Kernel Fisher discriminant for steganalysis of JPEG hiding methods
نویسندگان
چکیده
The use of kernel Fisher discriminants is used to detect the presence of JPEG based hiding methods. The feature vector for the kernel discriminant is constructed from the quantized DCT coefficient indices. Using methods developed in kernel theory a classifier is trained in a high dimensional feature space which is capable of discriminating original from stegoimages. The algorithm is tested on the F5 hiding method.
منابع مشابه
Locally most-powerful detector for secret key estimation in spread spectrum image steganography
Kernel Fisher discriminant for steganalysis of JPEG hiding methods p. 13 On estimation of secret message length in LSB steganography in spatial domain p. 23 Steganalysis using color wavelet statistics and one-class support vector machines p. 35 Steganalysis using modified pixel comparison and complexity measure p. 46 Performance evaluation of blind steganalysis classifiers p. 58 Searching for t...
متن کاملNew Features for Specific JPEG Steganalysis
We present in this paper a new approach for specific JPEG steganalysis and propose studying statistics of the compressed DCT coefficients. Traditionally, steganographic algorithms try to preserve statistics of the DCT and of the spatial domain, but they cannot preserve both and also control the alteration of the compressed data. We have noticed a deviation of the entropy of the compressed data ...
متن کاملMicrosoft Word - CONTENTS-NOVEMBER06
We present in this paper a new approach for specific JPEG steganalysis and propose studying statistics of the compressed DCT coefficients. Traditionally, steganographic algorithms try to preserve statistics of the DCT and of the spatial domain, but they cannot preserve both and also control the alteration of the compressed data. We have noticed a deviation of the entropy of the compressed data ...
متن کاملA Survey on Image Steganography and Steganalysis
Steganography and steganalysis are important topics in information hiding. Steganography refers to the technology of hiding data into digital media without drawing any suspicion, while steganalysis is the art of detecting the presence of steganography. This paper provides a survey on steganography and steganalysis for digital images, mainly covering the fundamental concepts, the progress of ste...
متن کاملHide and Seek in JPEG Images
Recently, the JPEG images are the most common format for storing images. JPEG images are very abundant on the Internet bulletin boards and public Internet sites. So it attracted the attention of researchers as the main steganographic format. There are many new and powerful steganography and steganalysis techniques in JPEG images reported in the literature, in the last few years. In this paper, ...
متن کامل