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GA/T 1690.5-2019: Forensic sciences -- Examination methods for seal stamps -- Part 5: Splicing and comparison
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| GA/T 1690.5-2019 | English | 139 |
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Forensic sciences -- Examination methods for seal stamps -- Part 5: Splicing and comparison
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GA/T 1690.5-2019
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Basic data | Standard ID | GA/T 1690.5-2019 (GA/T1690.5-2019) | | Description (Translated English) | Forensic sciences -- Examination methods for seal stamps -- Part 5: Splicing and comparison | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Classification of International Standard | 13.310 | | Word Count Estimation | 6,638 | | Date of Issue | 2019-10-14 | | Date of Implementation | 2019-12-01 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1690.5-2019: Forensic sciences -- Examination methods for seal stamps -- Part 5: Splicing and comparison
---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.
Forensic sciences - Examination methods for seal stamps - Part 5.Splicing and comparison
ICS 13.310
A92
Public Safety Industry Standard of the People's Republic of China
Forensic science seal seal inspection
Part 5.Splicing comparison method
Published on October 14,.2019
2019-12-01 Implementation
Issued by the Ministry of Public Security of the People's Republic of China
Foreword
GA/T 1690 "Forensic Science Seal Seal Test" is divided into 6 parts.
---Part 1.Microscopic inspection method;
---Part 2.Coincidence comparison method;
---Part 3.Detailed feature comparison method;
---Part 4.Measurement comparison method;
---Part 5.Splicing comparison method;
---Part 6.Line drawing comparison method.
This part is part 5 of GA/T 1690.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part is proposed by the Sub-Technical Committee of National Criminal Technology Standardization Technical Committee (SAC/TC179/SC10) and
Be in charge.
This section was drafted by. Tianjin Public Security Bureau, Physical Evidence Appraisal Center of the Ministry of Public Security, Daqing Public Security Bureau.
The main drafters of this section. Yu Jianmin, Gao Yuan, Yan Haiqian, Jiang Zhongjiao, Hou Jianzhong, Zhao Yuanxiang.
Forensic science seal seal inspection
Part 5.Splicing comparison method
1 Scope
This part of GA/T 1690 stipulates the method specification for the inspection of seal seals by the stitching comparison method in the field of forensic science.
This section applies to the inspection of seals and seals in the field of forensic science.
2 Equipment
Copier, scanner, camera, cutting tool, graphics (image) processing software with splicing function, comparison microscope, document inspection instrument, etc.
3 Inspection
3.1 Copy the seal
3.1.1 Copy method
Copying, scanning, photographing and other methods can be used to copy the inspection seal and sample seal under the same conditions.
3.1.2 Copy requirements
The copy should clearly reflect the characteristics of the test material seal and sample seal.
3.2 Cutting of copies
For the printed copy of paper, you can use the cutting tool to physically cut; for the printed image format, you can use the cutting function of the software
Cut it.
3.3 Splicing comparison
3.3.1 Physical stitching comparison
Physical stitching comparison includes.
a) The printed copy of the paper is cut into two or more parts at the same position, and the complementary parts are spliced along the cutting line;
b) The folding line or cutting line should try to pass through the part with more graphics in the printed text.
3.3.2 Comparative microscope stitching comparison
Place the matched seals horizontally on the stage and perpendicular to the optical axis, using the same magnification and brightness.
The text is compared with graphics.
3.3.3 Software stitching comparison
Use a text detector or other graphics (image) processing software with splicing function to collect and compare the printed text.
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