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Re: determining size of image

by zentara (Archbishop)
on Feb 22, 2007 at 17:22 UTC ( #601594=note: print w/replies, xml ) Need Help??


in reply to determining size of image

Just as an aside, the ImageMagick ping method is the most efficient way to get size.
#!/usr/bin/perl -w use Image::Magick; my $x = $ARGV[0]; my $image = Image::Magick->new; #$image->Read($x); #my ($w,$h)= $image->Get('columns','height'); #print $x,' is ',$w.'x'.$h,"\n"; #this is very inneficient memory wise, use Ping ($width, $height, $size, $format) = $image->Ping($x); print $width,"\n", $height,"\n" ,$size,"\n", $format,"\n";
and here is a script I had in my library to do an actual distortion free resize.
#!/usr/bin/perl # I need to adjust an image to a minimum size, but without distoring i +t, # so I basically want to add space evenly around the existing image. # Using Resize is out since that will distort the image, so I gave # "Composite" a shot, use Image::Magick; use strict; use warnings; my $im = Image::Magick->new(); my $bg = Image::Magick->new(size => "200x400"); my $rc = $bg->Read("xc:white"); $rc = $im->Read($ARGV[0]); die $rc if $rc; $rc = $im->Resize("200x400"); warn $rc if $rc; $rc = $bg->Composite(gravity => "Center", image => $im); warn $rc if $rc; $rc = $bg->Write("$ARGV[0]-resized.png"); die $rc if $rc;

I'm not really a human, but I play one on earth. Cogito ergo sum a bum

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