catch_that_image size and cropping

Hi there, I’m trying to find a way to have a set size and potentially hard crop images using the catch_that_image function.

At the moment, I’m using featured images primarily, but have older posts which don’t have any. Because I have a section that show a random group of posts with images I decided to use catch_that_image in an if/else statement to make sure something showed up.

Now for featured images I have the following code

if ( function_exists( 'add_theme_support' ) ) {
	add_theme_support( 'post-thumbnails' );
        set_post_thumbnail_size( 150, 150 ); }
if ( function_exists( 'add_image_size' ) ) {
	add_image_size( 'article', 600, 250, true );
	add_image_size( 'recent', 150, 70, true );
	add_image_size('homepage', 200, 200, true);
	add_image_size('slider', 400, 190, true);

So I really am hoping there is a way to use add_image_size or something similar to catch_that_image in order to do the 150×70 true option. I can set the size with html, but then it distorts the image pretty bad depending on original size.

Also here is my catch_that_image code and the code I’m using to call that or the featured image.

Catch_that_image code.

<?php
	function catch_that_image() {
  global $post, $posts;
  $first_img = '';
  ob_start();
  ob_end_clean();
  $output = preg_match_all('/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $matches);
  $first_img = $matches [1] [0];
  if(empty($first_img)){ //Defines a default image
    $first_img = "/images/logo.png";
  }
  return $first_img;
}
?>

Code calling the images.

<?php
if ( has_post_thumbnail() ) { ?>
    <p class="image"><a title="<?php the_title(); ?>" href="<?php the_permalink(); ?>"><?php  the_post_thumbnail( 'recent' );  ?></a></p>
<?php } else{ ?>
	<p class="image"><a title="<?php the_title(); ?>" href="<?php the_permalink(); ?>"> <img src="<?php echo catch_that_image() ?>" alt="<?php the_title(); ?>" /></a></p>
<?php } ?>

I’ve tried just using the options from the add_image_size functions, but those don’t work, and I’ve tried different variations in the catch_that_image function as well.

I appreciate any help or insight anyone has.