How do I compare two resultant images from different binarization algorithms? I have a binarized image to which i add noise and then try to filter out the noise using various thresholding algorithms such as otsu and niblack.How can i compare the resultant image with the original image so as to find the percentage error that exists between the two??

the original image is as such:


  


and the resultant image is:


  


I need a way to find the percentage error that is present.
Well i think you need to compare the effectiveness of various methods of noise removal that you would be using to get back the original image :

I would suggest to take the following parameters for measure


Mean Square Error (MSE)
Peak Signal to Noise Ratio (PSNR in dB)
Structural Content (SC)


and many others 



You can find the MATLAB codes out here