ANSI/NIST-ITL 1-2011 - NIST Visual Image Processing Group ...
ANSI/NIST-ITL 1-2011 - NIST Visual Image Processing Group ... ANSI/NIST-ITL 1-2011 - NIST Visual Image Processing Group ...
ANSI/NIST-ITL 1-2011Data Format for the Interchange of Biometric and Forensic Information24.20 Field 20.996: Image hash / HASThis optional field has the hash value of the image contained in the 999 field ofthis record, calculated using SHA 256.24.21 Field 20.997: Original image reference code/ OIRThis mandatory field contains a reference number for the image. It refers to theoriginal image stored in this record. Note that the segment references arecontained in Field 20.016, if they exist. This number corresponds to the OIR thatmay be referenced as the first information item in the OIV field of other RecordTypes.24.22 Field 20.998: Geographic sample location / GEOThis optional field is composed of three optional subfields; one of which must bechosen.This optional field is composed of three optional subfields; one of which must bechosen.The first subfield (geographic reference text / GRT) is free form textdescribing a street address or other physical location.The second sufield (degree value / DEG) has the format ±xxx.xxxx±yyy.yyyy,where x refers to latitude and y refers to longitude. For example, +039.1455-077.2057.The third subfield (degree minute second value / DMS) has the format±xxxDxxMxxS±yyyDyyMyyS, where x refers to latitude and y refers tolongitude. For example, +039D08M44S-077D12M20S.Brad Wing 6/22/10 5:42 PMComment: Note the revision of this field.24.23 Field 20.999: Image data / DATANote that this data may be a still image or a video sequence. This mandatoryfield shall contain all of the data from a original source image.Each pixel of uncompressed grayscale data shall normally be quantized to eightbits (256 gray levels) contained in a single byte. If the entry in BPX Field 20.012is greater than 8, the number of bytes required to contain a pixel will be different.If compression is used, the pixel data shall be compressed in accordance withthe compression technique specified in the CGA field.25 Type-98 Information Assurance recordThe Type-98 record shall contain security information that allows for theassurance of the authenticity and/or integrity of the transaction, including suchinformation as binary data hashes, attributes for audit or identification purposes,and digital signatures. The Information Assurance (IA) record includes a commonHeader and an IA Data Block (IADB). Two mandatory fields in the IA Header are250DRAFT 2
ANSI/NIST-ITL 1-2011Data Format for the Interchange of Biometric and Forensic InformationIADB Format Owner and IADB Format Type. The IADB Format Owner fielddenotes the vendor, standards body, working group, or industry consortium thathas defined the format of the IA data (the data contained in the IADB). Thevalues in the IADB Format Type field are assigned by the format owner andrepresent a specific IADB format as specified by the format owner. This may be anon-standard, unpublished data format or a data format that has beenstandardized by an industry group, consortium, or standards body. It is thecombined IADB Format Owner/IADB Format Type value that uniquely identifiesthe IADB format.There may be multiples of Record Type 98 to satisfy mulitiple IA requirements fordifferent owners.The records that are hashed or signed or otherwise protected are those otherthan this Record and Record 1, since Record 1 is created with this record asinput.MnemonicCondcode*FieldnumberCharacterTypeTable 90 Type-98 RecordField nameMinOccur countMaxBrad Wing 6/23/10 11:03 AMComment: Table now included in recorddescription; with subfields and information itemsM 98.001 RECORD HEADER 1 1IDC M 98.002 N IMAGE DESIGNATION CHARACTER 1 1RSV 98.003 RESERVED FOR FUTURE DEFINITIONSRC M 98.004 AN SOURCE AGENCY / ORI 1 1DCD M 98.005 N IA DATA CREATION DATE 1 1DFO M 98.006 AN IADB FORMAT OWNER 1 1DFT M 98.007 AN IADB FORMAT TYPE 1 1RSV 98.008-98.199UDF 98.200-98.900RESERVED FOR FUTURE DEFINITIONUSER-DEFINED FIELDSDATA M 98.999 B INFORMATION ASSURANCE DATA BLOCK 1 1Key for Character type: N=Numeric; A=Alphabetic; AN=Alphanumeric; B=Binary or Base64Key for Cond. code: M=Mandatory; O=Optional; C-x=Conditional on Field x value; M⇑=Mandatory if the field/subfield isused; O⇑=Optional if the field/subfield is used.251DRAFT 2
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<strong>ANSI</strong>/<strong>NIST</strong>-<strong>ITL</strong> 1-<strong>2011</strong>Data Format for the Interchange of Biometric and Forensic Information24.20 Field 20.996: <strong>Image</strong> hash / HASThis optional field has the hash value of the image contained in the 999 field ofthis record, calculated using SHA 256.24.21 Field 20.997: Original image reference code/ OIRThis mandatory field contains a reference number for the image. It refers to theoriginal image stored in this record. Note that the segment references arecontained in Field 20.016, if they exist. This number corresponds to the OIR thatmay be referenced as the first information item in the OIV field of other RecordTypes.24.22 Field 20.998: Geographic sample location / GEOThis optional field is composed of three optional subfields; one of which must bechosen.This optional field is composed of three optional subfields; one of which must bechosen.The first subfield (geographic reference text / GRT) is free form textdescribing a street address or other physical location.The second sufield (degree value / DEG) has the format ±xxx.xxxx±yyy.yyyy,where x refers to latitude and y refers to longitude. For example, +039.1455-077.2057.The third subfield (degree minute second value / DMS) has the format±xxxDxxMxxS±yyyDyyMyyS, where x refers to latitude and y refers tolongitude. For example, +039D08M44S-077D12M20S.Brad Wing 6/22/10 5:42 PMComment: Note the revision of this field.24.23 Field 20.999: <strong>Image</strong> data / DATANote that this data may be a still image or a video sequence. This mandatoryfield shall contain all of the data from a original source image.Each pixel of uncompressed grayscale data shall normally be quantized to eightbits (256 gray levels) contained in a single byte. If the entry in BPX Field 20.012is greater than 8, the number of bytes required to contain a pixel will be different.If compression is used, the pixel data shall be compressed in accordance withthe compression technique specified in the CGA field.25 Type-98 Information Assurance recordThe Type-98 record shall contain security information that allows for theassurance of the authenticity and/or integrity of the transaction, including suchinformation as binary data hashes, attributes for audit or identification purposes,and digital signatures. The Information Assurance (IA) record includes a commonHeader and an IA Data Block (IADB). Two mandatory fields in the IA Header are250DRAFT 2
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