fixing matlab code for Image watermark extracting

I am looking for a freelancer to fix my current MATLAB code for image watermark extracting. The code is running but not producing correct results.

Ideal skills and experience:
- Proficient in MATLAB and image processing
- Experience with watermark extraction techniques
- Ability to design an algorithm for watermark extraction

I have my own designed algorithm for watermark extraction and would like the freelancer to implement it. Additionally, I would like detailed documentation on the updated code.