Steganalysis of 3D objects using statistics of local feature sets

TY - JOUR

T1 - Steganalysis of 3D objects using statistics of local feature sets

AU - Li, Zhenyu

AU - Bors, Adrian Gheorghe

N1 - © 2017 Elsevier Inc. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

PY - 2017/11

Y1 - 2017/11

N2 - 3D steganalysis aims to identify subtle invisible changes produced in graphical objects through digital watermarking or steganography. Sets of statistical representations of 3D features, extracted from both cover and stego 3D mesh objects, are used as inputs into machine learning classifiers in order to decide whether any information was hidden in the given graphical object. The features proposed in this paper include those representing the local object curvature, vertex normals, the local geometry representation in the spherical coordinate system. The effectiveness of these features is tested in various combinations with other features used for 3D steganalysis. The relevance of each feature for 3D steganalysis is assessed using the Pearson correlation coefficient. Six different 3D watermarking and steganographic methods are used for creating the stego-objects used in the evaluation study.

AB - 3D steganalysis aims to identify subtle invisible changes produced in graphical objects through digital watermarking or steganography. Sets of statistical representations of 3D features, extracted from both cover and stego 3D mesh objects, are used as inputs into machine learning classifiers in order to decide whether any information was hidden in the given graphical object. The features proposed in this paper include those representing the local object curvature, vertex normals, the local geometry representation in the spherical coordinate system. The effectiveness of these features is tested in various combinations with other features used for 3D steganalysis. The relevance of each feature for 3D steganalysis is assessed using the Pearson correlation coefficient. Six different 3D watermarking and steganographic methods are used for creating the stego-objects used in the evaluation study.

KW - 3D Objects

KW - Information hiding

KW - Local feature

KW - Steganalysis

KW - Steganography

KW - Watermarking

UR - http://www.scopus.com/inward/record.url?scp=85021098690&partnerID=8YFLogxK

U2 - 10.1016/j.ins.2017.06.011

DO - 10.1016/j.ins.2017.06.011

M3 - Article

VL - 415-416

SP - 85

EP - 99

JO - Information Sciences

JF - Information Sciences

SN - 0020-0255

ER -