
Herbie
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