Digital watermarking of color images utilizing mobile platforms

This paper presents an strategy for watermarking on color images using a mobile phone. In the proposed scheme a digital watermark is inserted into a color image and can be retrieved after a digital-analog (D/A) and analog-digital (A/D) conversion process. Moreover, the proposed system is able to detect the watermarks after desycronization attacks such as rotation, scaling and translation. For the detection, the Neyman-Pearson criterion is utilized for the selection of a threshold, which consists in minimizing the overall error probability when the watermark is not actually present. Experimentation results show the effectiveness of the proposed approach.