GB/T 29349-2023Forensic sciences—Requirements for photography and videography of scene (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 29349-2012 "On-site photography and video recording requirements". Compared with GB/T 29349-2012, except for structural adjustments and In addition to editorial changes, the main technical changes are as follows:

---The ICS number has been changed (see cover, cover of 2012 edition);

---Changed the standard name (see cover, cover of 2012 edition);

---Changed the "scope" (see Chapter 1, Chapter 1 of the 2012 edition);

---The terms and definitions of "on-site", "photography and video recording of key parts of the site", "opposite photography method" and "multi-directional photography method" have been changed (see 3.1, 3.5, 3.7, 3.8, 2012 version of 3.1, 3.5, 3.7, 3.8), added the term and definition "aerial photography method" (see 3.12), deleted the term Terminology and definition of "video shooting technology" (see 3.12 of the 2012 edition);

---Added "storage medium" and its requirements (see 4.1.2);

---Deleted the "close-up adapter ring, close-up bellows and close-up focusing guide rail" and their requirements (see 4.1.2.3 of the 2012 version);

---Changed the requirements for "accessory equipment for photography" (see 4.1.8, 4.1.7 of the 2012 version), and deleted "photosensitive materials" (see 2012 version 4.1.8);

---Changed the requirements for "camera" (see 4.2.1, 2012 version of 4.2.1);

---Deleted "recording materials" and its requirements (see 4.2.2 of the 2012 version);

---Added "storage medium" and its requirements (see 4.2.2);

---Added the requirement "date and time should be calibrated before use" (see 5.5);

---Changed the processing method "when the brightness difference between the environment background and the subject is too large" (see 5.10, 2012 version 5.14);

---Changed some requirements for "exposure" (see 5.13, 5.11 of the 2012 version);

--- Added requirements for "on-site photography and video output results" (see 5.15);

---Changed the "main content of on-site shooting" (see Chapter 6, Chapter 6 of the 2012 version);

---Added "Aerial Photography Method" related content (see 8.1.2, 8.2.2);

---Added "Avoid strong reflections" (see 8.2.3);

---Changed some contents of "Key Points for Shooting Key Parts on Site" (see 8.3, 2012 version of 8.3);

---Changed part of the "Key Points for On-site Detailed Photography" [see d) in 8.4.5, d) in 8.4.5 of the 2012 version].

1 Scope

This document specifies the equipment requirements, overall requirements, main content, implementation steps and methods for on-site photography and video recording in the field of forensic science. Points.

This document applies to photography and video recording of all types of scenes in the field of forensic science in my country.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 29298 General specifications for digital (coded) cameras

GB/T 29350 Forensic Science Digital Imaging Technology Rules

GA/T 120 Forensic Science Video Image Examination Terminology

GA/T 591 Technical conditions for criminal photography equipment

3 Terms and definitions

The terms and definitions defined in GA/T 120 and below apply to this document.