/**
 * Get featured image markup.
 *
 * Only when the single Post or Page has a featured image, and only when
 * showing the first page when the Page or Post is divided into multiple
 * pages using next page quicktag.
 *
 * @author Sridhar Katakam
 * @author Gary Jones
 * @link   http://sridharkatakam.com/display-featured-image-header-minimum-pro/
 *
 * @return  string|bool Image markup if image could be determined
 */
function sk_get_featured_image() {
    // Uncomment the lines below if you want to limit to *just* featured
    // images, and not fallback to first-attached images.
    // if ( ! has_post_thumbnail() ) {
    //  return;
    // }

    if ( ! is_page() && ! is_single() ) {
        return;
    }

    if ( (int) get_query_var( 'page' ) > 0 ) {
        return;
    }

    // If post has no featured image, it will attempt to fallback to
    // first-attached image if the first conditional in this function
    // is commented out.
    return genesis_get_image( 'class=aligncenter' );
}

add_action ( 'genesis_entry_header', 'sk_featured_image', 5 );
/**
 * Display Featured image after header.
 *
 * Only on the first page when the Page or Post is divided into multiple
 * using next page quicktag.
 *
 * Scope: static Pages and single Posts.
 *
 * @author Sridhar Katakam
 * @author Gary Jones
 * @link   http://sridharkatakam.com/link-to-your-tutorial
 */
function sk_featured_image() {
    if ( $image = sk_get_featured_image() ) {
        echo '<div class="my-featured-image">' . $image . '<p class="wp-caption-text">' . get_post(get_post_thumbnail_id())->post_excerpt . '</p></div>';
    }
}