Hello,

I need to use a lookup table to filter some BufferedImages.  I looked at
a Sun example, which
puts negative values into a byte array by assigning values greater than
127.

                byte chlut[] = new byte[256];
                for ( int j=0;j<200 ;j++ )
                    chlut[j]=(byte)(256-j);
                ByteLookupTable blut=new ByteLookupTable(0,chlut);

Can someone explain how this works, because I did the same thing, except
with short data,
and it doesn't appear quite right.  Does Sun's ImagingLib class handle
these negative values?

Thanks.

jason

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