GA/T 2000.252-2019 in English

VALID

Information codes for public security industry—Part 252:Codes for formats of image files

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Standard No:	GA/T 2000.252-2019
Document status:	VALID
Title in English:	Information codes for public security industry—Part 252:Codes for formats of image files
Title in Chinese:	公安信息代码第252部分：图像文件格式代码
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
ICS Classification:	35.040-Character sets and information coding
Chinese Classification:	A90-Social and public safety in general
Professional Classification:	GA-Security
Related Keywords:	public security image evidence public security industry part image formats mainstream image formats public security field
Related Topics:	public security jpg Public security standards Thesis code Public security information code Public Security Information Code Part 32 Public security information code Public Security Information Code Part 22 Public security information code 45 Public Security Information 28 Industry standard public security information code Public security information file code east ga/t1012-2019 ga/t49-2019

本部分规定了图像文件格式的代码。
本部分适用于公安信息化建设以及信息的处理与管理。

Introduction

Interpretation of the core content of the standard

As the 252nd component of the GA/T 2000 series of standards, this part specifically establishes a unified 2-digit coding system for the standardization of file formats in the management of public security image evidence. The code table contains 15 mainstream image formats from 01 to 15, as well as 99 "other" catch-all clauses.

Technology evolution and standard background

With the popularization of video surveillance systems in the public security field, the differences in image formats generated by equipment from multiple manufacturers have led to confusion in evidence management. This standard solves the following problems through coding:

Format recognition barriers during evidence exchange
Difficulties in cross-system data integration
Format compatibility risks for long-term archiving

Technical dimension	Old version practice	Improvements of this standard
Coding system	Customized identification for each system	National unified digital code
Format coverage	Basic format only	Including new formats such as JP2
Extensibility	No reservation mechanism	Flexible expansion of 99 codes

Key code analysis

Typical application scenario - video investigation

When retrieving images from a traffic checkpoint, the police in a certain place used the code 03 to quickly identify JPEG format evidence, which was 40% more efficient than the traditional file extension recognition method.

Implementation Suggestions

Built-in code conversion module in the construction of police cloud platform
The evidence management system should support two-way mapping (code ↔ format description)
Parsing tools are required for professional formats such as KDC(05)

Standard Outlook

With the popularity of new formats such as HEIF/AVIF, it is recommended in subsequent revisions:

Add reserved codes in the range of 16-98
Supplement format technical parameter metadata standards
Establish a dynamic update mechanism

More samples: DL/T 5154-2012 NB/T 47013.2-2015 JGJ 94-2008

Sample only — not a preview of GA/T 2000.252-2019

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