16.Sep.2009 A very interesting conference

In late august I went to a conference about Steganalysis and Forgery Detection in JPEG Images by the Dr. Qingzhong Liu from the New Mexico Institute of Mining and Technology. If you would’ve asked me why I was there that day, I would have answered: “Well, first of all, the professor made me come here, and second… Hmm! forgery detection? That sounds very interesting to me!”

When everyone was presented, Dr. Liu began with the presentation showing us 2 images, and a question. He wanted to know if we were able to see the information that was supposedly within the pair. As you imagine, no one said anything, maybe it was because the 2 images were fairly small and not very detailed, or they were just shy. Then we went to the next slide, were he showed us the same two images but this time with the information that was deliberately hidden in them. At first, I was incredulous, but as the presentation went I changed my mind. He went step by step giving very detailed information about the process of hiding, and uncovering information from images. And people… I can assure you that the process of hiding information is a LOT easier than the one to uncover it.