These are the steps you may follow.
1. Add custom image uploader in theme customizer screen based on the number of different header images you want. This needs php coding. This tutorial may help > http://kwight.ca/2012/12/02/adding-a-logo-uploader-to-your-wordpress-site-with-the-theme-customizer/
2. Link those image uploaders in header.php to show the images based on current page id/name or any attribute.
Remember to use child theme for any type of theme customization like the above.
Hej souravb
Tack så mycket för tippsing! Thank you very mutch, i will try this.
Skål!