Twentyeleven theme – specific header for each page

Trying out WordPress for the first time and using Twentyeleven theme.

I’d like to have a specific header image on each page. I’ve uploaded header images (filename is page-name specific) to uploads folder in Appearance > Header, but can only choose between one image throughout entire site, or random.

I’ve created a child theme. I’d like to maintain the scalable image function (is that standard with 3.2?)

Is there any way to do this without creating 10 different page templates? I’d love to paste a snippet of code in my child’s header.php file…

Here’s the site I’m fiddling with:

https://www.riskveda.com/wordpress/

Help is greatly appreciated.
Cheers