圖像及音頻信號中隱蔽嵌入信息存在性的統(tǒng)計檢驗
Statistic test of hidden data existence in digital image and audio signals
-
摘要: 作為對信息隱藏攻擊和反攻擊研究的一個環(huán)節(jié),正確判斷數(shù)字圖像和音頻信號中是否存在隱蔽嵌入信息具有重要意義。該文提出一種統(tǒng)計分析方法,基于數(shù)據(jù)的時(空)域局部相關特性給出3個性能互補的判別準則,用來對視聽覺無差異的兩個樣本進行檢驗,以辨別其中哪一個可能攜帶有隱蔽信息。實驗結果表明,判別準確率令人滿意。Abstract: As an important aspect in the study of attacks against information hiding and the development of anti-attack techniques, this paper describes a method to compare a pair of perceptibly identical digital images or audio signals in order to single out the one that contains embedded hidden-information. By means of statistic analyses and comparison between the two signals, and making use of short-term correlativity in the space/time domain, three criteria are proposed, which are mutually complementary, and can be used in statistical tests to identify signals with embedded data. The experimental results are satisfactory.
-
計量
- 文章訪問數(shù): 2369
- HTML全文瀏覽量: 118
- PDF下載量: 598
- 被引次數(shù): 0
下載:
