智能手机数字图像的溯源取证研究综述

A Review of Traceability and Forensics Research Based on Digital Images of Smartphone

数字图像作为司法诉讼证据的重要性日益显著,智能手机拍摄的数字图像的溯源取证问题引起了国内外学者的广泛关注,这是法庭科学领域继数字图像真实性、原始性、完整性之后提出的新要求、新方向。本文主要针对智能手机的数字图像溯源取证相关问题,结合近些年国内外的研究情况,从数字图像溯源取证的技术概述、研究进展、数据集构建三个方面进行详细的阐述,同时提出未来溯源取证研究的理论体系、方法标准、技术要点等意见以及溯源数据集建立的要求,以期为之后的理论研究与实战应用提供思路和借鉴。

The importance of digital images as evidence in judicial proceedings has become increasingly significant.The issue of traceability and forensics of digital images based on smartphones has attracted widespread attention from scholars at home and aboard.It is a new requirement and direction in thefield of forensic science following the authenticity,originality and integrity of digital images.This paper mainly focuses on the digital image traceability and forensics of smartphones from four aspects.Firstly,the traceability technology and traceability characteristics of smartphone devices are introduced.In particular,smartphones have front and rear cameras,complex image processing modules and extensive transmission in social media.Therefore,the research on the traceability of smartphone devices has important practical application significance,and it is also challenging.Secondly,combined with the research situation at home and abroad in recent years,this paper introduces the research progress of smartphone device traceability from the perspectives of deep learning-based,image characteristics and image formation conditions.At present,deep learning-based traceability methods have made good progress and achieved good results on experimental datasets.Thirdly,this paper introduces 9 datasets in detail,including original images and processed images,which are convenient for readers to apply and refer to according to their own research content.The VISION dataset is an image library about smartphones established earlier,including original images,images downloaded from social media and images of different quality.It is the earliest and widely used dataset in thefield of smartphone device traceability.The dataset built by Zhang Yongsheng is specially used for smartphone image traceability,which is the largest smartphone digital image dataset publicly available in China.It involves many devices,scenes and quantities,including images and videos,and the images are stored in the default way.Finally,this paper puts forward suggestions on smartphone device traceability research,including theoretical research and data set establishment.This article is expected to provide ideas and reference for the theoretical research and practical application in thefield of forensic science.