Unfortunately, Image::Epeg-new(\$jpg_data); isn’t working.
What makes you write that? I'm too lazy to whip up a database, but the following code pulls a JPEG image into a scalar and thumbnails it successfully. 
use 5.020;
use warnings;

use Image::Epeg qw(:constants);
use LWP::Simple;

# Copyright notice for the image:
# By Randal Schwartz from Portland, OR, USA - Flickr, CC BY-SA 2.0,
# https://commons.wikimedia.org/w/index.php?curid=2938351

my $image = get("https://upload.wikimedia.org/wikipedia/commons/b/b3/L
+arry_Wall_YAPC_2007.jpg");

die "Failed to load the image" unless defined $image;

my $epeg = Image::Epeg->new(\$image);
$epeg->resize(150,150,MAINTAIN_ASPECT_RATIO);
$epeg->write_file("thumbnail.jpg");

[download]
Side note: You need to have LWP::Protocol::https installed for this code.

In reply to Re: Extracting a blob from DBI to a buffer by haj
in thread Extracting a blob from DBI to a buffer by Serene Hacker

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