Extensible Metadata Platform. XMP logo The Extensible Metadata Platform (XMP) is an ISO standard, originally created by Adobe Systems Inc., for the creation, processing and interchange of standardized and custom metadata for all kinds of resources. XMP standardizes a data model, a serialization format and core properties for the definition and processing of extensible metadata.
It also provides guidelines on how XMP should be embedded into a number of popular image, video and document file formats (e.g. JPEG and PDF) without breaking their readability by applications that aren't aware of XMP. Therefore, the non-XMP metadata have to be reconciled with the XMP properties. Embedding metadata avoids a lot of problems that occur when metadata are stored separately, but for other use cases they can also be stored as a sidecar file. The XMP data model, serialization format and core properties have been published by the International Organization for Standardization as ISO 16684-1:2012 standard.[1] XMP data model[edit] <? Python-xmp-toolkit - Python XMP Toolkit - a python library for reading, writing and manipulating XMP metadata. Welcome — Python XMP Toolkit v1.0 documentation. Exploring JPEG Metadata | Mad Irish . net. 30 November -0001 About JPEG JPEG is a compression algorithm for digital images described in ISO 10918-1 ( It is a format specification that tells a computer how to render an image based on the bits that comprise the image file.
Because all computerized data is stored as ones and zeros on a computer, it is necessary to provide a translation framework so the computer can render human readable images out of the binary data. JPEG is one of the most common image formats, but several others exist, including GIF, PNG, TIFF and others. The JPEG specification includes formatting definitions for data within the image file such as the delimiters of the actual image data, details about compression algorithms, image size, and other parameters. About MetaData Metadata is descriptive information used to classify or summarize data. On Windows XP On a standard Windows XP, SP 3 machine it is fairly straightforward to view and modify image metadata. Conclusions. EXIF.py. Exchangeable image file format. This standard consists of the Exif image file specification and the Exif audio file specification. Background[edit] The Japan Electronic Industries Development Association (JEIDA) produced the initial definition of Exif.
Version 2.1 of the specification is dated 12 June 1998. JEITA established Exif version 2.2 (aka "Exif Print"), dated 20 February 2002 and released in April 2002.[3] Version 2.21 (with Adobe RGB support) is dated 11 July 2003, but was released in September 2003 following the release of DCF 2.0. The latest, version 2.3, released on 26 April 2010 and revised in May 2013, was jointly formulated by JEITA and CIPA. The metadata tags defined in the Exif standard cover a broad spectrum: Date and time information. Technical[edit] The Exif tag structure is borrowed from TIFF files. When Exif is employed for JPEG files, the Exif data are stored in one of JPEG's defined utility Application Segments, the APP1 (segment marker 0xFFE1), which in effect holds an entire TIFF file within.