Display "Saturation" Effect
Posted by
David Webster on
Oct 09, 2009; 7:06pm
URL: http://imagej.273.s1.nabble.com/Display-Saturation-Effect-tp3690879.html
All,
I am having a funny problem(?) with some 8-bit imagery whereby bright
pixels get rolled over and displayed as near black or dark. This seems to
happen when I add a value to the pixels to shift their dynamic range. For
example, with the TTTREES2.gif image on the website included below, if I
add 100 to each pixel (using Process/Math/Add ...) in an image to bring
the dynamic range from say 0-133 to 100-233, large sections of higher
values show up as dark, not bright. This doesn't seem to happen with other
images. Can someone tell me what's up?
David Webster
http://www.siggraph.org/s95/S95_V1/COMUNITY/OSIRIS/OSIRIS.HTLYou can save this page as html and get the gifs in a folder.