5 OrdImageSignature

This chapter contains reference information for the oracle.ord.im.OrdImageSignature class.

The OrdImageSignature class is used to represent an instance of the ORDSYS.ORDImageSignature database type in a Java application. The OrdImageSignature class includes a method to generate an image signature, as well as static methods to compare two image signatures.

If your application modifies the OrdImageSignature object, you must perform a SQL update operation to make those changes permanent.

Image signature indexes are used to improve performance of database operations involving image matching. To take advantage of the increased performance that is possible using image matching with image signature indexes on the underlying tables, use the IMGSimilar and IMGScore SQL operators.

See Oracle interMedia Reference for more information about image signature indexes.