Abstract
An attempt is made for improvement of secret image invisibility in circulation images with dyadic wavelet based data hiding with run-length coded secret images of which location of codes are determined by random number. Through experiments, it is confirmed that secret images are almost invisible in circulation images. Also robustness of the proposed data hiding method against data compression of circulation images is discussed. Data hiding performance in terms of invisibility of secret images which are embedded in circulation images is evaluated with the Root Mean Square difference between the original secret image and extracted one from the circulation images. Meanwhile the conventional Multi-Resolution Analysis (MRA) based data hiding is attempted with a variety of parameters, level of MRA and the frequency component location of which secret image is replaced to it and is compared to the proposed method. It is found that the proposed data hiding method is superior to the conventional method. Also the conventional data hiding method is not robust against circulation image processing.
Highlights
Wavelet analysis applications are getting more popular in time series analysis, image analysis, information security area, etc.[1],[2]
The results show that Root Mean Square (RMS) difference for JPEG data compression is 6.38 while that for JPEG 2000 is totally equal to zero because JPEG 2000 is information loss less coding while JPEG is information lossy coding
It is found that Multi-Resolution Analysis (MRA) based conventional data hiding is not robust against image processing, intensity inversion, up-sidedown of geometric conversion, and magnification
Summary
Wavelet analysis applications are getting more popular in time series analysis, image analysis, information security area, etc.[1],[2]. One of the problems on data hiding methods is visibility of the embedded information on the available circulation images [3]-[7]. The other problem is robustness against image processing which is applied to the circulation images including data compressions. One of the problems is visibility of secret image in the circulation images followed by robustness against circulation image manipulations including image deformation, geometric conversion, data compression, etc. In order to overcome the aforementioned problems, a method for data hiding based on lifting dyadic wavelet transformation with runlength coding of data compression which is applied to secret image together with pixel order exchange is proposed. The aforementioned problems of the conventional MRA based data hiding method are discussed followed by the proposed method. Robustness against JPEG and JPEG 2000 of data compression is discussed in the paper
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