How to add File\MimeType Validator in Zend Framework 2 Model Declaration

Actually I'm developing a simple file uploader.

In the ImageUploader.php file I define the getInputFilter function, all works unless I try to add a File\MimeType validator:

<?php

namespace Admin\Model;

use Zend\InputFilter\Factory as InputFactory;
use Zend\InputFilter\InputFilter;
use Zend\InputFilter\InputFilterAwareInterface;
use Zend\InputFilter\InputFilterInterface;

use Zend\Validator\File\MimeType; //tried also with use Zend\Validator\File;

[...]
public function getInputFilter()
{
    [...]
    $inputFilter->add($factory->createInput(array(
       'name'     => 'image',
       'required' => true,
       'validators' => array(
            array(
                'name'    => 'MimeType', //tried also with File\MimeType
                'options' => array(
                   'mimeType' => array('image/jpeg'),
                ),
            ),
        ),
    )));
    [...]
}

What's the correct way to define a File\Validator\MimeType?

Thank you in advance.

Here is a sample from my project with a couple of other useful features (renaming for example):

use Zend\File\Transfer\Adapter\Http,
    Zend\Validator\File\Size,
    Zend\Validator\File\IsImage;

[...]
public function editAction() {    
[...]
  if ($request->isPost()) {
    $params = $this->params()->fromPost();
    $files = $this->params()->fromFiles();

    $images = array();
    if(!empty($files['main_image']['name'])) $images['main_image'] = $files['main_image']['name'];
    if(!empty($files['detailed_image']['name'])) $images['detailed_image'] = $files['detailed_image']['name'];

    if(!empty($images)) {
      $adapter = new Http();
      $size = new Size(array('max'=>1000000));
      $is_image = new IsImage();
      $image_errors = array();
      foreach ($images as $field => $filename) {
        $adapter->setValidators(array($size,$is_image), $filename);
        if (!$adapter->isValid($filename)) {
          $adapter_errors = $adapter->getMessages();
          $errors = array();
          foreach($adapter_errors as $key=>$row) {
            $errors[] = $row;
          }
          if(!empty($errors)) {
            array_push($image_errors, $errors);
            $form->setMessages(array($field => $errors));
          }
        } else {
          $adapter->setDestination(IMAGES_PATH);
          $fileinfo = $adapter->getFileInfo();
          preg_match('/.+\/(.+)/', $fileinfo[$field]['type'], $matches);
          $extension = $matches[1];
          $old_filename = $item->__get($field);
          $new_filename = $item->id.'_'.$field.'.'.$extension;

          $adapter->addFilter('File\Rename',
            array(
              'target' => IMAGES_PATH.$new_filename,
              'overwrite' => true,
            )
          );

          if($adapter->receive($fileinfo[$field]['name'])) {
            if(!empty($old_filename) && $old_filename != $new_filename &&
              file_exists(IMAGES_PATH.$old_filename)) {
              unlink(IMAGES_PATH.$old_filename);
            }
            $params[$field] = $new_filename;
          }
        } 
      }
    }
  }
[...]
}
[...]

The code however could be refactored to move the logic to some lib or model.