#add MP header information in the APP2 segment for the image
my $buffer;
my $segref = new Image::MetaData::JPEG::Segment('APP2', \$buffer, 'NOPARSE');

my $head = "MPF0";
my $recref = $segref->store_record('MP_HEADER', $LONG, \$head, 1);
$buffer = $recref->get_value();