arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.03206eess.IVcs.CV
收藏

用于第一量化估计的深入DCT系数分布分析

In-Depth DCT Coefficient Distribution Analysis for First Quantization Estimation

University of Catania(卡塔尼亚大学);University of Cagliari(卡利亚里大学)

Sebastiano Battiato, Oliver Giudice, Francesco Guarnera, Giovanni Puglisi

摘要:

JPEG双重压缩图像中痕迹的提取是一个非常重要的研究课题。适当地利用这些见解,可以执行第一量化估计(First Quantization Estimation,简称QQE)以获得源相机模型识别(CMI),从而重建数字图像的历史。本文提出了一种基于统计和机器学习相结合的方法来估计JPEG双重压缩图像的一阶量化因子。所提出的解决方案被证明工作,没有任何先验假设的量化矩阵。实验结果和与国家的最先进的比较表明,所提出的技术的优点。

英文摘要:

The exploitation of traces in JPEG double compressed images is of utter importance for investigations. Properly exploiting such insights, First Quantization Estimation (FQE) could be performed in order to obtain source camera model identification (CMI) and therefore reconstruct the history of a digital image. In this paper, a method able to estimate the first quantization factors for JPEG double compressed images is presented, employing a mixed statistical and Machine Learning approach. The presented solution is demonstrated to work without any a-priori assumptions about the quantization matrices. Experimental results and comparisons with the state-of-the-art show the goodness of the proposed technique.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑