Patent ID: 11900584
Assignee: SHANDONG UNIVERSITY OF TECHNOLOGY
Field: Computer technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 1:
2. The method for judging freshness of cultured fish product based on eye image recognition according to claim 1, wherein a method for obtaining the fish eye turbidity in the eye area is:, Z
  =
  
   
    1
    n
   
   ⁢
   
    
     ∑
     
      i
      =
      1
     
     n
    
    
     
      ∑
      
       j
       =
       1
      
      2
     
     
      
       exp
       ⁡
       (
       
        
         -
         Δ
        
        ⁢
        
         H
         i
        
       
       )
      
      ×
      
       
        (
        
         
          H
          
           i
           ⁢
           j
          
         
         -
         
          
           H
           ¯
          
          j
         
        
        )
       
       2
      
     
    
   
  
 

wherein Z is the fish eye turbidity in the eye area; n represents a number of the gray scale change sequences in the eye area; Hij represents a j-th mean value in an i-th direction in the eye area; Hj represents an average value of the j-th mean value corresponding in the each direction in the eye area, and exp ( ) is an exponential function with a natural constant as a base number, wherein the overall gray scale difference between the first data category and the second data category is recorded as ΔHi, and wherein exp (−ΔH1) represents a reference weight of the internal gray scale difference between eyeball area and iris area in the i-th direction.