Process image before generating the tag

html.php

<?php defined('SYSPATH') or die('No direct script access.');

class HTML extends Kohana_HTML{
   /**
     * Process image before creating tag
     * 
     * @param  string $file                   master file
     * @param  string $processed_file file to display
     * @param  array  $attributes         with extra processing attributes
     * @param  type   $index 
     * @return string
     */
    public static function pimage($file, $processed_file, array $attributes, $index = FALSE)
    {
        if(Arr::get(Kohana::modules,'image'))
        {
            throw new Kohana_Exception('Activate the Image module');
        }

        $image = Image::factory($file, Arr::get($attributes, 'driver'));

        unset($attributes['driver']);

        $refection = new ReflectionClass('Image');
        $image_actions = array();

        foreach($refection->getMethods(ReflectionMethod::IS_PUBLIC) as $method)
        {
            if(isset($attributes[$method->name]))
            {
                $image_actions[] = array('method'=>$method,'arguments'=>$attributes[$method->name]);

                unset($attributes[$method->name]);
            }
        }

        if(!is_file(realpath($processed_file)))
        {
            foreach($image_actions as $action) {
                $action['method']->invokeArgs($image,$action['arguments']);
            }

            $image->save($processed_file, Arr::get($attributes, 'save_quality', 100));

            unset($attributes['save_quality']);
        }

        return HTML::image($processed_file, $attributes, $index);
    } 

}