Patent ID: 11889109
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. The method of claim 4, wherein s1, s2, s3, s4 and s5 are determined as:, s
     1
    
    =
    
     
      ∑
      
       i
       ,
       j
      
     
     
      abs
      ⁡
      (
      
       
        G
        
         x
         ⁢
         1
        
       
       +
       
        G
        
         x
         ⁢
         0
        
       
      
      )
     
    
   
   ;
  
  ⁢
  

  
   
    
     s
     2
    
    =
    
     
      ∑
      
       i
       ,
       j
      
     
     
      abs
      ⁡
      (
      
       
        G
        
         y
         ⁢
         1
        
       
       +
       
        G
        
         y
         ⁢
         0
        
       
      
      )
     
    
   
   ,
   

   
    
     s
     3
    
    =
    
     
      
       ∑
       
        i
        ,
        j
       
      
      
       
        sign
        (
        
         
          G
          
           x
           ⁢
           1
          
         
         +
         
          G
          
           x
           ⁢
           0
          
         
        
        )
       
       *
       
        
         (
         
          
           I
           
            (
            1
            )
           
          
          -
          
           I
           
            (
            0
            )
           
          
         
         )
        
        .
        

        
         s
         4
        
       
      
     
     =
     
      
       ∑
       
        i
        ,
        j
       
      
      
       
        sign
        (
        
         
          G
          
           y
           ⁢
           1
          
         
         +
         
          G
          
           y
           ⁢
           0
          
         
        
        )
       
       *
       
        (
        
         
          I
          
           (
           1
           )
          
         
         -
         
          I
          
           (
           0
           )
          
         
        
        )
       
      
     
    
   
   ,
   

   
    
     
      s
      5
     
     =
     
      
       ∑
       
        i
        ,
        j
       
      
      
       
        sign
        (
        
         
          G
          
           y
           ⁢
           1
          
         
         +
         
          G
          
           y
           ⁢
           0
          
         
        
        )
       
       *
       
        (
        
         
          G
          
           x
           ⁢
           1
          
         
         +
         
          G
          
           x
           ⁢
           0
          
         
        
        )
       
      
     
    
    ;, and wherein:
I(0) is obtained from predicted sample values that correspond to the first reference frame, and I(1) is obtained from predicted sample values that correspond to the second reference frame;
Gx0 and Gx1 indicate a set of horizontal predicted sample gradients that correspond to the first reference frame and the second reference frame, respectively;
Gy0 and Gy1 indicate a set of vertical predicted sample gradients that correspond to the first reference frame and the second reference frame, respectively; and
i and j are integer numbers, wherein a value of i varies from −1 to 4, and a value of j varies from −1 to 4.