|Oracle® Multimedia Reference
11g Release 1 (11.1)
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This document summarizes the changes to this guide since the previous release as well as the new features introduced in the current release.
The following changes have been made to this guide since Oracle Database 10g Release 2 (10.2):
In Oracle Database 11g Release 1 (11.1), the name Oracle interMedia has been changed to Oracle Multimedia. The feature remains the same, only the name has changed. References to Oracle interMedia will be replaced with Oracle Multimedia, however some references to Oracle interMedia or interMedia may still appear in graphical user interfaces, code examples, and related documents in the Documentation Library for Oracle Database 11g Release 1 (11.1).
Title page - Added DICOM to the list of supported media in the summary description.
Preface - Added a new subsection for Syntax Descriptions, including a cross-reference to Oracle Database SQL Reference for information about how to read syntax diagrams.
Chapter 2 - Replaced references to 4GB BLOB limits with new limits (8 TB to 128 TB, depending on the block size). Included a cross-reference to Oracle Database SecureFiles and Large Objects Developer's Guide.
Chapter 5 - Removed ORDImageSignature API documentation, which is deprecated in this release. Added more cross-references to Appendix D for the process( ) and processCopy( ) methods.
Chapter 7 - Updated the table creation examples for the four object types to show support for SecureFiles. Updated the examples for the common methods export( ) and importFrom( ) to reflect source code and directory cleanup work in the demo scripts.
Chapter 8 - Replaced references to 4GB BLOB limits with new limits (8 TB to 128 TB, depending on the block size). Removed the pragma restriction for the getContentLength( ) and getSourceAddress( ) methods.
Appendix G - Revised the third column in the table of DICOM encoding rules to replace the support codes with meaningful information in each table row.
Appendix I - Included most of the material from the Still Image chapter.
Appendix J - Added ORDImageSignature, ORDImageIndex, and image processing operators to the list of deprecated API components.
Index - Added new index entries and improved existing entries.
Ongoing minor improvements and bug fixes
Oracle Database 11g Release 1 (11.1) includes major new features for Oracle Multimedia DICOM and improvements in the area of performance and scalability.
Oracle Multimedia DICOM was introduced in release 10.2. Release 11.1 adds the following Oracle Multimedia DICOM features:
Creation of DICOM objects
DICOM image processing
DICOM object conformance validation
DICOM metadata extraction
DICOM format support
Making DICOM objects anonymous
ORDDicom object type
Run-time, updatable DICOM data model
Release 11.1 also includes performance and scalability improvements. This release provides improvements for applications that require increased throughput in certain image processing operations as well as the ability to manage very large media objects.
In this release, the size limit of media data that can be stored and retrieved within database storage structures (BLOB) in an Oracle Multimedia object type in the database is extended to the BLOB size limit, which is between 8 terabytes (TB) and 128 terabytes depending on the block size.
In addition to storing and retrieving large images, Oracle Multimedia can also extract image attributes including height, width, and compressionFormat for images that contain up to two billion pixels, or with a resolution of up to 46000x46000. For images that support metadata extraction (IPTC, EXIF and XMP), Oracle Multimedia can extract and manage embedded metadata for any size image that it can store.
Oracle Multimedia provides image processing functions that change image content. For example, you can scale and crop an image or convert it to a different file format. Processing an image requires interpreting the pixel values of the image, an operation that often impacts system performance and memory. As a result, Oracle Multimedia may be unable to successfully process images that it can successfully store. The maximum image size that Oracle Multimedia can process depends on the image format and the system platform. See the Oracle Multimedia
README.txt file for guidelines on image processing limits for each supported format.
Performance and scalability improvements have been made for the most popular image processing operation, generating a thumbnail image. Significant performance improvements have been made for generating these images from TIFF and JPEG sources, as well as from DICOM sources with JPEG encoding. In addition, improvements in scale-down operations enable the fast generation of thumbnail images from very large source images (JPEG, TIFF, and DICOM with JPEG or RAW encoding.)
In this release, Oracle Multimedia also supports the next generation of LOBs, which is called Oracle SecureFiles. SecureFiles introduces a completely reengineered large object (LOB) to dramatically improve performance and significantly strengthen the native content management capabilities of Oracle Database. Oracle Multimedia object types, methods, and packages have been tested to ensure correct operation with SecureFiles. Oracle recommends using SecureFiles to store media content within Oracle Multimedia object types to reap the performance benefits of this new BLOB implementation.