Posttype

add_filter( 'term_link', 'my_term_to_type', 10, 3 );

function my_term_to_type( $link, $term, $taxonomy ) {

    if ( 'actor','director' == $taxonomy ) {
        $post_id = my_get_post_id_by_slug( $term->slug, 'person' );

        if ( !empty( $post_id ) )
            return get_permalink( $post_id );
    }

    return $link;
}

function my_get_post_id_by_slug( $slug, $post_type ) {
    global $wpdb;

    $slug = rawurlencode( urldecode( $slug ) );
    $slug = sanitize_title( basename( $slug ) );

    $post_id = $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_name = %s AND post_type = %s", $slug, $post_type ) );

    if ( is_array( $post_id ) )
        return $post_id[0];
    elseif ( !empty( $post_id ) );
        return $post_id;

    return false;
}