To watermark a picture. 2 simple steps..

1) Click "Generate Watermark Signature" to create the watermark that
will be embedded into the image.

2) Click "Embed Watermark Signature" to select the image you wish to
embed the signature into and the program will embed the image. (use the file browser to find the watermarked image in c:\MEP\watermarked and view it by clicking the "View Selected Image" button)
After you have manipulated the watermarked image and you want to extract the watermark to test its correlation to the original

1) Click "Extract Watermark Signature" to extract the (possibly tampered) watermark signature and get the original picture back. The correlation displays how well the extracted picture matches the original. A value of 1 is a perfect match.