How to use

$this->loadHelper('image');

Create Thumbnail

$this->Image->extentImage($width, $height, $dir, $file, $targetFile = null);

Crop Image

$this->Image->cropImage($dir, $file, $targetFile = null);

Trim Image

$this->Image->trimImage($dir, $file, $targetFile = null);

Create Image Text

$text="Thule Framework";
$this->Image->createImageText($text,$width,$height);