Image quality metrics from wiki -> create a markdown summary

Take a look at this wikipedia .
https://en.wikipedia.org/wiki/Image_quality

It mentions different variations which can be done to an image.

All these terms can be used to corrspond with a parameter in blender. 
Varying these will create a list of images that can be tested for .

Create a markdown file with this name and write a short paragraph on what you have understood. 