acknowledgements for ansi/nist-itl 1-2011 - NIST Visual Image ...

ANSI/NIST-ITL 1-2011 - UPDATE 2013 DRAFT VERSION'user-defined' in the character type column of the record layout tables.C.4.2 Grayscale dataBinary data so constructed as to represent a grayscale image shall be converted to ASCIIcharacters prior to transmission using Base-64 encoding. See Annex A A.3: Base-64encoding.C.4.3 Binary dataBinary image data may be constructed in either compressed or uncompressed form, thenshall be converted to ASCII characters prior to transmission using Base-64 encoding. SeeAnnex A A.3: Base-64 encoding. Binary data fields, other than image data, in the Type-4, 7,and 8 records have been given conventional XML element tags. For XML encoding, thesedata elements and their content shall be represented as ASCII characters.C.5 Data Conventions Specific to XMLC.5.1 Record formatAn exchange package shall consist of two or more logical records. See Section 5.1Structure of a transaction. For each logical record contained in the package, severalinformation elements appropriate to that record type shall be present. Complex elementsmay contain one or more complex or simple elements according to the rules of well-formedXML. Taken together, these items are used to convey different aspects of the data containedin a data information object. To the extent possible, the objects used have been defined as apart of the National Information Exchange Model (NIEM). Some information objects maybe repeated multiple times.The XML schema referenced for this encoding define the structure and order of the elementsin the information exchange package. To the extent possible, the schema define data typesand constraints that enforce the allowable content rules of the base standard. Nevertheless,the XML schema may not strictly enforce the allowable content. The base standard definesallowable content, and its requirements shall be met by implementers regardless of encodingmethod.May, 2013 DRAFT VERSION UPDATE 2013 Page 459