Generalized collage steganography on images 摘要

原文摘要 :

In recent years, various steganography and steganalysis methods have been proposed. Collage steganography, a new type of steganographic method, has been introduced to hide the secret message in a way other than the traditional methods. The limitation of the method is the capacity. This paper presents a new generalized collage steganography, an extension of collage steganography, to improve the capacity problem. The secret message is hidden by incorporating object images with transparent features into a cover image. A proper cover image is chosen based on prior capacity analysis. The selected object image and the translation, rotation and scaling factors in the affine transformation are used to hide the secret message as well as the image pixels, coefficients and/or header files. The appearance of the cover image is changed due to the addition of the object image for embedding. The information is retrieved via template matching techniques. The results demonstrate the relationship between different images and its capacity. Several steganographic image examples are illustrated. Comparisons between the collage steganography and the generalized collage steganography show a higher capacity when using the new steganographic method.



中文摘要 :

近年提出各種隱藏和隱藏寫入分析方法。steganographic 是一種新型現已推出以隱藏非傳統的方法的方式的秘密消息。有限制的方式是有能力的。本文提供了一個新的廣義的拼貼隱藏提高能力問題的拼貼隱藏的延伸。機密訊息是藏在以通過將物件圖像的透明功能合併到一個封面圖像裡。適當的封面圖像選擇基於以前的能力分析。若要隱藏機密的資訊，以及圖像的圖元、 係數或標頭檔中使用所選的物件的圖像和翻譯、 旋轉和仿射變換縮放因數。由於內嵌物件圖像的添加而更改封面圖像的外觀。有關通過匹配技術的範本中檢索。結果顯示不同的圖像和能力之間的關係。幾個 steganographic 圖像示例被插圖。隱藏及廣義的拼貼隱藏的比較高容量時顯示使用新的 steganographic 方法。



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