With Oracle Database 19c being available on Exadata now, and most likely soon on-prem as well, there’s a significant change you should be aware of when using image processing features inside the database: Oracle Multimedia will be removed in Oracle Database 19c.
Oracle Multimedia will be removed in Oracle Database 19c
When you upgrade or migrate your database to Oracle 19c, then Oracle Multimedia APIs will be still exist but won’t function anymore.
Read here in the Oracle Database 19c Upgrade Guide:
Desupport of Oracle Multemedia
Oracle Multimedia is desupported in Oracle Database