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GB/T 23865-2009 English PDF

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GB/T 23865-2009: The scaled photography method
Status: Valid
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GB/T 23865-2009English139 Add to Cart 3 days [Need to translate] The scaled photography method Valid GB/T 23865-2009

PDF similar to GB/T 23865-2009


Standard similar to GB/T 23865-2009

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Basic data

Standard ID GB/T 23865-2009 (GB/T23865-2009)
Description (Translated English) The scaled photography method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A92
Classification of International Standard 13.310
Word Count Estimation 6,664
Date of Issue 2009-03-09
Date of Implementation 2009-11-01
Regulation (derived from) Announcement of Newly Approved National Standards No. 7, 2009 (No. 147 overall)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the visual inspection techniques in evidence, traces of the recorded pictures proportionate approach is evidence, traces of photographic camera especially the basic requirements of inspection and appraisal. This standard applies to judicial evidence examination photographic work.

GB/T 23865-2009: The scaled photography method

---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.
The scaled photography method ICS 13.310 A92 National Standards of People's Republic of China The proportion of photographic rules Posted 2009-03-09 2009-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by the People's Republic of China Ministry of Public Security. This standard by the National Standardization Technical Committee of Criminal technical inspection camera Technical Committee (SAC/TC179/SC5) centralized. This standard was drafted. Ministry of Public Security Evidence Identification Center. The main drafters of this standard. Zhouyun Biao, Xu Xiaojing Yu Tao. The proportion of photographic rules

1 Scope

This standard specifies the art audio visual inspection evidence, traces by camera recording method of proportion, is evidence, in particular traces of photographic inspection Identification of the basic requirements of photography. This standard applies to the judiciary of evidence examination photographic work.

2 Terms and definitions

The following terms and definitions apply to this standard. 2.1 With centimeter scale as the basic unit of measurement, the scale with the same subject photographed recorded, according to a scale to measure the original size Its characteristics; prevent deformation, restitution of a shooting method. Method 3 rule 3.1 Measurement of smaller exhibits, traces should be selected as the minimum measurement unit to mm-scale black and white, color scale and transparent scale, The error rate can not exceed one per cent of its edges shall be legible scale. 3.2 Measurement larger exhibits, traces of tape should be used. Common are steel tape and leather tape measure, generally in cm measuring scale unit length More than 2m. 3.3 before the shooting, would not reflective, crease-free flat scale, the subject is placed on one side of the body, pointing to the side of the scale subject. Take When taken, the camera lens and the subject and should be kept vertical scale, the scale should be subject at the same focal plane. 3.4 When shooting lateral object, the scale should be placed below the subject, and the screen is proportional to the lateral placement; shooting longitudinal object scale should Placed on one side of the subject, and the screen is proportional to the longitudinal placement. 3.5 black and white photography, as the subject is dark tone, choose black white stripe substrate dimensions; as a subject light colors, use white Substrate color black stripe scale. When color photography, in addition to the choice of the above dimensions, you can also choose a variety of color and white ratio ruler. Transparent subject when shooting, you can choose a transparent scale. 3.6 is subject more than 10cm, in order to ensure an accurate picture rata reduction scale should be used when shooting is not less than 10cm. 3.7 Shooting stride, rutting and other large range traces of evidence, should be in proportion to one side of the tape is placed through the screen in the subject. 3.8 when shooting single footprint, the scale should be placed at the side of the arch. When using right-angle scale, the scale of the short side should be placed in the heel Below. 3.9 When shooting fingerprints, the scale should be placed in the finger and fingerprint perpendicular or parallel to the bottom section is placed on the side of fingerprints. 3.10 stereoscopic shooting mark evidence, the subject should be placed on one side of the scale the object in the same plane. 3.11 proportional photographic lens used should use a macro lens or a standard lens, you should not use a wide-angle or fish-eye lens. When using a digital camera 3.12 proportional photographic lens focal length should be set to change according to frame size digital camera imaging device Operators, the lens focal length standard lens focal length.

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