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best way to store binary image data in a variable using image magick
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Subject Author Date
best way to store binary image data in a variable using image magick Jack 01-25-2008
Posted by Jack on January 25, 2008, 1:17 am
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 Hi all,

Just wanted to know the code for doin this, such that I can use the
variable for doing other kinds of methods against it..

I tried this, and I can printout the binary data, but I am finding you
can assign the image data to a variable for further processing.. any
ideas ? I noticed that this line: $img->Write('jpg:-'); actually
displayed the image data, but how do I assign that binary data to a
variable ??

use Image::Magick;
my $img = new Image::Magick;
$x= $img->Read("c:\tmp\ean81.bmp");

## doesnt work: $img->Write('$temp');

Posted by Jack on January 25, 2008, 1:19 am
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> Hi all,
>
> Just wanted to know the code for doin this, such that I can use the
> variable for doing other kinds of methods against it..
>
> I tried this, and I can printout the binary data, but I am finding you
> can assign the image data to a variable for further processing.. any
> ideas ? =A0I noticed that this line: =A0 =A0$img->Write('jpg:-'); =A0 actu=
ally
> displayed the image data, but how do I assign that binary data to a
> variable ??
>
> use Image::Magick;
> my $img =3D new Image::Magick;
> $x=3D $img->Read("c:\tmp\ean81.bmp");
>
> ## doesnt work: =A0 =A0$img->Write('$temp');

Hi forgot to say when I print $img or $x I get ---
Image::Magick=3DARRAY(0x2260a4)

Posted by John W. Krahn on January 25, 2008, 5:59 am
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Jack wrote:
>
> Just wanted to know the code for doin this, such that I can use the
> variable for doing other kinds of methods against it..
>
> I tried this, and I can printout the binary data, but I am finding you
> can assign the image data to a variable for further processing.. any
> ideas ? I noticed that this line: $img->Write('jpg:-'); actually
> displayed the image data, but how do I assign that binary data to a
> variable ??
>
> use Image::Magick;
> my $img = new Image::Magick;
> $x= $img->Read("c:\tmp\ean81.bmp");
>
> ## doesnt work: $img->Write('$temp');

Did you read their web page at:

http://www.imagemagick.org/script/perl-magick.php

Hint: ImageToBlob



John
--
Perl isn't a toolbox, but a small machine shop where you
can special-order certain sorts of tools at low cost and
in short order. -- Larry Wall

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