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BS ISO/IEC 19794-4:2005:2019 Edition

BS ISO/IEC 19794-4:2005:2019 Edition

$142.49

Information technology. Biometric data interchange formats – Finger image data

Published By Publication Date Number of Pages
BSI 2019 28
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This part of the ISO/IEC 19794 standard specifies a data record interchange format for storing, recording, and transmitting the information from one or more finger or palm image areas within an ISO/IEC 19785‑1 CBEFF data structure. This can be used for the exchange and comparison of finger image data. It defines the content, format, and units of measurement for the exchange of finger image data that may be used in the verification or identification process of a subject. The information consists of a variety of mandatory and optional items, including scanning parameters, compressed or uncompressed images and vendor-specific information. This information is intended for interchange among organizations that rely on automated devices and systems for identification or verification purposes based on the information from finger image areas. Information compiled and formatted in accordance with this part of the ISO/IEC 19794 standard can be recorded on machine-readable media or may be transmitted by data communication facilities.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
8 Introduction
9 1 Scope
2 Conformance
3 Normative references
4 Terms and definitions
11 5 Abbreviated terms
6 Data conventions
6.1 Byte and bit ordering
6.2 Scan sequence
12 7 Image acquisition requirements
7.1 General
7.2 Pixel aspect ratio
13 7.3 Pixel depth
7.4 Grayscale data
7.5 Dynamic range
7.6 Scan resolution
14 7.7 Image resolution
7.8 Fingerprint image location
8 Finger image record format
8.1 Record structure
8.2 General record header
8.2.1 Required fields
15 8.2.2 Format identifier
8.2.3 Version number
8.2.4 Record length
8.2.5 Capture device ID
8.2.6 Image acquisition level
16 8.2.7 Number of finger/palm images
8.2.8 Scale units
8.2.9 Scan resolution (horizontal)
8.2.10 Scan resolution (vertical)
8.2.11 Image resolution (horizontal)
8.2.12 Image resolution (vertical)
8.2.13 Pixel depth
8.2.14 Image compression algorithm
17 8.2.15 Reserved
8.3 Finger record header
8.3.1 Required fields
8.3.2 Length of finger/palm data block
18 8.3.3 Finger/palm position
19 8.3.4 Count of views
8.3.5 View number
8.3.6 Finger/palm image quality
8.3.7 Impression type
8.3.8 Horizontal line length
8.3.9 Vertical line length
8.3.10 Reserved
20 8.3.11 Finger/palm image data
21 Annex A (normative) Image quality specifications
26 Annex B (informative) Finger image data record example
27 Bibliography

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BS ISO/IEC 19794-4:2005
$142.49