Hello,
I have gray images and I want to transform intervals
of gray values to transparent with PerlMagick, lets say
[rgb: 0 0 0 0 ... rgb: 45 45 45 0]. I have tried it with
for ($j = 0; $j <= 45; $j++) {
$rgb_gray = 'rgb:' . ' ' . $j . ' ' . $j . ' ' . $j . ' ' . '0';
$image->Transparent(colors=>"$rgb_gray");
};
but it seems that only 0 0 0 0 will be transformed to
transparent (even if I choose an interval where
black is not included). How can this task be done?
Thank you!
Guenter
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