How to display image file using TCPDF

How to display image file using TCPDF

I started use TCPDF. I scuess to display letters and output PDF. but I couldn't add JPG file. Could some one teach me what is wrong my code please?

jpg file is stored at laravel's [public] folder.
Controller

$pdf = new TCPDF("P", "mm", "A4", true, "UTF-8" );
$pdf->setPrintHeader(false);
$pdf->setPrintFooter(false);


$x = $pdf->getX();
$y = $pdf->getY();
$pdf->Image('photo.jpg', $x, $y, 100.0);

$pdf->setFont('kozminproregular','',10);        
$pdf->addPage();      
$pdf->writeHTML(view("pdf2", $data)->render());        
$pdf->output('test' . '.pdf', 'D');
return;

blade file

<?
$x = $pdf->getX();
$y = $pdf->getY();
$pdf->Image(photo.png', $x, $y, 100.0);
?>

via Chebli Mohamed