Image noise generation

main executing reference usage: usageNoise.m
-----------------------------------------------------------------------------
The objective is to generate different types of noise with different severity based on provided parameters. Though such code references readily exist, the build aims to
1. have a fuller and more intuitive description on the noise types, ie. 'Additive Gaussian Noise' instead of 'agn', for the ease of beginner's usage.
2. returns an update to recommend a parameter for further deterioration

A simple subplot image plot to encapsulate sub-plotting for the ease and neatness of coding is used.

Caveat: A neat, maintainable and extensible interface is yet to be re-designated.

Limitations:
Option [9] 'jpg compression blocking effect' is not fully serviceable.
The author appreciates suggestions and errata. Please do not hesitate to send suggestions and feedback for improvement for the framework construction to the email provided.

Email: promethevx@yahoo.com.

Thank you.

Regards,
Michael Chan JT