How to evaluate the quality of an image?

what are the criteria, which can I used to evaluate the quality of the output image. I already used the following  1- numbers of edges 2- summation of intensity around the edges 3- entropy 4- PSNR what else??

Answer 1

[Image Analyst]

You can try this File Exchange submission:

http://www.mathworks.com/matlabcentral/fileexchange/41464-image-quality-index-analysis-gui (I have not used it).

A survey paper on image quality:

http://perso.lcpc.fr/hautiere.nicolas/pdf/2010/hautiere-jei10.pdf

Wikipedia page:

https://en.wikipedia.org/wiki/Image_quality