Patent ID: 11940578
Assignee: ECOLE SUPÉRIEURE DE PHYSIQUE ET DE CHIMIE INDUSTRIELLES DE LA VILLE DE PARIS
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 2:
3. The imaging method according to claim 2, wherein the motion vector fields Mi are estimated according to the following equation:, M
   i
  
  =
  
   
    1
    2
   
   [
   
    
     
      
       (
       
        
         I
         R
        
        -
        
         I
         
          T
          i
         
        
       
       )
      
      ⁢
      
       ∇
       
        I
        R
       
      
     
     
      
       
        
        
         ∇
         
          I
          R
         
        
        
       
       2
      
      +
      
       
        (
        
         
          I
          R
         
         -
         
          I
          
           T
           i
          
         
        
        )
       
       2
      
     
    
    +
    
     
      
       (
       
        
         θ
         R
        
        -
        
         θ
         
          T
          i
         
        
       
       )
      
      ⁢
      
       ∇
       
        θ
        R
       
      
     
     
      
       
        
        
         ∇
         
          θ
          R
         
        
        
       
       2
      
      +
      
       
        (
        
         
          θ
          R
         
         -
         
          θ
          
           T
           i
          
         
        
        )
       
       2
      
     
    
   
   ]
  
 

wherein ITi and IR are defined as the image template (at frame i) and reference, respectively; ∇ is the gradient operator and θTi and θR are the local phases of the image template and reference, respectively.