Getting recognition rate 3.25 only. How to improve recognition rate?

After applying test and training sets with Euclidean distance, I am getting a recognition rate of 3.25 in my program. How do I improve the recognition rate?

[Image Analyst]

No idea. Try explaining better your situation after you read this link.

[Balaji M. Sontakke]

 Sir am having two mat files 40_5_2 and 40_10 that contains dorsal  
 hand vein images data, I have written a program for calculating PCA  
 (eiganvalue and eiganvector), firstly calculated mean, covariance, 
 Projected the Input Images on Image Space, Normalisation, Code to  
 find the nearest (in norm) vector to the input eigenvein 
 components. Lastly, I try to recognise recognition = (originalTest'  
 == test); I got only ARR = 3.25 recognition rate. why this less 
 recognition rate, where I am wrong. I have attached my program herewith please run 'PCA_ORL_11.m' file