Hi,
Thank you for getting back to us.
After reviewing your mail, I understand that you're looking to automate the process of mapping image assets to campaigns at scale. Please note that the Google Ads API allows for programmatic management of Google Ads campaigns, ad groups, ads, and other resources. By using the API, you can create scripts or programs to handle repetitive tasks efficiently. I would recommend referring to the Help Center article
link for more information about image assets.