ISO+IEC+19794 Minutia 生物数据交换国际标准-指纹特征点 2 Conformance 3 Normative references 4 Terms and definitions 5 Symbols and abbreviated terms 6 Minutiae Extraction 6.1 Principle 6.2 Minutia Type 6.3 Minutia Location 6.3.1 Coordinate System 6.3.2 Minutia Placement on a Ridge Ending (encoded as Valley Skeleton Bifurcation Point) 6.3.3 Minutia Placement on a Ridge Bifurcation (encoded as a Ridge Skeleton Bifurcation Point) 6.3.4 Minutia Placement on a Ridge Skeleton Endpoint 6.3.5 Minutia Placement on Other Minutia Types 6.4 Minutia Direction 6.4.1 Angle Conventions 6.4.2 Minutia Direction of a Ridge Ending (encoded as Valley Skeleton Bifurcation Point) 6.4.3 Minutia Direction of a Ridge Bifurcation (encoded as Ridge Skeleton Bifurcation Point) 6.4.4 Minutia Direction of a Ridge Skeleton End Point 6.5 Core and Delta Placement and Direction 6.6 Minutia Type Matching 6.7 Encoding of multibyte quantities 7 Finger Minutiae Record Format 7.1 Introduction 7.2 Record Organization 7.3 Record Header 7.3.1 Format Identifier 7.3.2 Version Number 7.3.3 Length of Record 7.3.4 Capture Equipment Certifications 7.4 Single Finger Record Format 7.4.1 Finger Header 7.4.2 Finger Minutiae Data 7.5 Extended Data 7.5.1 Common Extended Data Fields 7.5.2 Ridge Count Data Format 7.5.3 Core and Delta Data Format 7.5.4 Zonal Quality Data 7.6 Minutia Record Format Summary ......