[Retracted] A Robust Image Encrypted Watermarking Technique for Neurodegenerative Disorder Diagnosis and Its Applications

Algorithm 2

Extraction of the watermark.

1 Start

2  Perform Layer Separation

3  Convert Watermarked Image to GBT Transform

4  Apply SVD on each layer of W’(m,n).

5  Decompose to get S value of W’(m,n).

6  Extract watermark using equation (18).

7  Extract S value of w(m,n).

8  Implement Inverse SVD for the combination of S values.

9  Implement the process of Inverse GBT Transform of watermarked data.

10  Use the image decryption formula to separate watermark and watermarked images.

11 End