Piecewise Permutation Steganography for 3D Humanoid Mesh Models

• Main Authors: Lin-shan Jhu, 林珊竹
• Other Authors: Hsin-chih Lin
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/84057701387337562512

碩士 === 國立臺南大學 === 數位學習科技學系碩士班 === 97 === A new steganographic method for hiding secret information into a 3D humanoid mesh model is proposed in this study. First of all, the 3D humanoid mesh model is divided into several segments. According to the mesh connectivity of each segment, the proposed method uses Bogomjakov et al.’s permutation steganography to hide messages in the index representation of the segment. We also present a new concept of piecewise steganography which embeds messages into segments in a specific order to raise security and applicability of the embedded messages. The proposed method is error-free since it does not modify the geometry of the cover model. Even if the stego-model has a different pose due to articulate motions, the embedded message can be extracted from the model with no errors. Experiential results reveal the effectiveness of the proposed method.