Journal of Korea Society of Industrial Information Systems (한국산업정보학회논문지)

Korea Society of Industrial Information Systems (한국산업정보학회)
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Locating and Searching Hidden Messages in Stego-Images

스테고 이미지에서 은닉메시지 감지기법

  • 지선수 (강릉원주대학교 컴퓨터정보공학부)
  • Published : 2009.09.30
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Abstract

Steganography conceals the fact that hidden message is being sent on the internet. Steganalysis can be detected the abrupt changes in the statistics of a stego-data. After message embedding, I have analyzed for the statistical significance of the fact the occurrence of differences among the four-neighboring pixels. In this case, when a embedding messages within a images is small, use EC value and chi-square test to determine whether a distribution in an images matches a distribution that shows distortion from stego-data.

스테가노그래피는 인터넷에서 은닉메시지가 보내어지는 사실 자체를 숨기는 것이다. 일반적인 스테간 분석은 스테고 신호의 통계량에서 갑작스런 변화인 이상치를 감지하는 것이다. 혼합된 스테고 이미지에 비해 은닉자료가 매우 작은 경우 은닉된 자료의 감지와 위치를 찾아내는 일반적이고 효과적인 감지기법 즉, 이웃한 4개의 픽셀값을 이용한 삽입용량값과 카이스퀘어 검사기법 등을 함께 고려하는 개선된 방법을 제시한다.

Keywords

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