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<DIV><FONT face=Arial size=2>Anyone knows a way to convert from RGB values (3
numbers + A if needed) to the scalar/index (a value between 0 and 1) in the
default vtk lookup table? Thanks.</FONT></DIV>
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<DIV><FONT face=Arial size=2>For example, RGB (51,51,255), can I get a value
between 0 and 1 (index to the vtk lookup table) from that 3
numbers?</FONT></DIV>
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