Patent ID: 11871036
Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The apparatus for compressing JPEG images according to claim 6, wherein the DC coefficient estimation unit generates the following Equation 6 by substituting the above Equation 5 into the above Equation 4, and predicts the estimated quantized DC coefficient ({circumflex over (D)}0,0) through the Equation 6:, D
       ^
      
      
       0
       ,
       0
      
     
     =
     
      
       [
       
        
         
          
           8
           ×
           
            
             ∑
             
              n
              =
              0
             
             7
            
            
             N
             
              7
              ,
              n
             
            
           
          
          -
          
           p
           
            0
            ,
            n
           
           AC
          
          +
          
           W
           
            n
            ,
            7
           
          
          -
          
           p
           
            n
            ,
            0
           
           AC
          
         
         
          
           QF
           
            0
            ,
            0
           
          
          ×
          16
         
        
        -
        128
       
       ]
      
      .
     
    
   
   
    
     [
     
      Equation
      ⁢
         
      6
     
     ]