code: protected function prepareImage()
  	{
  		if ($this->fileObj->isSvgImage)
  		{
  			$imagine = System::getContainer()->get('contao.image.imagine_svg');
  		}
  		else
  		{
  			$imagine = System::getContainer()->get('contao.image.imagine');
  		}
  
  		$image = new NewImage($this->strRootDir . '/' . $this->fileObj->path, $imagine, System::getContainer()->get('filesystem'));
  		$image->setImportantPart($this->prepareImportantPart());
  
  		return $image;
  	}
docs: Prepare image object.
  
  @return NewImage