image module & access

I want to make image module coplately unreachable by anonymous users...

image module has this codes for permissions and i tried to add "view images" condition but i could not get it working right... How can i do this? thanks.

/**
 * Implementation of hook_perm
 */
function image_perm() {
  return array('administer images', 'create images');
}

/**
 * Implementation of hook_access
 */
function image_access($op, $node) {
  global $user;

  if ($op == 'create' && user_access('create images')) {
    return TRUE;
  }

  if ($op == 'update' && $user->uid == $node->uid) {
    return TRUE;
  }

  if ($op == 'delete' && $user->uid == $node->uid) {
    return TRUE;
  }
}