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IIM metadata can be embedded into JPEG/Exif, TIFF, JPEG2000 or Portable Network Graphics formatted image files. Other file formats such as GIF or PCX do not support IIM. IIM's file structure technology has largely been overtaken by the Extensible Metadata Platform (XMP), but the IIM attribute definitions are the basis for the IPTC Core schema ...
The Exif tag structure is borrowed from TIFF files. On several image specific properties, there is a large overlap between the tags defined in the TIFF, Exif, TIFF/EP, and DCF standards. For descriptive metadata, there is an overlap between Exif, IPTC Information Interchange Model and XMP info, which also can be embedded in a JPEG file.
The focus of the group is to advance the interoperability of metadata stored in digital media. Its specification, Guidelines for Handling Image Metadata, defined the interoperability among Exif, IIM (old IPTC), and XMP with consumer digital images. The following properties were selected for interoperability: keywords
ExifTool is a free and open-source software program for reading, writing, and manipulating image, audio, video, and PDF metadata.As such, ExifTool classes as a tag editor.It is platform independent, available as both a Perl library (Image::ExifTool) and a command-line application.
The International Image Interoperability Framework (IIIF, spoken as 'triple-I-eff') defines several application programming interfaces that provide a standardised method of describing and delivering images over the web, as well as "presentation based metadata" [1] (that is, structural metadata) about structured sequences of images. If ...
It defines the carriage of important metadata, like color spaces, mastering display metadata (MDM), and EXIF, to facilitate transport, editing, and presentation. Furthermore, this part defines the XS-specific ISOBMFF boxes, an Internet Media Type registration, and additional syntax to allow embedding XS in formats like MP4, MPEG-2 TS, or the ...
Image ID length (field 1) 0–255 The number of bytes that the image ID field consists of. The image ID field can contain any information, but it is common for it to contain the date and time the image was created or a serial number. As of version 2.0 of the TGA spec, the date and time the image was created is catered for in the extension area.
There may within a single IFD be no more than one entry with any particular tag. Some tags are for linking to the actual image data, other tags specify how the image data should be interpreted, and still other tags are used for image metadata. TIFF images are made up of rectangular [13] grids of pixels. The two axes of this geometry are termed ...