Privilege to view payables invoice image

Summary:

Privilege to view payables invoice images in Oracle Webcenter

Content (please ensure you mask any confidential information):

We want to give certain users the possibility to view AP invoice images without giving full access through standard role Payables invoice Supervisor or for instance custom role Payables invoice inquiry. So idea is to create a BI report which pulls out the invoices (restricted to certain cost centers) and the URL of the invoice image. The problem is not in creating the report, but in finding the right privilege which gives the user access to the webcenter image.

Does anyone know if above is feasible and if so which privileges to user?