Patent ID: 11940578
Assignee: UNIVERSITE DE PARIS
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 3:
4. The imaging method according to claim 2, wherein the local phase θ(x,y) is obtained from the monogenic signal using quadrature filters, which are the combination of an even-symmetric band-pass filter and of two consecutive odd-symmetric filters applied to the even component of the signal according to the following equation:, θ
  =
   
  
   ta
   ⁢
    
   
    
     n
     
      -
      1
     
    
    (
    
     
      I
      e
     
     
      
       
        
         (
         
          
           F
           01
          
          ⊗
          
           I
           e
          
         
         )
        
        2
       
       +
       
        
         (
         
          
           F
           02
          
          ⊗
          
           I
           e
          
         
         )
        
        2
       
      
     
    
    )
   
  
 

wherein Fe is the even-symmetric band-pass filter, giving as result Ie=Fe⊗I being the even component of an image I, and wherein Fo1 and Fo2 are the odd-symmetric filters.