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Re: converting Jpeg to grayscale

by snadra (Scribe)
on Jul 22, 2003 at 13:33 UTC ( #276717=note: print w/ replies, xml ) Need Help??


in reply to converting Jpeg to grayscale

If you are willing to use other modules instead of GD you could also use Imager. It is easier to install than Image::Magick, and it is capable to do many image manipulation stuff as well.
It also has gif support, if you need that. It will ask if gif support should be enabled during the installation.
For setting the hue and saturation of the image do this:

my $color = Imager::Color->new(hue=>120, value=>1, saturation=>0.5);


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Re: Re: converting Jpeg to grayscale
by Anonymous Monk on Jul 22, 2003 at 14:30 UTC
    Maybe I'm just to dumb to understand the documentation, but this seems like it should work no?
    use Imager; my $pregray = Imager->new(); $pregray->copy($original); my $grey = $pregray->convert(preset=>'grey');
    Or am I passing in the original image wrong?

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