Note: Grayscal threshold in the simple method is 155 as 0 represents white and 255 represents black in this page. 
  Grayscale threshold would be (255-155)= 100 if "grayscale" representation is reversed.  
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	Table 0.  Comparison of recognition methods
	
	
	
	    | Image | Ctrl Case: 458 | AD Case: 311 |  
	    | Simple method(threshod:155, size cutoff:10) | 73.7% ( 9.4% ) | 74.7% ( 7.4% ) |  
	    | Potts Model with 1 condition | 85.9% ( 5.2% ) | 77.4% ( 4.3% ) |  
	    | Potts Model with 4x4 conditions with Kappa=10 | 97.8% ( 3.0% ) | 93.4% ( 2.1% ) |  
	    | Potts Model with 4x4 conditions with kappa=0 | 95.0% ( 4.9% ) | 93.1% ( 2.1% ) |  |