PF/XTech/HTML5/Metadata
Metadata
NOTE: As of 2011, this wiki document is obsolete -- please refer to the HTML WG wiki document on Metadata
Use Case: Exposing Image Descriptions
Exposing metadata image descriptions like Exchangeable Image File (EXIF), International Press Telecommunications Council (IPTC), and Extensible Metadata Platform (XMP), so that users can access them.
Scenarios
- A photographer takes a photo with his SLR digital camera. He describes the image in camera via text input (LCD monitor and multi-selector). It is stored in EXIF. He uploads that image to a photo image gallery application that does not offer a means to enter a text alternative. He would like to have that text description available for his visually impaired friends to access directly.
- A graphic designer creates an image in Photoshop. From the file menu, he chooses "File Info" then enters a IPTC headline and description. He uploads that image to a web page. A visually impaired person wants to directly access that headline and description.
Requirements
- A way to directly access EXIF, IPTC, XMP data (Dom access?)
References
- Metadata Working Group (MWG)
- International Press Telecommunications Council (IPTC)
- Exchangeable Image File (EXIF)
- Extensible Metadata Platform (XMP) - Adobe.
- The PHP JPEG Metadata Toolkit
- CGM (Computer Graphics Metafile
- JPEG Metadata Format Specification and Usage Notes
- Image MetaData JPEG - Perl extension for showing/modifying JPEG (meta)data.
- PNG Metadata Format Specification
- Labeling Digital Photos
- Media metadata properties - Rob Burns.
- DOM method to return the EXIF metadata for an image as a JSON dictionary - T.V. Raman.
- Please review use cases relating to embedding micro-data in text/html - Ian Hickson.
- (rough notes - danja)