以下一行程序删除常规标题图像：

! is_admin() && is_front_page() && add_filter( \'theme_mod_header_image\', \'__return_false\' );

通常，标题图像是根据Theme Modification API, 提供相同的过滤方案"theme_mod_$name" 对于所有主题数据。

更新

我现在明白了，主题是在单个视图上使用帖子缩略图作为标题图像：

<?php
// Check if this is a post or page, if it has a thumbnail, and if it exceeds defined HEADER_IMAGE_WIDTH
if ( is_singular() && current_theme_supports( \'post-thumbnails\' ) && has_post_thumbnail( $post->ID ) 
&& ( /* $src, $width, $height */
$image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), \'post-thumbnail\' ))
&&
$image[1] >= HEADER_IMAGE_WIDTH ) :
// Houston, we have a new header image!
$image_attr = array(
            \'class\' => "scale-with-grid",
            \'alt\'   => trim(strip_tags( $attachment->post_excerpt )),
            \'title\' => trim(strip_tags( $attachment->post_title ))
            );
echo \'<div id="header_image" class="row sixteen columns">\'.get_the_post_thumbnail( $post->ID, array("HEADER_IMAGE_WIDTH","HEADER_IMAGE_HEIGHT"), $image_attr ).\'</div>\';
elseif ( get_header_image() ) : ?>
    <div id="header_image" class="row sixteen columns"><img class="scale-with-grid round" src="<?php header_image(); ?>" alt="" /></div>
<?php endif; ?> 

您必须删除子主题中的代码，并将其替换为：

if ( is_front_page() && get_header_image() )
{ 
?>
<div id="header_image" class="row sixteen columns">
    <img class="scale-with-grid round" src="<?php header_image(); ?>" alt="" />
</div>
<?php 
}