Image Steganalysis Using Image Quality Metrics (Structural Contents Metric)

A new method presented in this work to detect the existence of hidden data as a secret message in images. This method must be applyied only on images which have the same visible properties (similar in perspective) where the human eyes cannot detect the difference betvveen them. This method is based on Image Quality Metrics (Structural Contents Metric), which means the comparison between the original images and stego images, and determines the size of the hidden data. We applied the method to four different images, we detect by this method the hidden data and find exactly the same size of the hidden data.