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

Claim 15:
16. The bit rate control apparatus according to claim 14, wherein the difference between the reference distortion degree and the distortion degree of the region of interest 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 the 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.