functions.php

// Code to Display Featured Image with Caption on top of the post 

add_action( 'genesis_before_entry', 'featured_post_image', 8 );
	function featured_post_image() {
  		if ( ! is_singular( 'post' ) )  {
  	return;
}

	  $image = genesis_get_image( 'format=url&size=post-image' ); // get the URL of featured image.

    $thumb_id = get_post_thumbnail_id( get_the_ID() );     // get the alt text of featured image.
    $alt = get_post_meta( $thumb_id, '_wp_attachment_image_alt', true );

    $caption = get_post( $thumb_id )->post_excerpt; // get the caption of featured image.
    $caption_html = $caption ? '<figcaption class="wp-caption-text">'. $caption . '</figcaption>' : ''; // Construct the caption HTML if caption is present for the featured image..
    
    printf( '<figure class="single-post-image wp-caption"><img src="%s" alt="%s" />%s</figure>', esc_url( $image ), $alt, $caption_html ); // display the featured image with caption (if present) beneath the image.
}