DIG35 Specification: Metadata for Digital Images. Version 1.0

Chapter 2:Metadata Architecture DIG35 Specification 2000-08-30Figure 2-3: Additional conceptual structure of a digital imageIn addition to the metadata that is closely associated with the file format image data, there are other metadata that are usedthroughout the lifecycle of the image data. Such metadata may include print condition information such as output media size,the number of copies and service order information (i.e., delivery instructions), and payment methods. While this informationmay be very useful in various applications, it is out of scope of this specification.2.3 Metadata Interchange Model2.3.1 Image Pixel Data InterchangeThe most important aspect of digital imaging is to be able to view, share, and enjoy the actual image in a variety of ways. Thoseimages are, in most cases, captured directly with a digital camera or created by scanning a film or prints. These digital imagesare stored as an image file on a storage media to be used in various ways to fulfill the objectives of the user. Typical uses, forexample, are opening an image into an application to be printed for personal pleasure or used to create post cards and/or webpages to share them with family members or friends. The fundamental value to the user is the capability of viewing the capturedimage in a variety of ways and at different times.This type of image data interchange and work flow are enabled due to the fact that current devices and applications support animage file format model which is well defined and standardized. Thus, the actual image data can be interchanged betweenvarious file formats.Figure 2-4 shows a typical model of image data interchange. Filters include image libraries or plug-in type applications thatenable the system to read and store the image data into its native (proprietary) data format. As long as both systems support thefile format model, the image data can be successfully interchanged.Version 1.0 © 2000 Digital Imaging Group, Inc. 5