| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GA 775-2008 | English | 199 |
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Fingerprint minutia coordination and direction system
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GA 775-2008
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PDF similar to GA 775-2008
Basic data | Standard ID | GA 775-2008 (GA775-2008) | | Description (Translated English) | Fingerprint minutia coordination and direction system | | Sector / Industry | Public Security (Police) Industry Standard | | Classification of Chinese Standard | A92 | | Classification of International Standard | 13.310 | | Word Count Estimation | 4,457 | | Date of Issue | 2008-07-24 | | Date of Implementation | 2008-07-24 | | Older Standard (superseded by this standard) | GA 426-2003 | | Quoted Standard | GA 773-2008, False | | Issuing agency(ies) | Ministry of Public Security | | Summary | This standard specifies the fingerprint feature points and fingerprint direction of the representation. This standard applies to fingerprint automatic identification system data exchange. | GA 775-2008: Fingerprint minutia coordination and direction system---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Fingerprint minutia coordination and direction system
ICS 13.310
A92
People's Republic of China Public Security Industry Standards
Partially replaced GA 426-2003
Fingerprint with the fingerprint feature point direction coordinate representation
Posted 2008-07-24
2008-07-24 implementation
People's Republic of China Ministry of Public Security
Foreword
All the technical contents of this standard is mandatory.
This standard replaces GA 426-2003 "AFIS Data Interchange File Format" in Appendix D (normative). Fingerprint
Characteristics of the coordinate system definition. Not replace the content will be included GA 426-2008 "fingerprint data exchange formats" on.
This standard has GA 426-2003 Appendix D compared with the following changes.
--- Increasing the fingerprint feature point representation;
--- Increasing the representation of the fingerprint direction;
--- Revised its content.
This standard was proposed by the Ministry of Public Security Criminal Investigation Bureau.
This standard by the National Criminal Criminal Information Technology Standardization Technical Committee Technical Committee (SAC/TC179/SC2) centralized.
This standard was drafted. Ministry of Public Security Criminal Investigation Bureau, Jiangsu Provincial Public Security Criminal Investigation Bureau, Ministry of Public Security Evidence Identification Center, Aerospace Science and Industry collection
Group II Hospital 2 seven.
The main drafters of this standard. Wangying Wei, Zhou Xinmin, Zhangguo Chen, Su Yueming, Xie Xiaodan, Yan Xuesong, Yanhui Yong.
The standard commission Ministry of Public Security Criminal Investigation Bureau is responsible for interpretation.
Fingerprint with the fingerprint feature point direction coordinate representation
1 Scope
This standard specifies the representation of the fingerprint with the fingerprint feature point direction.
This standard applies to AFIS data exchange.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GA 773-2008 AFIS term
3 Terms and Definitions
GA 773-2008 terms and definitions apply to this standard established.
4 fingerprint feature coordinates
Fingerprint feature coordinate system shown in Figure 1. In the upper left corner of the fingerprint image coordinate origin (0,0), X-axis coordinate value increases from left to right, Y axis
Coordinate values increase from top to bottom, X, Y values in pixels. Ten fingerprint image X, Y value is greater than or equal to 0 and less than 640, refers to the scene
Profile image of X, Y value is greater than or equal to 0 and less than 512. Vector angle in degrees, with a non-negative integer, and X-axis is parallel with the X and
Increasing direction 0 °, counterclockwise rotation angle increases, the angle range of 0 ° ~ 359 °. Wherein no direction, an angle with three ASCII codes
Space ( "SP") to fill out.
Figure 1 fingerprint feature coordinates
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