HOW TO CAPTURE IMAGE FROM WEBCAM AND THEN STORE IN DATABASE IN CODEIGNITER ?

CREATE TABLE `image_master` (
`ID` int(11) NOT NULL,
`image` varchar(255) NOT NULL,
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
ALTER TABLE `image_master` ADD PRIMARY KEY (`ID`);
ALTER TABLE `image_master` MODIFY `ID` int(11) NOT NULL AUTO_INCREMENT;

<div class="col-sm-3 col-md-offset-3 no-print">
<div class="clearfix" id="my_camera"></div><br/>
<button type="button" class="btn btn-info" onClick="take_snapshot()">
<i class="fa fa-camera fa-fw"></i>Capture
</button>
<div class="col-md-3 col-md-offset-1 imager" id="results">
<h3>Visitors Photo</h3>
</div>
</div>

<script type="text/javascript" src=”https://cdnjs.cloudflare.com/ajax/libs/webcamjs/1.0.25/webcam.min.js ”></script>

<script language="JavaScript">
Webcam.set({
width: 500,
height: 300,
dest_width: 200,
dest_height: 180,
image_format: 'jpeg',
jpeg_quality: 90
});
Webcam.attach('#my_camera');
</script>

<script language="JavaScript">
function take_snapshot() {
Webcam.snap(function (data_uri) {
document.getElementById('results').innerHTML = '<h2>Here is your image:</h2>' + '<img src="' + data_uri + '"/>';
Webcam.upload( data_uri, '<?php echo base_url('Image/controlerfunctiontoupload'); ?>', function(code, text) {
if (code == '200') { alert ('ok'); }
else { alert('error'); }
});
});
}
</script>

class Image extends CI_Controller {
public function __construct ( ) {
parent::__construct ( );
$this->load->model('Image_m');
}
public function index() {
$this->load->view('take_picture');
}
public function controlerfunctiontoupload() {
$filename=date('Ymdhis');
$filepath=FCPATH.'userfiles/'.$filename;
$result=move_uploaded_file($_FILES['webcam']['tmp_name'], $filepath);
$this->Image_m->saveImage($filename);
}
}

function saveImage($filename) {
$this->db->from('files');
$this->db->set('image', $filename);
$this->db->insert('image_master');
}