Posted by
Herbie on
Apr 12, 2016; 5:57pm
URL: http://imagej.273.s1.nabble.com/8-bit-to-RGB-changes-data-tp5016110p5016113.html
Good day Ed,
not perfectly sure what you are doing.
"When I hover over the brightest part of
the image [...]"
Which image? The first of your stack?
"When you convert a monochrome to a three channel image [...]"
How do you convert a (single?) monochrome image to a stack?
Do you just triplicate the same image for this purpose?
Perhaps you could run the following example macro and tell us where the
problem occurs. Paste the following lines in an empty macro window
"Plugins > New > Macro"
and run the macro.
//=====================================================
newImage("Red", "8-bit ramp", 128, 128, 1);
run("Duplicate...", "title=Green");
run("Rotate 90 Degrees Right");
run("Duplicate...", "title=Blue");
run("Rotate 90 Degrees Right");
run("Images to Stack", "name=Stack title=[] use keep");
run("RGB Color");
//=====================================================
Best
Herbie
::::::::::::::::::::::::::::::::::::::::
Am 12.04.16 um 19:19 schrieb Ed Siefker:
> I have a stack of three monochrome 8-bit images that I need
> to convert to RGB so that they stay the right color when I
> save them as a tiff. When I hover over the brightest part of
> the image, I get values in the 60s. After selecting Image->
> Type->RGB Color, that area is saturated at 255.
>
> What's going on here? When you convert a monochrome to
> a three channel image, shouldn't you just preserve the data in
> the monochrome and add two channels full of zeros?
> -Ed
>
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