Patent ID: 11915395
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Transport (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 13:
14. The computer of claim 13 wherein the at least one processor is further programmed to calculate the variance metric according to:, V
   [
   I
   ]
  
  =
  
   
    
     1
     
      M
      ⁢
      N
     
    
    ⁢
    
     
      ∑
      
       m
       =
       1
      
      M
     
     
      
       ∑
       
        n
        =
        1
       
       N
      
      
       
        I
        2
       
       (
       
        m
        ,
        n
       
       )
      
     
    
   
   -
   
    
     [
     
      
       1
       
        M
        ⁢
        N
       
      
      ⁢
      
       
        ∑
        
         m
         =
         1
        
        M
       
       
        
         ∑
         
          n
          =
          1
         
         N
        
        
         I
         ⁡
         (
         
          m
          ,
          n
         
         )
        
       
      
     
     ]
    
    2
   
  
 

where V[I] represents the variance metric;
where m represents a pixel value in an x-direction with a maximum value M; and
where n represents a pixel value in a y-direction with a maximum value N.