You're only reading the first "line" of your jpg file. Try 
# read data from a file
my $jpgData;
{
  local $/; # slurp mode.
  open(JPEG, "< $file") or die "Can't open $file : $!\n";
  binmode JPEG;
  $jpgData = <JPEG>;
  close(JPEG);
}

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"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Insight Into Image::TestJPG Module needed by Joost
in thread Insight Into Image::TestJPG Module needed by PerlBear

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