Highly Transparent Steganography Scheme of Speech Signals into Color Images Using Quantization Index Modulation

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• 关键词：Steganography ; Discrete wavelet transform ; Quantization index modulation ; Imperceptibility
• 刊名：Lecture Notes in Computer Science
• 出版年：2016
• 出版时间：2016
• 年：2016
• 卷：9703
• 期：1
• 页码：241-250
• 全文大小：3,220 KB
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• 作者单位：Diego Renza (18)
  Dora M. Ballesteros L. (18)
  Jeisson Sanchez (18)
  
  18. Universidad Militar Nueva Granada, Bogotá, Colombia
  
• 丛书名：Pattern Recognition
• ISBN：978-3-319-39393-3
• 刊物类别：Computer Science
• 刊物主题：Artificial Intelligence and Robotics
  Computer Communication Networks
  Software Engineering
  Data Encryption
  Database Management
  Computation by Abstract Devices
  Algorithm Analysis and Problem Complexity
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1611-3349
• 卷排序：9703

文摘

A highly transparent steganography scheme of speech signals into color images based on Quantization Index Modulation (QIM) is presented in this paper. The proposed method takes advantage of the low distortion in the host image introduced by the scalar quantization of its wavelet coefficients. The stego image is highly similar to the host image, and the secret content is imperceptible. The secret message is recovered at the receiver with high correlation to the original speech signal. For the purpose of increasing the security of the system, an external mask is used to encrypt the secret content before the embedding process. Several tests were carried out in order to quantify the influence of the size of the quantizer (delta) on the quality of the recovered secret content and the transparency of the stego image.