Capacity of Multiple Signaling In Digital Image Watermarking

摘要

This paper analyzes the increase in the signaling capacity as a result of increasing the dimension of (number of bits in) the watermark signal. We will show that as the signal dimension n approaches a very large quantity, the capacity gain increase becomes negligible. As a resutl, we will introduce a novel approach for embedding digital watermarking using multiple signaling. With this approach, the digital watermark signal can be interpreted (decoded) in two different ways. One way will itnerpret the watermark signal as a unique binary random variable sequence, and the other way will interpret the watermark signal as a sequence of meaning-ful English characters.