**3.1 Experimental result and analysis**

The experimental results are represented in the following, respectively for watermarked image and extracted watermark image as shown in Fig. 9 (i), and Fig. 9 (ii), while taking the different values of gain factor *K*. And various observations for experiment are depicted in Table I.

K=10

 Fig. 9. (i) Watermarked image, (ii) Extracted watermark image

Exhaustive testing against signal processing operation, Geometric distortion , collusion still has to be performed.


Table 1.
