Patent ID: 11902533
Assignee: ZHEJIANG UNIVIEW TECHNOLOGIES CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The method according to claim 5, wherein the difference between the distortion degree of the region of interest and the reference distortion degree is determined using following formula:, Diffa
  =
  
   {
   
    
     
      
       
        
         Diffa
         min
        
        (
        
         a
         ≤
         
          a
          min
         
        
        )
       
                                                                                        
      
     
    
    
     
      
       
        Diffa
        min
       
       +
       
        
         (
         
          
           Diffa
           max
          
          -
          
           Diffa
           min
          
         
         )
        
        *
        
         a
         
          a
          min
         
        
        ⁢
        
         (
         
          
           a
           min
          
          <
          a
          ≤
          
           a
           max
          
         
         )
        
       
      
     
    
    
     
      
       
        
         Diffa
         max
        
        (
        
         a
         >
         
          a
          max
         
        
        )
       
                                                                                      
      
     
    
   
  
 

where Diffa is a difference between the distortion degree in the region of interest and the reference distortion degree, Diffamin is a preset minimum distortion degree of the region of interest, Diffamax is a preset maximum distortion degree of the region of interest, a is a proportion of the region of interest in a picture, amin is a preset lowest proportion of the region of interest in the picture, and amax is a preset highest proportion of the region of interest in the picture.