A Blind Steganalysis Algorithm of QIM-Based Hiding

Quantization index modulation (QIM) has been gaining popularity in the information hiding. The paper analyzes the coefficient histogram of transform domain of stego audio produced by QIM-based hiding, constructs feature vector using distances of bigger values of coefficient histogram, builds feature matrix, presents a blind steganalysis algorithm for QIM-based hiding. The experiments show the algorithm is effective. The algorithm can applied to steganalyze other QIM-based hiding in different transform domains.